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1

76 FR 63917 - Ocean Renewable Power Company, LLC; Notice of Application Accepted for Filing, Soliciting Motions...  

Federal Register 2010, 2011, 2012, 2013

...12711-005] Ocean Renewable Power Company, LLC; Notice of...Applicant: Ocean Renewable Power Company, LLC. e. Name of Project: Cobscook Bay Tidal Energy Project. f. Location...Filed Pursuant to: Federal Power Act, 16 U.S.C....

2011-10-14

2

77 FR 1674 - Ocean Renewable Power Company Maine, LLC; Notice of Availability of Environmental Assessment for...  

Federal Register 2010, 2011, 2012, 2013

...12711-005] Ocean Renewable Power Company Maine, LLC; Notice...the Proposed Cobscook Bay Tidal Energy Project In accordance...reviewed Ocean Renewable Power Company, LLC's application...the proposed Cobscook Bay Tidal Energy Project (FERC...

2012-01-11

3

76 FR 42122 - Ocean Renewable Power Company, LLC; Notice Concluding Pre-Filing Process and Approving Process...  

Federal Register 2010, 2011, 2012, 2013

...12711-003] Ocean Renewable Power Company, LLC; Notice Concluding...Submitted By: Ocean Renewable Power Company, LLC. e. Name of Project: Cobscook Bay Tidal Energy Project. f. Location...Sauer, Ocean Renewable Power Company, LLC, 120...

2011-07-18

4

76 FR 59671 - Ocean Renewable Power Company, LLC; Notice of Application Tendered for Filing With the Commission...  

Federal Register 2010, 2011, 2012, 2013

...12711-005] Ocean Renewable Power Company, LLC; Notice of...Applicant: Ocean Renewable Power Company, LLC. e. Name of Project: Cobscook Bay Tidal Energy Project. f. Location...Filed Pursuant to: Federal Power Act 16 U.S.C....

2011-09-27

5

77 FR 5791 - Ocean Renewable Power Company Maine, LLC; Notice of Staff Participation in Meeting  

Federal Register 2010, 2011, 2012, 2013

...Project No. 12711-005] Ocean Renewable Power Company Maine, LLC; Notice of Staff Participation...with representatives from Ocean Renewable Power Company Maine, LLC at the Federal Energy...January 4, 2012, for the Cobscook Bay Tidal Energy Project No. 12711. A...

2012-02-06

6

76 FR 18750 - Ocean Renewable Power Company, LLC; Notice of Change in Docket Number  

Federal Register 2010, 2011, 2012, 2013

...12711-003] Ocean Renewable Power Company, LLC; Notice of Change...24, 2009, Ocean Renewable Power Company, LLC (ORPC) filed...for the proposed Eastport Tidal Energy Project, a proposal...held by ORPC, the Cobscook Bay Tidal Energy Project preliminary...

2011-04-05

7

Career Opportunity in Ocean Energy POSITION TITLE: Director of Renewable Ocean Energy Research Program  

E-print Network

Career Opportunity in Ocean Energy POSITION TITLE: Director of Renewable Ocean Energy Research for a multi-institutional and multi-disciplinary renewable ocean energy research program. The position and pursue research opportunities in renewable ocean energy that will advance the economy and jobs in North

8

Power marketing and renewable energy  

SciTech Connect

Power marketing refers to wholesale and retail transactions of electric power made by companies other than public power entities and the regulated utilities that own the generation and distribution lines. The growth in power marketing has been a major development in the electric power industry during the last few years, and power marketers are expected to realize even more market opportunities as electric industry deregulation proceeds from wholesale competition to retail competition. This Topical Issues Brief examines the nature of the power marketing business and its relationship with renewable power. The information presented is based on interviews conducted with nine power marketing companies, which accounted for almost 54% of total power sales by power marketers in 1995. These interviews provided information on various viewpoints of power marketers, their experience with renewables, and their respective outlooks for including renewables in their resource portfolios. Some basic differences exist between wholesale and retail competition that should be recognized when discussing power marketing and renewable power. At the wholesale level, the majority of power marketers stress the commodity nature of electricity. The primary criteria for developing resource portfolios are the same as those of their wholesale customers: the cost and reliability of power supplies. At the retail level, electricity may be viewed as a product that includes value-added characteristics or services determined by customer preferences.

Fang, J.M.

1997-09-01

9

Power from Ocean Waves.  

ERIC Educational Resources Information Center

Discussed is the utilization of surface ocean waves as a potential source of power. Simple and large-scale wave power devices and conversion systems are described. Alternative utilizations, environmental impacts, and future prospects of this alternative energy source are detailed. (BT)

Newman, J. N.

1979-01-01

10

Oceans and electrical power  

Microsoft Academic Search

The first part of this paper focused on the potential energy that could be extracted from salinity an'd thermal differences in the oceans; possibilities of converting marine biomass into an energy source were likewise examined. Closest to implementation are apparently schemes to harness thermal differences and wave energy. Tidal power is already producing energy in France, U.S.S.R. and China. Of

Roger H. Charlier

1982-01-01

11

STAFF REPORT RENEWABLE POWER IN  

E-print Network

and transmission infrastructure development in California. Keywords: American Recovery and Reinvestment Transmission Initiative, renewable net short, Renewable Portfolio Standard, small hydroelectric, smart grid

12

DYNAMIC MODELLING OF AUTONOMOUS POWER SYSTEMS INCLUDING RENEWABLE POWER SOURCES.  

E-print Network

(thermal, gas, diesel) and renewable (hydro, wind) power units. The objective is to assess the impact system components are developed. Emphasis is given in the representation of different hydro power plantDYNAMIC MODELLING OF AUTONOMOUS POWER SYSTEMS INCLUDING RENEWABLE POWER SOURCES. ABSTRACT The use

Paris-Sud XI, Université de

13

Renewable Energy. The Power to Choose.  

ERIC Educational Resources Information Center

This book, consisting of 13 chapters, charts the progress made in renewable energy in recent years and outlines renewable energy's prospects. Areas addressed include: energy at the crossroads (discussing oil, gas, coal, nuclear power, and the conservation revolution); solar building design; solar collection; sunlight to electricity; wood; energy…

Deudney, Daniel; Flavin, Christopher

14

Renewable and Efficient Electric Power Systems  

E-print Network

­2004 #12;#12;CONTENTS Preface xvii 1 Basic Electric and Magnetic Circuits 1 1.1 Introduction to Electric Circuits 1 1.2 Definitions of Key Electrical Quantities 2 1.2.1 Charge 2 1.2.2 Current 3 1.2.3 KirchhoffRenewable and Efficient Electric Power Systems Gilbert M. Masters Stanford University A JOHN WILEY

Kammen, Daniel M.

15

Optimal Power Allocation for Renewable Energy Source  

E-print Network

Battery powered transmitters face energy constraint, replenishing their energy by a renewable energy source (like solar or wind power) can lead to longer lifetime. We consider here the problem of finding the optimal power allocation under random channel conditions for a wireless transmitter, such that rate of information transfer is maximized. Here a rechargeable battery, which is periodically charged by renewable source, is used to power the transmitter. All of above is formulated as a Markov Decision Process. Structural properties like the monotonicity of the optimal value and policy derived in this paper will be of vital importance in understanding the kind of algorithms and approximations needed in real-life scenarios. The effect of curse of dimensionality which is prevalent in Dynamic programming problems can thus be reduced. We show our results under the most general of assumptions.

Sinha, Abhinav

2011-01-01

16

Design of isolated renewable hybrid power systems  

SciTech Connect

Isolated electrical power generating units can be used as an economically viable alternative to electrify remote villages where grid extension is not feasible. One of the options for building isolated power systems is by hybridizing renewable power sources like wind, solar, micro-hydro, etc. along with appropriate energy storage. A method to optimally size and to evaluate the cost of energy produced by a renewable hybrid system is proposed in this paper. The proposed method, which is based on the design space approach, can be used to determine the conditions for which hybridization of the system is cost effective. The simple and novel methodology, proposed in this paper, is based on the principles of process integration. It finds the minimum battery capacity when the availability and ratings of various renewable resources as well as load demand are known. The battery sizing methodology is used to determine the sizing curve and thereby the feasible design space for the entire system. Chance constrained programming approach is used to account for the stochastic nature of the renewable energy resources and to arrive at the design space. The optimal system configuration in the entire design space is selected based on the lowest cost of energy, subject to a specified reliability criterion. The effects of variation of the specified system reliability and the coefficient of correlation between renewable sources on the design space, as well as the optimum configuration are also studied in this paper. The proposed method is demonstrated by designing an isolated power system for an Indian village utilizing wind-solar photovoltaic-battery system. (author)

Sreeraj, E.S.; Chatterjee, Kishore [Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400 076 (India); Bandyopadhyay, Santanu [Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai 400 076 (India)

2010-07-15

17

Science Nation: Wave of Discovery: Harnessing the Ocean's Power  

NSDL National Science Digital Library

Capturing the power of ocean waves could become an important part of the world's renewable energy portfolio. Interest and support of this technology has not been consistent. There was enthusiasm after the 1970s oil embargo, but it dropped when oil prices stabilized. Researchers at the Wallace Energy Systems and Renewables Facility (WESRF) in Corvallis, Ore., are at work on wave energy systems. While research in wave energy is 15-20 years behind renewables such as wind power, waves are far more reliable as an energy source. While solar power is only available about 50 percent of the time; and winds are not constant, waves are, and experts say wave energy might one day provide up to six percent of the electricity needs of the United States.

18

Ocean Thermal Energy Conversion (OTEC) A New Secure Renewable Energy Source  

E-print Network

Ocean Thermal Energy Conversion (OTEC) A New Secure Renewable Energy Source For Defense Water Temperature Delta 2 A New Clean Renewable 24/7 Energy Source #12;Ocean Thermal Energy Conversion and Commercial Applications 1 Dr. Ted Johnson Director of Alternative Energy Programs Development Lockheed Martin

19

Renewable power needs smart storage solutions  

SciTech Connect

Ancient Greek philosopher Heraclitus claimed that the only thing constant in life is change, a truth we must accept and even celebrate. Another truth we face today is a growing demand for more energy to help us power the kind and pace of change we’ve become accustomed to, while minimizing environmental consequences. Renewable energy--two words that often find themselves woven into environmentally conscious dialogue. And according to Dave Lucero, director of alternative energy storage at EaglePicher Technologies LLC, the Tri-Cities should be thinking about two more: energy storage. Lucero recently addressed the Tri-Cities Research District about tackling the persistent challenge of maximizing renewable energy, which is inherently variable due to changing weather patterns. Capturing that energy and making it available for later use is vital.

Madison, Alison L.

2010-10-24

20

Cycle Analysis on Ocean Geothermal Power Generation using Multi-staged Turbine  

E-print Network

Renewable energy.. Geothermal heat, Ocean energy, etc.. Geothermal heat.. one of the humankind's oldestCycle Analysis on Ocean Geothermal Power Generation using Multi-staged Turbine 2013. 09. 11 Korea.. depletion of usable fossil fuels and problems on the global environment Interest for alternative energy

21

Designing and Managing Datacenters Powered by Renewable Energy  

E-print Network

Designing and Managing Datacenters Powered by Renewable Energy ´I~nigo Goiri, William Katsak, Kien,wkatsak,lekien,tdnguyen,ricardob}@cs.rutgers.edu Abstract On-site renewable energy has the potential to reduce data- centers' carbon footprint and power. These datacenters will either generate their own renewable energy (self-generation) or draw it directly from

22

Wing Wave: Feasible, Alternative, Renewable, Electrical Energy Producing Ocean Floor System  

E-print Network

Wing Wave: Feasible, Alternative, Renewable, Electrical Energy Producing Ocean Floor System Mark Florida Institute of Technology Melbourne, Florida, USA swood@fit.edu Abstract--Wing-Wave is an ocean, alternative energy system to convert the circular motion of ocean waves as they propagate through the sea

Wood, Stephen L.

23

Utilization of renewable energy sources for power generation in Iran  

Microsoft Academic Search

Utilization of non-renewable energy sources not only results in environmental deterioration but also confronts us with the dilemma of a rapid rate of depletion of such resources, while renewable energy sources can serve us indefinitely with minimal environmental impacts as compared with fossil and nuclear fuels.This article deals with the extent of harnessing renewable energy sources for power generation in

Dawud Fadai

2007-01-01

24

Power Systems Engineering Research Center Renewable Electricity Futures  

E-print Network

Power Systems Engineering Research Center Renewable Electricity Futures Trieu Mai Electricity of the extent to which renewable energy supply can meet the electricity demands of the contiguous United States renewable electricity generation levels: from 30% up to 90% (focusing on 80%) of all U.S. electricity

Van Veen, Barry D.

25

The RenewElec Project: Variable Renewable Energy and the Power System  

SciTech Connect

Variable energy resources, such as wind power, now produce about 4% of U.S. electricity. They can play a significantly expanded role if the U.S. adopts a systems approach that considers affordability, security and reliability. Reaching a 20-30% renewable portfolio standard goal is possible, but not without changes in the management and regulation of the power system, including accurately assessing and preparing for the operational effects of renewable generation. The RenewElec project will help the nation make the transition to the use of significant amounts of electric generation from variable and intermittent sources of renewable power.

Apt, Jay

2014-02-14

26

Design, construction and testing of an ocean renewable energy storage scaled prototype  

E-print Network

The concept for a new form of pumped storage hydro is being developed within the Precision Engineering Research Group at MIT: the Ocean Renewable Energy Storage (ORES) project. Large, hollow concrete spheres are created, ...

Meredith, James D. C. (James Douglas Charles)

2012-01-01

27

Green power marketing: increasing customer demand for renewable energy  

Microsoft Academic Search

As electricity restructuring has progressed, the debate over appropriate mechanisms for the promotion of renewable energy has intensified. Green power marketing seeks to develop an emerging, customer-driven market for renewables. Because demand for green power is analogous to the voluntary provision of public goods, however, some believe that green marketing will not, on its own, provide a large market for

Ryan H. Wiser; Ryan

1998-01-01

28

Renewable energy from the sea - organic Rankine Cycle using ocean thermal energy conversion  

Microsoft Academic Search

Rankine cycles using refrigerant- and benzene-series fluids as working fluids in converting low-grade energy from renewable energy resources such as solar energy and ocean thermal energy were investigated in this study. The main purpose is to verify the feasibility of utilizing ocean energy (i.e., ocean thermal energy conversion, OTEC) which can also be combined with solar energy in an organic

S. K. Wang; T. C. Hung

2010-01-01

29

Renewable Energy Living Lab: Power Your School  

NSDL National Science Digital Library

Students use real-world data to calculate the potential for solar and wind energy generation at their school location. After examining maps and analyzing data from the online Renewable Energy Living Lab, they write recommendations as to the optimal form of renewable energy the school should pursue.

Civil And Environmental Engineering Department

30

Feasibility of Electric Cars Powered by Renewable Energy  

Microsoft Academic Search

As concerns grow regarding the ever increasing use of fossil fuels, interest in vehicles powered by alternative energy sources continues to develop. This study investigates the feasibility of charging electric cars in Ontario, Canada with electricity generated from renewable sources. Two main implementation methods are considered and analyzed, including charging electric cars directly from a grid with an enhanced renewable

Andrew William Brunskill

31

77 FR 60039 - Non-Power Reactor License Renewal  

Federal Register 2010, 2011, 2012, 2013

...3150-AI96 Non-Power Reactor License Renewal AGENCY: Nuclear Regulatory Commission...and Rulemaking, Office of Nuclear Reactor Regulation, U.S. Nuclear...and Rulemaking, Office of Nuclear Reactor Regulation. [FR...

2012-10-02

32

77 FR 38742 - Non-Power Reactor License Renewal  

Federal Register 2010, 2011, 2012, 2013

...3150-AI96 Non-Power Reactor License Renewal AGENCY: Nuclear Regulatory Commission...and Rulemaking, Office of Nuclear Reactor Regulation, Mail Stop...and Rulemaking, Office of Nuclear Reactor Regulation. [FR...

2012-06-29

33

Fuel Cell Power PlantsFuel Cell Power Plants Renewable and Waste Fuels  

E-print Network

generation of combined heat andcombined heat and power ­Clean Power with natural gas f lfuel ­RenewableFuel Cell Power PlantsFuel Cell Power Plants Renewable and Waste Fuels DOE-DOD Workshop Washington installations in North America, Europe, and Asia · Industrial, commercial, utility productsproducts · 300 KW

34

A Renewably Powered Hydrogen Generation and Fueling Station Community Project  

NASA Technical Reports Server (NTRS)

The proposed project goal is to encourage the use of renewable energy and clean fuel technologies for transportation and other applications while generating economic development. This can be done by creating an incubator for collaborators, and creating a manufacturing hub for the energy economy of the future by training both white- and blue-collar workers for the new energy economy. Hydrogen electrolyzer fueling stations could be mass-produced, shipped and installed in collaboration with renewable energy power stations, or installed connected to the grid with renewable power added later.

Lyons, Valerie J.; Sekura, Linda S.; Prokopius, Paul; Theirl, Susan

2009-01-01

35

California's Renewable Portfolio Standard Northwest Power and Conservation Council  

E-print Network

California's Renewable Portfolio Standard Northwest Power and Conservation Council California Power Markets SymposiumCalifornia Power Markets Symposium September 5, 2013 William A. Monsen MRW & Associates, LLC Oakland, California wam@mrwassoc comwam@mrwassoc.com #12;O i f P t tiOverview of Presentation

36

Economic decision making of renewable power producers under uncertainty  

NASA Astrophysics Data System (ADS)

The recent booming development of renewable power generation and government subsidies are constantly under scrutiny and various opinions exist regarding whether subsidies should be continued or not. Motivated by the controversies and debates, this dissertation attempted to address the investment decision making problem under uncertainties in the renewable power industry from the perspective of an individual power producer. Given that independent power producers still dominate the renewable power production and that majority of their output are sold through long-term power purchase agreements, this study focused on two types of uncertainties that could represent most of their kinds: the operations & maintenance (O&M) cost and governmental subsidy's renewal/expiration. Three types of investment activities that covers the major part of any renewable power plant's economic life are thoroughly investigated in a chronological order: an initial entry, exit when the plant reaches its economic life, and repowering. A real-options approach was adopted and improved to model the value of a power plant considering its future activities, while both cost and policy changes modeled as some stochastic processes. Significant policy implications and managerial insights were obtained as a result of extensive analytical modeling and statistical study of empirical evidence.

Lou, Chenlu

37

Power inversion design for ocean wave energy harvesting  

NASA Astrophysics Data System (ADS)

The needs for energy sources are increasing day by day because of several factors, such as oil depletion, and global climate change due to the higher level of CO2, so the exploration of various renewable energy sources is very promising area of study. The available ocean waves can be utilized as free source of energy as the water covers 70% of the earth surface. This thesis presents the ocean wave energy as a source of renewable energy. By addressing the problem of designing efficient power electronics system to deliver 5 KW from the induction generator to the grid with less possible losses and harmonics as possible and to control current fed to the grid to successfully harvest ocean wave energy. We design an AC-DC full bridge rectifier converter, and a DC-DC boost converter to harvest wave energy from AC to regulated DC. In order to increase the design efficiency, we need to increase the power factor from (0.5-0.6) to 1. This is accomplished by designing the boost converter with power factor correction in continues mode with RC circuit as an input to the boost converter power factor correction. This design results in a phase shift between the input current and voltage of the full bridge rectifier to generate a small reactive power. The reactive power is injected to the induction generator to maintain its functionality by generating a magnetic field in its stator. Next, we design a single-phase pulse width modulator full bridge voltage source DC-AC grid-tied mode inverter to harvest regulated DC wave energy to AC. The designed inverter is modulated by inner current loop, to control current injected to the grid with minimal filter component to maintain power quality at the grid. The simulation results show that our design successfully control the current level fed to the grid. It is noteworthy that the simulated efficiency is higher than the calculated one since we used an ideal switch in the simulated circuit.

Talebani, Anwar N.

38

Fuel Cell Electric Vehicle Powered by Renewable Hydrogen  

SciTech Connect

The National Renewable Energy Laboratory (NREL) recently received a Borrego fuel cell electric vehicle (FCEV) on loan from Kia for display at a variety of summer events. The Borrego is fueled using renewable hydrogen that is produced and dispensed at NREL's National Wind Technology Center near Boulder, Colorado. The hydrogen dispensed at the station is produced via renewable electrolysis as part of the wind-to-hydrogen project, which uses wind turbines and photovoltaic arrays to power electrolyzer stacks that split water into hydrogen and oxygen. The FCEV features state-of-the-art technology with zero harmful emissions.

None

2011-01-01

39

Fuel Cell Electric Vehicle Powered by Renewable Hydrogen  

ScienceCinema

The National Renewable Energy Laboratory (NREL) recently received a Borrego fuel cell electric vehicle (FCEV) on loan from Kia for display at a variety of summer events. The Borrego is fueled using renewable hydrogen that is produced and dispensed at NREL's National Wind Technology Center near Boulder, Colorado. The hydrogen dispensed at the station is produced via renewable electrolysis as part of the wind-to-hydrogen project, which uses wind turbines and photovoltaic arrays to power electrolyzer stacks that split water into hydrogen and oxygen. The FCEV features state-of-the-art technology with zero harmful emissions.

None

2013-05-29

40

Colorado's Prospects for Interstate Commerce in Renewable Power  

SciTech Connect

Colorado has more renewable energy potential than it is ever likely to need for its own in-state electricity consumption. Such abundance may suggest an opportunity for the state to sell renewable power elsewhere, but Colorado faces considerable competition from other western states that may have better resources and easier access to key markets on the West Coast. This report examines factors that will be important to the development of interstate commerce for electricity generated from renewable resources. It examines market fundamentals in a regional context, and then looks at the implications for Colorado.

Hurlbut, D. J.

2009-12-01

41

Overview of Renewables for Power Rangan Banerjee  

E-print Network

Collectors Technology Options for Solar power PVThermal Low Temp. 400°C Medium Temp. Up Silicon Thin Film Solar Power #12;Comparison of Solar Thermal Power Generation Technologies Technology Efficiency Indian Experience Status Capital Cost (Rs/kW) Electricity (Rs/kWh) Solar Flat Plate Collectors 2

Banerjee, Rangan

42

Kolmogorov spectrum of renewable wind and solar power fluctuations  

NASA Astrophysics Data System (ADS)

With increasing the contribution of renewable energies in power production, the task of reducing dynamic instability in power grids must also be addressed from the generation side, because the power delivered from such sources is spatiotemporally stochastic in nature. Here we characterize the stochastic properties of the wind and solar energy sources by studying their spectrum and multifractal exponents. The computed power spectrum from high frequency time series of solar irradiance and wind power reveals a power-law behaviour with an exponent ˜ 5/3 (Kolmogorov exponent) for the frequency domain 0.001 Hz < f < 0.05 Hz, which means that the power grid is being fed by turbulent-like sources. Our results bring important evidence on the stochastic and turbulent-like behaviour of renewable power production from wind and solar energies, which can cause instability in power grids. Our statistical analysis also provides important information that must be used as a guideline for an optimal design of power grids that operate under intermittent renewable sources of power.

Tabar, M. Reza Rahimi; Anvari, M.; Lohmann, G.; Heinemann, D.; Wächter, M.; Milan, P.; Lorenz, E.; Peinke, Joachim

2014-10-01

43

Bimode uninterruptible power supply compatibility in renewable hybrid energy systems  

Microsoft Academic Search

An alternative to inverters with add-on charging circuits or standby uninterruptible power supply (UPS) hardware, the bimode UPS, is discussed. The bimode UPS uses common circuitry and power components for DC-to-AC inversion and battery charging. It also provides an automatic and nearly instantaneous AC power transfer function when the engine-generator is started or stopped. The components of the renewable hybrid

Ward Bower; G. O'Sullivan

1990-01-01

44

Renewables for the Power Rangan Banerjee  

E-print Network

& SYSTEMS USEFUL ENERGY END USE ACTIVITIES (ENERGY SERVICES) COAL, OIL, SOLAR, GAS POWER PLANT, REFINERIES 95700 MU (21 %) COMMERCIAL 31400 MU (7 %) TRACTION 9500 MU (2 %) WATER WORKS , PUMPING & LIGHTING 14600/Trigeneration Decentralised Distributed Generation Isolated Demand Side Management (Solar Water Heater, Passive Solar) #12

Banerjee, Rangan

45

Ocean Renewable Energy Research at U. New Hampshire  

NASA Astrophysics Data System (ADS)

The University of New Hampshire (UNH) is strategically positioned to develop and evaluate wave and tidal energy extraction technologies, with much of the required test site infrastructure in place already. Laboratory facilities (wave/tow tanks, flumes, water tunnels) are used to test concept validation models (scale 1:25--100) and design models (scale 1:10--30). The UNH Open Ocean Aquaculture (OOA) site located 1.6 km south of the Isles of Shoals (10 km off shore) and the General Sullivan Bridge testing facility in the Great Bay Estuary are used to test process models (scale 1:3--15) and prototype/demonstration models (scale 1:1-- 4) of wave energy and tidal energy extraction devices, respectively. Both test sites are easily accessible and in close proximity of UNH, with off-the-shelf availability. The Great Bay Estuary system is one of the most energetic tidally driven estuaries on the East Coast of the U.S. The current at the General Sullivan bridge test facility reliably exceeds four knots over part of the tidal cycle. The OOA site is a ten year old, well established offshore test facility, and is continually serviced by a dedicated research vessel and operations/diving crew. In addition to an overview of the physical resources, results of recent field testing of half- and full-scale hydrokinetic turbines, and an analysis of recent acoustic Doppler surveys of the tidal estuary will be presented.

Wosnik, M.; Baldwin, K.; White, C.; Carter, M.; Gress, D.; Swift, R.; Tsukrov, I.; Kraft, G.; Celikkol, B.

2008-11-01

46

Optimization of RO desalination systems powered by renewable energies  

Microsoft Academic Search

In the initial stage of the project, a meticulous analysis was made on the behaviour of membranes and on the response that offers a reverse osmosis pilot plant, working in a discontinuous regime, with constant stops and successive fluctuations of pressure and volume, as the data of simulation of power coming from renewable energies (availability of wind and\\/or sun), with

AntonioGomez Gotor; Ignacio De la Nuez Pestana; Celso Argudo Espinoza

2003-01-01

47

Renewable Energy Penetration on the power Grid Fall / 2010  

E-print Network

characteristics, battery charging, charge regulators and battery management. 8. (1- period): Problem Session. 9: TBA Text: Renewable Energy Systems M. Godoy Simoes and Felix A. Farret Attendance: Test attendance Energy: i-V, P-V curves, electrical load matching, sun tracking, PV system component and peak power point

Bolding, M. Chad

48

Overview of village scale, renewable energy powered desalination  

SciTech Connect

An overview of desalination technologies is presented, focusing on those technologies appropriate for use in remote villages, and how they can be powered using renewable energy. Technologies are compared on the basis of capital cost, lifecycle cost, operations and maintenance complexity, and energy requirements. Conclusions on the appropriateness of different technologies are drawn, and recommendations for future research are given.

Thomas, K.E.

1997-04-01

49

Energy Storage Applications in Power Systems with Renewable Energy Generation  

NASA Astrophysics Data System (ADS)

In this dissertation, we propose new operational and planning methodologies for power systems with renewable energy sources. A probabilistic optimal power flow (POPF) is developed to model wind power variations and evaluate the power system operation with intermittent renewable energy generation. The methodology is used to calculate the operating and ramping reserves that are required to compensate for power system uncertainties. Distributed wind generation is introduced as an operational scheme to take advantage of the spatial diversity of renewable energy resources and reduce wind power fluctuations using low or uncorrelated wind farms. The POPF is demonstrated using the IEEE 24-bus system where the proposed operational scheme reduces the operating and ramping reserve requirements and operation and congestion cost of the system as compared to operational practices available in the literature. A stochastic operational-planning framework is also proposed to adequately size, optimally place and schedule storage units within power systems with high wind penetrations. The method is used for different applications of energy storage systems for renewable energy integration. These applications include market-based opportunities such as renewable energy time-shift, renewable capacity firming, and transmission and distribution upgrade deferral in the form of revenue or reduced cost and storage-related societal benefits such as integration of more renewables, reduced emissions and improved utilization of grid assets. A power-pool model which incorporates the one-sided auction market into POPF is developed. The model considers storage units as market participants submitting hourly price bids in the form of marginal costs. This provides an accurate market-clearing process as compared to the 'price-taker' analysis available in the literature where the effects of large-scale storage units on the market-clearing prices are neglected. Different case studies are provided to demonstrate our operational-planning framework and economic justification for different storage applications. A new reliability model is proposed for security and adequacy assessment of power networks containing renewable resources and energy storage systems. The proposed model is used in combination with the operational-planning framework to enhance the reliability and operability of wind integration. The proposed framework optimally utilizes the storage capacity for reliability applications of wind integration. This is essential for justification of storage deployment within regulated utilities where the absence of market opportunities limits the economic advantage of storage technologies over gas-fired generators. A control strategy is also proposed to achieve the maximum reliability using energy storage systems. A cost-benefit analysis compares storage technologies and conventional alternatives to reliably and efficiently integrate different wind penetrations and determines the most economical design. Our simulation results demonstrate the necessity of optimal storage placement for different wind applications. This dissertation also proposes a new stochastic framework to optimally charge and discharge electric vehicles (EVs) to mitigate the effects of wind power uncertainties. Vehicle-to-grid (V2G) service for hedging against wind power imbalances is introduced as a novel application for EVs. This application enhances the predictability of wind power and reduces the power imbalances between the scheduled output and actual power. An Auto Regressive Moving Average (ARMA) wind speed model is developed to forecast the wind power output. Driving patterns of EVs are stochastically modeled and the EVs are clustered in the fleets of similar daily driving patterns. Monte Carlo Simulation (MCS) simulates the system behavior by generating samples of system states using the wind ARMA model and EVs driving patterns. A Genetic Algorithm (GA) is used in combination with MCS to optimally coordinate the EV fleets for their V2G services and minimize the penalty cost associated wit

Ghofrani, Mahmoud

50

Bimode uninterruptible power supply compatibility in renewable hybrid energy systems  

SciTech Connect

Inverters installed in renewable hybrid energy systems are typically used in a stand-alone mode to supply ac power to loads from battery storage when the engine-generator is not being used. Similarities in topology and in the performance requirements of the standby uninterruptible power supply (UPS) system and the hybrid system suggest the UPS could be used in hybrid energy systems. Another alternative to inverters with add-on charging circuits or standby UPS hardware is the Bimode UPS. The bimode UPS uses common circuitry and power components for dc to ac inversion and battery charging. It also provides an automatic and nearly instantaneous ac power transfer function when the engine-generator is started or stopped. The measured operating and transfer characteristics of a bimode UPS in a utility system and in a hybrid system are presented. The applicability of the bimode UPS to hybrid systems and its compatibility in a PV/engine-generator hybrid system are given.

Bower, W. (Sandia National Labs., Albuquerque, NM (USA)); O'Sullivan, G. (Abacus Controls, Inc., Somerville, NJ (USA))

1990-08-01

51

Assessment of Japan's Optimal Power Generation Mix Considering Massive Deployment of Variable Renewable Power Generation  

NASA Astrophysics Data System (ADS)

This paper analyzes Japan's optimal power generation mix considering massive deployment of solar photovoltaic (PV) system and wind power generation. The extensive introduction of PV system and wind power system are expected to play an important role in addressing energy security and climate change concern in Japan. Considering this expected large-scale deployment of PV system in electric power system, it is necessary to investigate the optimal power generation mix which is technologically capable of controlling and accommodating the intermittent output-power fluctuation inherently derived from PV and wind energy system. On these backgrounds, we develop optimal power generation mix model, explicitly analyzing the impact of output fluctuation in variable renewable in detailed resolution of time interval like 10 minutes at consecutive 365 days, with the role of stationary battery technology incorporated. Simulation results reveal that considerable deployment of those variable renewables do not necessarily require the scale of battery capacity similar as that of variable renewable capacity, due to quick load following treatment by thermal power plants, pumped-storage hydro power and battery technology over renewable output fluctuation.

Komiyama, Ryoichi; Fujii, Yasumasa

52

Load-shedding probabilities with hybrid renewable power generation and energy storage  

E-print Network

Load-shedding probabilities with hybrid renewable power generation and energy storage Huan Xu, Ufuk Topcu, Steven H. Low, Christopher R. Clarke, and K. Mani Chandy Abstract-- The integration of renewable. We consider, as a case study, the integration of renewable resources into the electric power

Xu , Huan

53

Unlocking Electric Power in the Oceans.  

ERIC Educational Resources Information Center

Cruising or stationary ocean thermal plants could convert the vast heat energy of the ocean into electricity for islands and underdeveloped countries. This approach to energy conservation is described with suggestions for design and outputs of plants. A model project operating in Hawaii is noted. (DH)

Hurwood, David L.

1985-01-01

54

Global ocean wind power sensitivity to surface layer stability  

NASA Astrophysics Data System (ADS)

Global ocean wind power has recently been assessed (W. T. Liu et al., 2008) using scatterometry-based 10 m winds. We characterize, for the first time, wind power at 80 m (typical wind turbine hub height) above the global ocean surface, and account for the effects of surface layer stability. Accounting for realistic turbine height and atmospheric stability increases mean global ocean wind power by +58% and -4%, respectively. Our best estimate of mean global ocean wind power is 731 W m-2, about 50% greater than the 487 W m-2 based on previous methods. 80 m wind power is 1.2-1.5 times 10 m power equatorward of 30° latitude, between 1.4 and 1.7 times 10 m power in wintertime storm track regions and >6 times 10 m power in stable regimes east of continents. These results are relatively insensitive to methodology as wind power calculated using a fitted Weibull probability density function is within 10% of power calculated from discrete wind speed measurements over most of the global oceans.

Capps, Scott B.; Zender, Charles S.

2009-05-01

55

An integrated transmission planning framework for including renewable energy technologies in a deregulated power system  

Microsoft Academic Search

Renewable energy integration with the power systems will change the power systems in many ways. Renewable resources in remote areas will trigger extensive transmission upgrades to deliver green energy to the load centers. The intermittent and non-dispatchable characteristics of the renewable resources will impact both long-term system adequacy and real-time system security. Uncertainty of the development of renewable resources is

Yi Zhang; Songzhe Zhu; A. A. Chowdhury; Pei Zhang

2010-01-01

56

Renewable Energy and Combined Heat and Power Resources in the UK  

E-print Network

...............................................................................................................17 2.7 Tidal powerRenewable Energy and Combined Heat and Power Resources in the UK Jim Watson, Julia Hertin, Tom;Renewable Energy and Combined Heat and Power Resources in the UK Jim Watson, Julia Hertin and Tom Randall

Watson, Andrew

57

A Method to Study the Effect of Renewable Resource Variability on Power System Dynamics  

E-print Network

1 A Method to Study the Effect of Renewable Resource Variability on Power System Dynamics Yu- tricity generation on power system dynamics, with a focus on time-scales involving electromechanical of variability in renewable-based generation on power system dynamic performance, particularly, on time- scales

Liberzon, Daniel

58

The integration of renewable energy sources into electric power transmission systems  

Microsoft Academic Search

Renewable energy technologies such as photovoltaics, solar thermal power plants, and wind turbines are nonconventional, environmentally attractive sources of energy that can be considered for electric power generation. Many of the areas with abundant renewable energy resources (very sunny or windy areas) are far removed from major load centers. Although electrical power can be transmitted over long distances of many

P. R. Barnes; W. P. Dykas; B. J. Kirby; S. L. Purucker; J. S. Lawler

1995-01-01

59

An approach to hybrid power systems integration considering different renewable energy technologies  

Microsoft Academic Search

Hybrid power systems need to be evaluated based on the requirements of high penetration renewable energy technology applications. Additionally, modeling and analysis storage systems integration are also necessary to increase the effectiveness of hybrid power configurations. In the present talk, a software based simulation to understand the hybrid power systems response considering various renewable energy technologies and energy storage options

Nicolas Lopez; Jose F. Espiritu

2011-01-01

60

Solar Power To Help Convert Carbon Dioxide Into Fuel : Renewable Energy News  

E-print Network

Solar Power To Help Convert Carbon Dioxide Into Fuel : Renewable Energy News TUESDAY 25 MAY, 2010 directly from carbon dioxide. With sunlight being the most abundant source of renewable energy available on one page #12;Return to main renewable energy news section subscribe to our free newsletter! P 1300 727

Lovley, Derek

61

Integrating renewable sources of energy into an existing combined heat and power system  

Microsoft Academic Search

In recent years, renewable energy sources have played an increasingly important role in potential energy production. The integration of renewables into energy production plants has therefore become a major challenge for many organizations. This study concerns the modernization of a small power plant in a large hospital. The design criteria include the possibility of utilizing renewable energy sources and providing

Martin Pavlas; Petr Stehlík; Jaroslav Oral; Ji?í Šikula

2006-01-01

62

Workload Shaping to Mitigate Variability in Renewable Power Use by Data Centers  

E-print Network

costs. These include integration of renewable energy [2], [3], improved cooling [4], [5] and improved) and proposes a novel approach for scheduling workload that incorporates use of renewable energy sources. We]. Integration of renewable power generation ­ through solar or wind ­ presents another opportunity

Gupta, Rajesh

63

Power System Study for Renewable Energy Interconnection in Malaysia  

NASA Astrophysics Data System (ADS)

The renewable energy (RE) sector has grown exponentially in Malaysia with the introduction of the Feed-In-Tariff (FIT) by the Ministry of Energy, Green Technology and Water. Photovoltaic, biogas, biomass and mini hydro are among the renewable energy sources which offer a lucrative tariff to incite developers in taking the green technology route. In order to receive the FIT, a developer is required by the utility company to perform a power system analysis which will determine the technical feasibility of an RE interconnection to the utility company's existing grid system. There are a number of aspects which the analysis looks at, the most important being the load flow and fault levels in the network after the introduction of an RE source. The analysis is done by modelling the utility company's existing network and simulating the network with the interconnection of an RE source. The results are then compared to the values before an interconnection is made as well as ensuring the voltage rise or the increase in fault levels do not violate any pre-existing regulations set by the utility company. This paper will delve into the mechanics of performing a load flow analysis and examining the results obtained.

Askar, O. F.; Ramachandaramurthy, V. K.

2013-06-01

64

Buying Renewable Electric Power in Montgomery County, Maryland  

NASA Astrophysics Data System (ADS)

From mid-August 2007 until mid-August 2008, my home electricity supply was 100% wind-generated. My experience in switching to wind-generated electric power may be of interest to fellow AGU members for three reasons. First, Montgomery County, Md., where I live, is one of the few jurisdictions in the United States that has both an electric power tax and a renewable energy credit. The county is therefore a case study in price-based public policy for greenhouse gas emissions control. Second, I was surprised by the comparatively small price difference (or ``price premium'') between wind-generated and conventionally generated power in the county, and I believe that Eos readers will be similarly surprised. Third, because so many U.S. federal agencies concerned with Earth science are based in the Washington, D. C., area, a high concentration of AGU members live in Montgomery County and may be personally interested in evaluating the price of reducing carbon dioxide emissions from the generation of their own residential electricity.

Cember, Richard P.

2008-08-01

65

How to develop renewable power in China? A cost-effective perspective.  

PubMed

To address the problems of climate change and energy security, Chinese government strived to develop renewable power as an important alternative of conventional electricity. In this paper, the learning curve model is employed to describe the decreasing unit investment cost due to accumulated installed capacity; the technology diffusion model is used to analyze the potential of renewable power. Combined with the investment cost, the technology potential, and scenario analysis of China social development in the future, we develop the Renewable Power Optimization Model (RPOM) to analyze the optimal development paths of three sources of renewable power from 2009 to 2020 in a cost-effective way. Results show that (1) the optimal accumulated installed capacities of wind power, solar power, and biomass power will reach 169000, 20000, and 30000?MW in 2020; (2) the developments of renewable power show the intermittent feature; (3) the unit investment costs of wind power, solar power, and biomass power will be 4500, 11500, and 5700?Yuan/KW in 2020; (4) the discounting effect dominates the learning curve effect for solar and biomass powers; (5) the rise of on-grid ratio of renewable power will first promote the development of wind power and then solar power and biomass power. PMID:24578672

Cong, Rong-Gang; Shen, Shaochuan

2014-01-01

66

The renewable energy applications for uninterruptible power supply based on compressed air energy storage system  

Microsoft Academic Search

The objective of this paper is to propose a modeling of the renewable energy applications for uninterruptible power supply (UPS) based on compressed air energy storage system (CAES). The system is composite technology, which composes of energy storage system and electric power supply system. The energy will transfer from the renewable energy resource to the CAES system drives the air

Varin Vongmanee

2009-01-01

67

An overview of renewable energy in Spain. The small hydro-power case  

Microsoft Academic Search

Development of hydroelectric energy, a renewable source of power, is guaranteed and maintained by the Plan of Promotion of the Renewable Energies 1999–2010 (PLAFER). This is arrived at by means of a definition and establishment of a series of power objectives in which an increase in the hydroelectric sector is anticipated. This study corresponds to a revision of the present

Germán Martínez Montes; María del Mar Serrano López; Maria del Carmen Rubio Gámez; Antonio Menéndez Ondina

2005-01-01

68

Large-scale Ocean-based or Geothermal Power Plants by Thermoelectric Effects  

E-print Network

Heat resources of small temperature difference are easily accessible, free and unlimited on earth. Thermoelectric effects provide the technology for converting these heat resources directly into electricity. We present designs of electricity generators based on thermoelectric effects and using heat resources of small temperature difference, e.g., ocean water at different depths and geothermal sources, and conclude that large-scale power plants based on thermoelectric effects are feasible and economically competitive. The key observation is that the power factor of thermoelectric materials, unlike the figure of merit, can be improved by orders of magnitude upon laminating good conductors and good thermoelectric materials. The predicted large-scale power plants based on thermoelectric effects, if validated, will have a global economic and social impact for its scalability, and the renewability, free and unlimited supply of heat resources of small temperature difference on earth.

Liu, Liping

2012-01-01

69

Exergy of the ocean thermal resource and the second law efficiency of idealized ocean thermal energy conversion power cycles  

Microsoft Academic Search

A formula is developed to compute the maximum amount of work which can be extracted from a given combined mass of warm and cold ocean water (a quantity called the exergy of the ocean thermal resource). The second law efficiencies of various proposed ocean thermal energy conversion power cycles are compared to determine which best utilizes the exergy of the

D. H. Johnson

1982-01-01

70

Matching grid-connected power with the economics of Ocean Power Generation  

Microsoft Academic Search

Summary form only given. Clearly, the critical path factor in converting conceptual ocean power technologies to the commercial market is deciding how to design\\/build\\/operate privately funded Ocean Power Generation systems to the national grids in North America, Australia, Japan and Europe. This paper outlines a path forward for phased-in permitting\\/development and construction of more than 100 MWe of generation capacity

S. J. Mueller

2003-01-01

71

Voltage stability constrained risk-based TTC evaluation of a power system with large integration of renewable energy  

Microsoft Academic Search

A future power grid should allow all types of generation including renewable energy, e.g. wind power and photovoltaic (PV). Over recent years, it has been witnessed a fast-growing renewable energy development throughout the world. Japan also pushes toward the renewable energy development setting out a target of 6610 MW wind power and 53 GW PV by 2030. This large penetration

Nattawut Paensuwan; Akihiko Yokoyama; S. C. Verma; Nakachi Yoshiki

2010-01-01

72

Mechanical Extraction of Power From Ocean Currents and Tides  

NASA Technical Reports Server (NTRS)

A proposed scheme for generating electric power from rivers and from ocean currents, tides, and waves is intended to offer economic and environmental advantages over prior such schemes, some of which are at various stages of implementation, others of which have not yet advanced beyond the concept stage. This scheme would be less environmentally objectionable than are prior schemes that involve the use of dams to block rivers and tidal flows. This scheme would also not entail the high maintenance costs of other proposed schemes that call for submerged electric generators and cables, which would be subject to degradation by marine growth and corrosion. A basic power-generation system according to the scheme now proposed would not include any submerged electrical equipment. The submerged portion of the system would include an all-mechanical turbine/pump unit that would superficially resemble a large land-based wind turbine (see figure). The turbine axis would turn slowly as it captured energy from the local river flow, ocean current, tidal flow, or flow from an ocean-wave device. The turbine axis would drive a pump through a gearbox to generate an enclosed flow of water, hydraulic fluid, or other suitable fluid at a relatively high pressure [typically approx.500 psi (approx.3.4 MPa)]. The pressurized fluid could be piped to an onshore or offshore facility, above the ocean surface, where it would be used to drive a turbine that, in turn, would drive an electric generator. The fluid could be recirculated between the submerged unit and the power-generation facility in a closed flow system; alternatively, if the fluid were seawater, it could be taken in from the ocean at the submerged turbine/pump unit and discharged back into the ocean from the power-generation facility. Another alternative would be to use the pressurized flow to charge an elevated reservoir or other pumped-storage facility, from whence fluid could later be released to drive a turbine/generator unit at a time of high power demand. Multiple submerged turbine/pump units could be positioned across a channel to extract more power than could be extracted by a single unit. In that case, the pressurized flows in their output pipes would be combined, via check valves, into a wider pipe that would deliver the combined flow to a power-generating or pumped-storage facility.

Jones, Jack; Chao, Yi

2010-01-01

73

A Critical Evaluation of Nuclear Power and Renewable Electricity in Asia  

Microsoft Academic Search

This article judges modern nuclear power and renewable electricity technologies according to six criteria: cost; fuel availability; land degradation; water use; climate change; and safety\\/security. It concludes that when these criteria are taken into consideration, renewable electricity technologies present policy makers with a superior alternative for minimising the risk of fuel interruptions and shortages, helping improve the fragile transmission network

Benjamin K. Sovacool

2010-01-01

74

Kenninger Renewable Energy and Power Systems Seminar April 21, 2014 10:30 am Room ME 2054  

E-print Network

Kenninger Renewable Energy and Power Systems Seminar April 21, 2014 10:30 am Room ME 2054 Dr Engineering Department University of California ­ Los Angeles "A Technology Portfolio for a Renewable Energy storage and renewable energy conversion. This seminar will present a portfolio of renewable energy

Ginzel, Matthew

75

The integration of renewable energy sources into electric power transmission systems  

SciTech Connect

Renewable energy technologies such as photovoltaics, solar thermal power plants, and wind turbines are nonconventional, environmentally attractive sources of energy that can be considered for electric power generation. Many of the areas with abundant renewable energy resources (very sunny or windy areas) are far removed from major load centers. Although electrical power can be transmitted over long distances of many hundreds of miles through high-voltage transmission lines, power transmission systems often operate near their limits with little excess capacity for new generation sources. This study assesses the available capacity of transmission systems in designated abundant renewable energy resource regions and identifies the requirements for high-capacity plant integration in selected cases. In general, about 50 MW of power from renewable sources can be integrated into existing transmission systems to supply local loads without transmission upgrades beyond the construction of a substation to connect to the grid. Except in the Southwest, significant investment to strengthen transmission systems will be required to support the development of high-capacity renewable sources of 1000 MW or greater in areas remote from major load centers. Cost estimates for new transmission facilities to integrate and dispatch some of these high-capacity renewable sources ranged from several million dollars to approximately one billion dollars, with the latter figure an increase in total investment of 35%, assuming that the renewable source is the only user of the transmission facility.

Barnes, P.R.; Dykas, W.P.; Kirby, B.J.; Purucker, S.L. [Oak Ridge National Lab., TN (United States); Lawler, J.S. [Univ. of Tennessee, Knoxville, TN (United States)

1995-07-01

76

78 FR 37325 - License Renewal of Nuclear Power Plants; Generic Environmental Impact Statement and Standard...  

Federal Register 2010, 2011, 2012, 2013

...NUCLEAR REGULATORY COMMISSION 10 CFR Part 51...NRC-2008-0608] RIN 3150-AI42 License Renewal of Nuclear Power Plants; Generic Environmental Impact...Plans for Environmental Reviews AGENCY: Nuclear Regulatory Commission. ACTION:...

2013-06-20

77

Potential Role of Concentrating Solar Power in Enabling High Renewables Scenarios in the United States  

SciTech Connect

This work describes the analysis of concentrating solar power (CSP) in two studies -- The SunShot Vision Study and the Renewable Electricity Futures Study -- and the potential role of CSP in a future energy mix.

Denholm, P.; Hand, M.; Mai, T.; Margolis, R.; Brinkman, G.; Drury, E.; Mowers, M.; Turchi, C.

2012-10-01

78

78 FR 37324 - Preparation of Environmental Reports for Nuclear Power Plant License Renewal Applications  

Federal Register 2010, 2011, 2012, 2013

...Statement for License Renewal of Nuclear Plants'' (ADAMS Accession Nos...Plans for Environmental Reviews for Nuclear Power Plants, Supplement 1: Operating...received 3 public comments from the Nuclear Energy Institute, New York State...

2013-06-20

79

Potential of wind-powered renewable energy membrane systems for Ghana   

E-print Network

Areas of the world that lack fresh water often have an ample supply of wind or solar energy, making renewable energy an attractive option as a power source for desalination systems. Particularly, wind energy is attractive because of its relatively...

Park, G.L.; Schäfer, Andrea; Richard, B.S.

2009-01-01

80

64 Home Power #30 August / September 1992 ny renewable energy system that  

E-print Network

supplies, uninterruptible power systems, and residential electrical equipment give some indication64 Home Power #30 · August / September 1992 ny renewable energy system that employs an inverter Laboratories -- The Standards Maker The design of UL-listed power-handing equipment (NEMA enclosures, outlet

Johnson, Eric E.

81

Power-Electronic Systems for the Grid Integration of Renewable Energy Sources: A Survey  

Microsoft Academic Search

The use of distributed energy resources is increasingly being pursued as a supplement and an alternative to large conventional central power stations. The specification of a power-electronic interface is subject to requirements related not only to the renewable energy source itself but also to its effects on the power-system operation, especially where the intermittent energy source constitutes a significant part

Juan Manuel Carrasco; Leopoldo Garcia Franquelo; Jan T. Bialasiewicz; Eduardo Galván; Ramón C. Portillo Guisado; Ma. A. M. Prats; José Ignacio León; Narciso Moreno-Alfonso

2006-01-01

82

Power Transfer Potential to the Southeast in Response to a Renewable Portfolio Standard: Interim Report 1  

SciTech Connect

The power transfer potential for bringing renewable energy into the Southeast in response to a renewable portfolio standard (RPS) will depend not only on available transmission capacity but also on electricity supply and demand factors. This interim report examines how the commonly used EIA NEMS and EPRI NESSIE energy equilibrium models are considering such power transfers. Using regional estimates of capacity expansion and demand, a base case for 2008, 2020 and 2030 are compared relative to generation mix, renewable deployments, planned power transfers, and meeting RPS goals. The needed amounts of regional renewable energy to comply with possible RPS levels are compared to inter-regional transmission capacities to establish a baseline available for import into the Southeast and other regions. Gaps in the renewable generation available to meet RPS requirements are calculated. The initial finding is that the physical capability for transferring renewable energy into the SE is only about 10% of what would be required to meet a 20% RPS. Issues that need to be addressed in future tasks with respect to modeling are the current limitations for expanding renewable capacity and generation in one region to meet the demand in another and the details on transmission corridors required to deliver the power.

Hadley, Stanton W [ORNL; Key, Thomas S [Electric Power Research Institute (EPRI)

2009-03-01

83

10 CFR Appendix B to Subpart A of... - Environmental Effect of Renewing the Operating License of a Nuclear Power Plant  

Code of Federal Regulations, 2010 CFR

10 Energy 2 2010-01-01...false Environmental Effect of Renewing the Operating License of a Nuclear Power Plant B...Subpart A of Part 51 Energy NUCLEAR REGULATORY COMMISSION...Environmental Effect of Renewing the...

2010-01-01

84

Biomass power and state renewable energy policies under electric industry restructuring  

SciTech Connect

Several states are pursuing policies to foster renewable energy as part of efforts to restructure state electric power markets. The primary policies that states are pursuing for renewables are system benefits charges (SBCs) and renewable portfolio standards (RPSs). However, the eligibility of biomass under state RPS and SBC policies is in question in some states. Eligibility restrictions may make it difficult for biomass power companies to access these policies. Moreover, legislative language governing the eligibility of biomass power is sometimes vague and difficult to interpret. This paper provides an overview of state RPS and SBC policies and focuses on the eligibility of biomass power. For this paper, the authors define biomass power as using wood and agricultural residues and landfill methane, but not waste-to-energy, to produce energy.

Porter, K.; Wiser, R.

2000-08-01

85

Controller and Power Hardware-In-Loop Methods for Accelerating Renewable Energy Integration  

Microsoft Academic Search

This paper describes the basic concepts behind controller hardware-in-the-loop (CHIL) and power hardware-in- the-loop (PHIL) experimental testing from a renewable energy system integration perspective. An entire power apparatus or sub-system such as a power electronics converter for a fuel cell system or a variable speed wind power generator system can be tested in a controlled laboratory environment such as the

M. Steurer; F. Bogdan; W. Ren; M. Sloderbeck; S. Woodruff

2007-01-01

86

Advanced superconducting power conditioning system with SMES for effective use of renewable energy  

NASA Astrophysics Data System (ADS)

Since it is an urgent issue to reduce the global Carbon-dioxide in the world, renewable energy should be supplied as a large amount of the electric power. However, if a large amount of fluctuating renewable energy becomes more than adjustable amount of a utility grid capacity, instabilities such as frequency deviation might occur. We propose a system that is composed of SMES and FC-H2-Electrolyzer and also installed adjacent to Liquid Hydrogen station to cool down the SMES. Since the SMES has potentials of quick response and large I/O power, and Fuel Cell has potentials of slow response and steady power supplied from a large amount of hydrogen, we combine both storage devices and apply them to suppress the fluctuating power. We convert the fluctuating power to the constant power by using a developed prediction technology of Kalman filter to predict a trend of the fluctuating power. While the trend power should be supplied by FC or absorbed by the electrolyzer to produce hydrogen, the power difference between the renewable power and the trend power should be stored by the SMES. We simulate the power balance and analyze the required SMES capacity, design the concept of the SMES, and propose an operation algorithm for the SMES to estimate the electric efficiency of the system. It is found that the electric efficiency of the ASPCS can become greater than that of a pumped hydro-machine.

Hamajima, T.; Tsuda, M.; Miyagi, D.; Amata, H.; Iwasaki, T.; Son, K.; Atomura, N.; Shintomi, T.; Makida, Y.; Takao, T.; Munakata, K.; Kajiwara, M.

87

Power Transfer Potential to the Southeast in Response to a Renewable Portfolio Standard: Interim Report 2  

SciTech Connect

Electricity consumption in the Southeastern US, not including Florida, is approximately 24% of the total US. The availability of renewable resources for electricity production is relatively small compared to the high consumption. Therefore meeting a national renewable portfolio standard (RPS) is particularly challenging in this region. Neighboring regions, particularly to the west, have significant wind resources and given sufficient long distant transmission these resources could serve energy markets in the SE. This report looks at renewable resource supply relative to demands and the potential for power transfer into the SE. It shows that development of wind resources will depend not only on available transmission capacity but also on electricity supply and demand factors.

Hadley, Stanton W [ORNL; Key, Thomas S [Electric Power Research Institute (EPRI); Deb, Rajat [LCG Consulting

2009-05-01

88

Adaptations of renewable energy policies to unstable macroeconomic situations—Case study: Wind power in Brazil  

Microsoft Academic Search

Despite the massive cost reduction in the last decade, wind power generation is generally still more expensive than conventional energy sources which benefit from the exclusion of externality costs in the price structure. Support policies for renewable energies guarantee the economic viability of this type of electrical power generation in many European countries. In Latin America, Brazil has become the

Johannes M. Kissel; Stefan C. W. Krauter

2006-01-01

89

Multilevel converters control for renewable energy integration to the power grid  

Microsoft Academic Search

The paper deals with the multilevel converters control strategy for renewable energy resources integration in distribution grids. The proposed control scheme ensures the injection of the generated power in the distribution grid with fast dynamic response, while providing an additional active power filtering capability providing the required harmonic and reactive currents to the considered non-linear loads. The proposed control scheme

Edris Pouresmaeil; Oriol Gomis-Bellmunt; Daniel Montesinos-Miracle; Joan Bergas-Jané

2011-01-01

90

Multi-port DC-DC Power Converter for Renewable Energy Application  

E-print Network

year [2] . . . . . . . . . . . . . . . . 2 3 Price range of renewable electricity by technology [2] . . . . . . . . . 3 4 Characteristics of wind turbines [4] . . . . . . . . . . . . . . . . . . . 5 5 Characteristics of photovoltaic [4... subsections will describe several examples and show the importance of energy storage in renewable energy applications. 1. For Wind Power Fig. 4 shows the characteristics of wind turbines for different wind speeds (v) [4]. The X-axis is the rotor speed...

Chou, Hung-Ming

2010-01-16

91

Design and manufacture study of Ocean Renewable Energy Storage (ORES) prototype  

E-print Network

Utility scale energy storage is needed to balance rapidly varying outputs from renewable energy systems such as wind and solar. In order to address this need, an innovative utility scale energy storage concept has been ...

Dündar, Gökhan

2012-01-01

92

Variable Renewable Generation can Provide Balancing Control to the Electric Power System (Fact Sheet)  

SciTech Connect

As wind and solar plants become more common in the electric power system, they may be called on to provide grid support services to help maintain system reliability. For example, through the use of inertial response, primary frequency response, and automatic generation control (also called secondary frequency response), wind power can provide assistance in balancing the generation and load on the system. These active power (i.e., real power) control services have the potential to assist the electric power system in times of disturbances and during normal conditions while also potentially providing economic value to consumers and variable renewable generation owners. This one-page, two-sided fact sheet discusses the grid-friendly support and benefits renewables can provide to the electric power system.

Not Available

2013-09-01

93

Forty candles for the Rance River TPP tides provide renewable and sustainable power generation  

Microsoft Academic Search

Prices of oil and other fossil fuels have proven a powerful incentive for the alternative energy hunters. The alternatives include the various forms of ocean energy that, often considered uneconomical for electricity generation, have become attractive and competitive. Many sites throughout the world have been considered, at one time or another, suitable for implantation of a tidal power station, but

Roger H. Charlier

2007-01-01

94

Power electronics and its applications to renewable energy in Japan  

Microsoft Academic Search

The electric utility industry is gradually undergoing restructuring and the main paradigm shift is the introduction of the principles of competition. With the level of future demand for electricity being unclear, power market players are reluctant to commit to long-term capital investment, with the result that construction of new large-scale power plants and also transmission and distribution infrastructure is typically

Junichi Arai; Kenji Iba; Toshihisa Funabashi; Yosuke Nakanishi; Kaoru Koyanagi; Ryuichi Yokoyama

2008-01-01

95

Environmental Standard Review Plan for the review of license renewal applications for nuclear power plants  

SciTech Connect

The Environmental Standard Review Plan for the Review of License Applications for Nuclear Power Plants (ESRP-LR) is to be used by the NRC staff when performing environmental reviews of applications for the renewal of power reactor licenses. The use of the ESRP-LR provides a framework for the staff to determine whether or not environmental issues important to license renewal have been identified and the impacts evaluated and provides acceptance standards to help the reviewers comply with the National Environmental Policy Act.

O'Brien, J.; Kim, T.J.; Reynolds, S.

1991-08-01

96

a 100% Renewable Power System for Europe -- let the Weather and Physics DECIDE!  

NASA Astrophysics Data System (ADS)

The design of sustainable energy systems is no longer only the domain of politics, economics and engineering. Mathematical physics is able to contribute with its generic understanding of everything. A new modelling approach is presented and applied to design a fully renewable European power system. This approach is based on weather data with good spatio-temporal resolution, which is first converted into wind and solar power generation and then used to derive estimates on the optimal mix between the renewable resources and the storage needs.

Greiner, Martin; Heide, Dominik; Rasmussen, Morten; Andresen, Gorm

2012-01-01

97

Renewable energy in the South Pacific—options and constraints  

Microsoft Academic Search

Over the last fifteen years the small island nations in the South Pacific have seen the introduction of various forms of renewable energy technologies. In spite of high expectations from the development of indigenous renewable energy resources using nonconventional approaches (wind power, wave power, ocean thermal energy conversion, biogas digestors, biomass gasifiers), these technologies have largely failed to develop into

M Jafar

2000-01-01

98

Wind Power: A Renewable Energy Source for Mars Transit Vehicle  

NASA Technical Reports Server (NTRS)

The Martian environment presents significant design challenges for the development of power generation systems. Nuclear-based systems may not be available due to political and safety concerns. The output of photovoltaics are limited by a solar intensity of 580 W/sqm as compared to 1353 W/sqm on Earth. The presence of dust particles in the Mars atmosphere will further reduce the photovoltaic output. Also, energy storage for a 12-hour night period must be provided. In this challenging environment, wind power generation capabilities may provide a viable option as a Martian power generation system. This paper provides an analysis of the feasibility of such a system.

Flynn, Michael; Kohout, Lisa; Kliss, Mark (Technical Monitor)

1998-01-01

99

Renewable Energy in India: Status and future Potential  

E-print Network

Thermal Solar Photovoltaic Tidal Wave Ocean Thermal #12;Power Generation Options Power Generation;Energy End uses End-uses Cooking Transport Electricity HeatingCooling Cooling Motive Power Lighting Side Management (Solar Water Heater, Passive Solar) #12;Renewables in Power Power generation 6500 PJ

Banerjee, Rangan

100

LARGE SCALE DEPLOYMENT OF RENEWABLE ENERGY BY COMBINING WIND FARMS WITH SOLAR THERMAL POWER PLANTS  

Technology Transfer Automated Retrieval System (TEKTRAN)

The installation of megawatt-size wind turbines on 65 to 80 meter towers at Class 4 wind sites in Texas has resulted in the cheapest form of renewable energy ($0.04/kWh). However, wind farm output has a diurnal mismatch to the utility electrical loading. Combining solar thermal power plants with w...

101

Parasol and GreenSwitch: Managing Datacenters Powered by Renewable Energy  

E-print Network

costs, reduce peak power costs, or both. How- ever, certain renewable fuels are intermittent, which fossil fuels. A 2008 study estimated world-wide datacenters to emit 116 million metric tons of carbon management can produce significant cost reductions. Our results also isolate the cost impli- cations of peak

102

An implementation of grid interactive inverter with reactive power support capability for renewable energy sources  

Microsoft Academic Search

In this study, a DSP based three phase current c ontrolled grid interactive inverter with reactive power injection capability is proposed for renewable energy sources. The proposed voltage source inverter consists of a line frequency transformer, LCL filter at the output and PI current regulator. The proposed inverter system has been designed, simulated and implemented. Both experimental and simulation studies

Ibrahim Sefa; Necmi Altin; Saban Ozdemir

2011-01-01

103

The development of renewable energy power in India: Which policies have been effective?  

Microsoft Academic Search

The International Energy Agency has identified the development of renewable energy sources as a key element to mitigate climate change. At the same time it has projected India to be the second-largest contributor to the increase in global energy demand to 2035. India hence faces a significant challenge to ensure its energy security by diversifying its power generation mix. In

2012-01-01

104

Human factors, human reliability and risk assessment in license renewal of a nuclear power plant  

Microsoft Academic Search

This paper describes human factors and human reliability assessments carried out as a part of operating license renewal of a nuclear power plant. The structure and contents of human factors assessments, the source material and the role of probabilistic safety assessment are described. Similar evaluations are recommended as an integral part of periodic safety reviews of regulated industrial facilities.The qualitative

Jussi K. Vaurio

2009-01-01

105

The transition from fossil fuelled to a renewable power supply in a deregulated electricity market  

Microsoft Academic Search

In this paper, we investigate the trade-offs between long-term and short-term effects of energy planning within the context of a deregulated power market. The purpose is to find efficient policies that can aid the transition from a fossil fuelled to a renewable based pow- er supply. Our case study is on the Nordpool power market. The model focus on the

Klaus-Ole Vogstad; Audun Botterud; Karl Magnus Maribu; Stine Grenaa

106

Comparison of wind stress algorithms, datasets and oceanic power input  

E-print Network

If the ocean is in a statistically steady state, energy balance is a strong constraint, suggesting that the energy input into the world ocean is dissipated simultaneously at the same rate. Energy conservation is one of the ...

Yuan, Shaoyu

2009-01-01

107

Ocean energy resource systems  

SciTech Connect

The oceans occupy nearly three-quarters of the Earth`s surface and represent a potentially large source of renewable energy. While many industrialized nations have conducted exploratory research and development, the total power currently available from ocean energy resource systems, with the exception of a French tidal power plant, is less that 100 megawatts. A number of ocean energy conversion technologies are approaching an acceptable stage of development for commercial utilization. Factors important to the design and development of such systems-including wave, tide and thermal gradient sources are discussed.

Bregman, R.; Knapp, R.H.; Takahashi, P.K. [Univ. of Hawaii, Honolulu, HI (United States)

1996-08-01

108

Mill Seat Landfill Bioreactor Renewable Green Power (NY)  

SciTech Connect

The project was implemented at the Mill Seat landfill located in the Town of Bergen, Monroe County, New York. The landfill was previously equipped with a landfill gas collection system to collect methane gas produced by the bioreactor landfill and transport it to a central location for end use. A landfill gas to energy facility was also previously constructed at the site, which utilized generator engines, designed to be powered with landfill methane gas, to produce electricity, to be utilized on site and to be sold to the utility grid. The landfill gas generation rate at the site had exceeded the capacity of the existing generators, and the excess landfill gas was therefore being burned at a candlestick flare for destruction. The funded project consisted of the procurement and installation of two (2) additional 800 KW Caterpillar 3516 generator engines, generator sets, switchgear and ancillary equipment.

Barton & Loguidice, P.C.

2010-01-07

109

Power Transfer Potential to the Southeast in Response to a Renewable Portfolio Standard: Final Report  

SciTech Connect

Electricity consumption in the Southeastern US, including Florida, is approximately 32% of the total US. The availability of renewable resources for electricity production is relatively small compared to the high consumption. Therefore meeting a national renewable portfolio standard (RPS) is particularly challenging in this region. Neighboring regions, particularly to the west, have significant wind resources and given sufficient transmission these resources could serve energy markets in the SE. This report looks at renewable resource supply relative to demands and the potential for power transfer into the SE. We found that significant wind energy transfers, at the level of 30-60 GW, are expected to be economic in case of federal RPC or CO2 policy. Development of wind resources will depend not only on the available transmission capacity and required balancing resources, but also on electricity supply and demand factors.

Key, Thomas S [Electric Power Research Institute (EPRI); Hadley, Stanton W [ORNL; Deb, Rajat [LCG Consulting

2010-02-01

110

Integrating Variable Renewable Energy in Electric Power Markets: Best Practices from International Experience  

SciTech Connect

Many countries -- reflecting very different geographies, markets, and power systems -- are successfully managing high levels of variable renewable energy on the electric grid, including that from wind and solar energy. This study documents the diverse approaches to effective integration of variable renewable energy among six countries -- Australia (South Australia), Denmark, Germany, Ireland, Spain, and the United States (Western region-Colorado and Texas)-- and summarizes policy best practices that energy ministers and other stakeholders can pursue to ensure that electricity markets and power systems can effectively coevolve with increasing penetrations of variable renewable energy. Each country has crafted its own combination of policies, market designs, and system operations to achieve the system reliability and flexibility needed to successfully integrate renewables. Notwithstanding this diversity, the approaches taken by the countries studied all coalesce around five strategic areas: lead public engagement, particularly for new transmission; coordinate and integrate planning; develop rules for market evolution that enable system flexibility; expand access to diverse resources and geographic footprint of operations; and improve system operations. The ability to maintain a broad ecosystem perspective, to organize and make available the wealth of experiences, and to ensure a clear path from analysis to enactment should be the primary focus going forward.

Cochran, J.; Bird, L.; Heeter, J.; Arent, D. A.

2012-04-01

111

Power Generation Investment Planning in a Modern Power System With High Share of Renewables  

NASA Astrophysics Data System (ADS)

This article is focused on investment planning in power generation industry, which becomes an important direction of research under the conditions of newly formed environment of electricity market. The authors emphasize the key role of effective instruments and methods for estimation of the costs and economic efficiency of a generating capacity and its adequacy in a modern power system. In the paper, cost-based concepts are analyzed which form a basis for decision-making and long-term planning of investments in the power generation sector for a power system with high share of renewable energy sources. M?sdien?s energoinfrastrukt?ras att?st?bas un t? vad?bas proces? ir j?pie?em un j?pilda vair?ki l?mumi par nepieciešamiem kapit?lieguld?jumiem, kas ir r?p?gi j?pl?no un j?pamato. Viedo t?klu tehnolo?iju ieviešana un energosist?mas drošuma uztur?šana, ?emot v?r? liberaliz?to elektroener?ijas tirgu, rada nepieciešam?bu p?c principi?li jaun?m pieej?m un metod?m kapit?lieguld?jumu nov?rt?šanas uzdevumu risin?šanai. P?t?jums velt?ts invest?ciju pl?nošanai elektroener?ijas ?ener?cijas iek?rtai elektroener?ijas tirgus apst?k?os, ?emot v?r? lielo atjaun?go energoresursu (AER) ?patsvaru. Modernu energosist?mu vad?ba prasa pietiekamu ?ener?cijas jaudas elast?gumu un to pareizo kombin?ciju. Lai to sasniegtu, vispirms ir nepieciešama daž?du ?ener?cijas tehnolo?ijas izmaksu nov?rt?šana, ko var veikt, izmantojot pien?c?go instrumentu. Tas ar? ir p?t?juma m?r?is, kura rezult?t? tika pied?v?ta elektrostaciju ekonomiskas dz?votsp?jas nov?rt?šanas koncepcija, balstoties uz elektroener?ijas ražošanas l?me?izmaks?m (ed costs), lai sal?dzin?tu daž?du elektroener?ijas ražošanas tehnolo?ijas izmaksas. Lai to sasniegtu tika veikti: - invest?ciju pl?nošana ?ener?cij?, metožu p?t?šana; - elektrostaciju darb?bas principu anal?ze elektroener?ijas tirg?; - elektrostaciju ?ener?cijas tehnolo?ijas izmaksu nov?rt?šana; - elektrostaciju ?ener?cijas ?stermi?a un ilgtermi?a izmaksu nov?rt?šana; - elektrostaciju ?ener?cijas invest?ciju un vad?bas izmaksu nov?rt?šana; - daž?du ?ener?cijas tehnolo?iju izmaksu skaitliskie apr??ini un anal?ze. ?paša uzman?ba velt?ta invest?ciju pl?nošanai elektroener?ijas ražošanas nozar? liberaliz?ta tirgus apst?k?os; tika izanaliz?ti efekt?vie instrumenti, izmaksu metodes un ekonomisk?s efektivit?tes nov?rt?šanas noz?me daž?da tipa ?ener?još?m jaud?m un t?s atbilst?ba m?sdienu elektroapg?des sist?mas pras?b?m

Oleinikova, I.; Ruksans, O.; Turcik, M.

2014-04-01

112

Oceans  

NSDL National Science Digital Library

Bridge: Ocean Sciences Education Teacher Resource Center. Bridge, the Ocean Sciences Education Teacher Resource Center, is a growing collection of on-line marine education resources. It provides educators with ...

113

EC417 --Electric Energy, Adapting to Renewable Resources Brief History of Power Systems (the great AC-DC battle)  

E-print Network

EC417 -- Electric Energy, Adapting to Renewable Resources Fall 2014 Topics: · Brief History (generation, transmission, distribution -- electric motors and other loads) · Power Plants with emphasis Power and Power Factor calculations · Transformers · Introduction to Power Electronics and AC/DC and DC

114

The energy of the ocean thermal resource and the second-law efficiency of idealized ocean thermal energy conversion power cycles  

Microsoft Academic Search

A formula is developed to compute the maximum amount of work which can be extracted from a given combined mass of warm and cold ocean water (a quantity called the energy of the ocean thermal resources). Second it compares the second-law efficiencies of various proposed ocean thermal energy conversion power cycles to determine which best utilizes the energy of the

D. H. Johnson

1982-01-01

115

Renewable Energy in China: Xiao Qing Dao Village Power Wind/Diesel Hybrid Pilot Project  

SciTech Connect

In 2000, DOE/NREL and the State Power Corporation of China (SPCC) developed a pilot project to electrify Xiao Qing Dao, a small island located in China's Yellow Sea. The project demonstrates the practicality of renewable energy systems for medium-scale, off-grid applications. It consists of four 10 k-W wind turbines connected to a 30-kW diesel generator, a 40-kW inverter and a battery bank.

Not Available

2006-01-01

116

A strategy for the introduction of desalination powered by renewable energy in Jordan  

Microsoft Academic Search

Within the ADIRA project (www.adira.gr) a strategy has been developed facilitating the up-take of desalination powered by renewable energy in Turkey, Morocco, Jordan and Egypt. This strategy has been documented in a central report called the “Master Plan for the Wide Implementation of Autonomous Desalination Systems in Turkey, Morocco, Jordan and Egypt”. In this paper the work and results for

Hazim Mohameed Qiblaweya; Michael Papapetrou; Fawzi Banat

2009-01-01

117

Why are remote Western Australians installing renewable energy technologies in stand-alone power supply systems?  

Microsoft Academic Search

As people living in remote areas rely on SPS systems for their electricity and water needs, they hold a practical and non-idealistic perspective towards using renewable energy technologies. This research explores pastoral owner-operators’ personal experience and opinion of stand-alone power supply (SPS) systems over 30years in remote pastoral regions Western Australia (WA). This research was undertaken qualitatively in terms of

Mark P. McHenry

2009-01-01

118

Ocean Renewable Energy Storage (ORES) System: Analysis of an Undersea Energy Storage Concept  

E-print Network

Due to its higher capacity factor and proximity to densely populated areas, offshore wind power with integrated energy storage could satisfy > 20% of U.S. electricity demand. Similar results could also be obtained in many ...

Slocum, Alexander H.

119

10 CFR Appendix B to Subpart A of... - Environmental Effect of Renewing the Operating License of a Nuclear Power Plant  

Code of Federal Regulations, 2011 CFR

...license renewal term. Aquatic Ecology (for plants with once-through...3)(ii)(B). Aquatic Ecology (for plants with cooling-tower-based...the license renewal term. Bird collisions with cooling towers...significance at all sites. Bird collision with power lines...

2011-01-01

120

Ocean conditions and Columbia River salmon Testimony provided for the House Subcommittee on Power and Water  

E-print Network

Ocean conditions and Columbia River salmon Testimony provided for the House Subcommittee on Power controlling salmon marine survival in the Pacific Northwest, several ocean-climate events have been linked with fluctuations in Northwest salmon health and abundance. These include: El Niño/La Niña, the Pacific Decadal

Mantua, Nathan

121

An adaptive framework for selecting environmental monitoring protocols to support ocean renewable energy development.  

PubMed

Offshore renewable energy developments (OREDs) are projected to become common in the United States over the next two decades. There are both a need and an opportunity to guide efforts to identify and track impacts to the marine ecosystem resulting from these installations. A monitoring framework and standardized protocols that can be applied to multiple types of ORED would streamline scientific study, management, and permitting at these sites. We propose an adaptive and reactive framework based on indicators of the likely changes to the marine ecosystem due to ORED. We developed decision trees to identify suites of impacts at two scales (demonstration and commercial) depending on energy (wind, tidal, and wave), structure (e.g., turbine), and foundation type (e.g., monopile). Impacts were categorized by ecosystem component (benthic habitat and resources, fish and fisheries, avian species, marine mammals, and sea turtles) and monitoring objectives were developed for each. We present a case study at a commercial-scale wind farm and develop a monitoring plan for this development that addresses both local and national environmental concerns. In addition, framework has provided a starting point for identifying global research needs and objectives for understanding of the potential effects of ORED on the marine environment. PMID:23319884

Shumchenia, Emily J; Smith, Sarah L; McCann, Jennifer; Carnevale, Michelle; Fugate, Grover; Kenney, Robert D; King, John W; Paton, Peter; Schwartz, Malia; Spaulding, Malcolm; Winiarski, Kristopher J

2012-01-01

122

An Adaptive Framework for Selecting Environmental Monitoring Protocols to Support Ocean Renewable Energy Development  

PubMed Central

Offshore renewable energy developments (OREDs) are projected to become common in the United States over the next two decades. There are both a need and an opportunity to guide efforts to identify and track impacts to the marine ecosystem resulting from these installations. A monitoring framework and standardized protocols that can be applied to multiple types of ORED would streamline scientific study, management, and permitting at these sites. We propose an adaptive and reactive framework based on indicators of the likely changes to the marine ecosystem due to ORED. We developed decision trees to identify suites of impacts at two scales (demonstration and commercial) depending on energy (wind, tidal, and wave), structure (e.g., turbine), and foundation type (e.g., monopile). Impacts were categorized by ecosystem component (benthic habitat and resources, fish and fisheries, avian species, marine mammals, and sea turtles) and monitoring objectives were developed for each. We present a case study at a commercial-scale wind farm and develop a monitoring plan for this development that addresses both local and national environmental concerns. In addition, framework has provided a starting point for identifying global research needs and objectives for understanding of the potential effects of ORED on the marine environment. PMID:23319884

Shumchenia, Emily J.; Smith, Sarah L.; McCann, Jennifer; Carnevale, Michelle; Fugate, Grover; Kenney, Robert D.; King, John W.; Paton, Peter; Schwartz, Malia; Spaulding, Malcolm; Winiarski, Kristopher J.

2012-01-01

123

Aquantis Ocean Current Turbine Development Project Report  

SciTech Connect

The Aquantis® Current Plane (“C-Plane”) technology developed by Dehlsen Associates, LLC (DA) and Aquantis, Inc. is an ocean current turbine designed to extract kinetic energy from ocean currents. The technology is capable of achieving competitively priced base-load, continuous, and reliable power generation from a source of renewable energy not before possible in this scale or form.

Fleming, Alex J.

2014-08-23

124

Legal Implications of CO2 Ocean Storage  

E-print Network

Legal Implications of CO2 Ocean Storage Jason Heinrich Working Paper Laboratory for Energy #12;Introduction Ocean sequestration of CO2, a potentially significant technique to be used in combination with renewable power sources, energy efficiency improvements and proposed lifestyle changes

125

Multifunctional Voltage Source Inverter for Renewable Energy Integration and Power Quality Conditioning  

PubMed Central

In order to utilize the energy from the renewable energy sources, power conversion system is necessary, in which the voltage source inverter (VSI) is usually the last stage for injecting power to the grid. It is an economical solution to add the function of power quality conditioning to the grid-connected VSI in the low-voltage distribution system. Two multifunctional VSIs are studied in this paper, that is, inductive-coupling VSI and capacitive-coupling VSI, which are named after the fundamental frequency impedance of their coupling branch. The operation voltages of the two VSIs are compared when they are used for renewable energy integration and power quality conditioning simultaneously. The operation voltage of the capacitive-coupling VSI can be set much lower than that of the inductive-coupling VSI when reactive power is for compensating inductive loads. Since a large portion of the loads in the distribution system are inductive, the capacitive-coupling VSI is further studied. The design and control method of the multifunctional capacitive-coupling VSI are proposed in this paper. Simulation and experimental results are provided to show its validity. PMID:25177725

Dai, NingYi; Lam, Chi-Seng; Zhang, WenChen

2014-01-01

126

Multifunctional voltage source inverter for renewable energy integration and power quality conditioning.  

PubMed

In order to utilize the energy from the renewable energy sources, power conversion system is necessary, in which the voltage source inverter (VSI) is usually the last stage for injecting power to the grid. It is an economical solution to add the function of power quality conditioning to the grid-connected VSI in the low-voltage distribution system. Two multifunctional VSIs are studied in this paper, that is, inductive-coupling VSI and capacitive-coupling VSI, which are named after the fundamental frequency impedance of their coupling branch. The operation voltages of the two VSIs are compared when they are used for renewable energy integration and power quality conditioning simultaneously. The operation voltage of the capacitive-coupling VSI can be set much lower than that of the inductive-coupling VSI when reactive power is for compensating inductive loads. Since a large portion of the loads in the distribution system are inductive, the capacitive-coupling VSI is further studied. The design and control method of the multifunctional capacitive-coupling VSI are proposed in this paper. Simulation and experimental results are provided to show its validity. PMID:25177725

Dai, NingYi; Lam, Chi-Seng; Zhang, WenChen

2014-01-01

127

On the Patterns of Wind-Power Input to the Ocean Circulation  

E-print Network

Pathways of wind-power input into the ocean general circulation are analyzed using Ekman theory. Direct rates of wind work can be calculated through the wind stress acting on the surface geostrophic flow. However, because ...

Roquet, Fabien

128

76 FR 78173 - Options for Developing the Regulatory Basis for Streamlining Non-Power Reactor License Renewal...  

Federal Register 2010, 2011, 2012, 2013

...Renewal and Non-Power Reactor Emergency Preparedness AGENCY: Nuclear Regulatory Commission...Rulemaking, Office of Nuclear Reactor Regulation, U.S. Nuclear...Rulemaking, Office of Nuclear Reactor Regulation. [FR...

2011-12-16

129

10 CFR Appendix B to Subpart A of... - Environmental Effect of Renewing the Operating License of a Nuclear Power Plant  

Code of Federal Regulations, 2012 CFR

...Findings on NEPA Issues for License Renewal of Nuclear Power Plants 1 Issue Category 2 Findings 3 Surface Water Quality, Hydrology, and Use (for all plants) Impacts of refurbishment on surface water quality 1 SMALL. Impacts are expected to...

2012-01-01

130

10 CFR Appendix B to Subpart A of... - Environmental Effect of Renewing the Operating License of a Nuclear Power Plant  

Code of Federal Regulations, 2013 CFR

...Findings on NEPA Issues for License Renewal of Nuclear Power Plants 1 Issue Category 2 Findings 3 Surface Water Quality, Hydrology, and Use (for all plants) Impacts of refurbishment on surface water quality 1 SMALL. Impacts are expected to...

2013-01-01

131

Integrating Variable Renewable Energy in Electric Power Markets: Best Practices from International Experience, Summary for Policymakers  

SciTech Connect

Many countries -- reflecting very different geographies, markets, and power systems -- are successfully managing high levels of variable renewable energy on the electric grid, including that from wind and solar energy. This document summarizes policy best practices that energy ministers and other stakeholders can pursue to ensure that electricity markets and power systems can effectively coevolve with increasing penetrations of variable renewable energy. There is no one-size-fits-all approach; each country studied has crafted its own combination of policies, market designs, and system operations to achieve the system reliability and flexibility needed to successfully integrate renewables. Notwithstanding this diversity, the approaches taken by the countries studied all coalesce around five strategic areas: lead public engagement, particularly for new transmission; coordinate and integrate planning; develop rules for market evolution that enable system flexibility; expand access to diverse resources and geographic footprint of operations; and improve system operations. This study also emphatically underscores the value of countries sharing their experiences. The more diverse and robust the experience base from which a country can draw, the more likely that it will be able to implement an appropriate, optimized, and system-wide approach.

Cochran, J.; Bird, L.; Heeter, J.; Arent, D. A.

2012-04-01

132

Implications of the deep circulation and ventilation of the Indian Ocean on the renewal mechanism of North Atlantic Deep Water  

Microsoft Academic Search

In the Indian Ocean sector of the ``great ocean conveyor'' scheme the North Atlantic Deep Water (NADW) replacement is realized by the transformation of the sinking Circumpolar Deep Water (CDW) from the Southern Ocean to a prevailingly upward flow in the northern Indian Ocean. This water -mass transformation scenario has been studied by using hydrographic data including potential temperature, salinity,

Yuzhu You

2000-01-01

133

Overview of Ocean Wave and Tidal Energy Lingchuan Mei  

E-print Network

and consistency can ensure us ocean a dependable source of power that we can rely on. However, wave and tidal. keywords--Renewable power resource, Marine energy, wave energy, tidal energy. I. INTRODUCTION For recentOverview of Ocean Wave and Tidal Energy Lingchuan Mei Department of Electrical Engineering Columbia

Lavaei, Javad

134

Design and optimization of the power cycle and the heat exchangers for an ocean thermal power system  

Microsoft Academic Search

A comprehensive digital computer design model for a closed Rankine power cycle utilizing the temperature potential of two ocean currents which provide the heat source and heat sink for the power cycle is presented. A simplified plate-fin heat exchanger surface geometry is proposed for use by both the evaporator and condenser. A detailed numerical design technique is presented for the

J. W. Connell III

1975-01-01

135

Concentrating on Solar Power in a Trans-Mediterranean Renewable Energy Co-Operation  

NASA Astrophysics Data System (ADS)

Combining the large demand of clean electricity in Europe (EU) with the large potential of solar electricity generation from concentrating solar power stations (CSP) in the Middle East and North Africa (MENA) can provide both climate protection and development for both regions and lead to environmental, economical and social sustainability. The presentation will address the concept of solar cogeneration of electricity and desalted water and the scope of generating clean power for MENA and Europe while providing large quantities of freshwater for the MENA countries. Costs and benefits of the concept will be quantified, and the first steps to realisation within the Trans-Mediterranean Renewable Energy Co-Operation TREC are presented. After running through the technology learning curve within about 10-15 years, concentrated solar electricity will be generated at a cost of roughly 4 ct/kWh. Importing solar power from North Africa to Europe, will add 1 ct/kWh, thus being competitive with new fuel fired plants. The total initial support of about 1 billion € needed to trigger CSP market introduction and to achieve forever low electricity costs in the EU and MENA, equals 25 % of the German annual coal subsidies, 1 month of EU agronomic-subsidies or 1 day of US military expenses and could be provided in form of public investment, soft loans or feed-in guaranties like the German Renewable Energy Act.

Trieb, F.; Kronshage, S.; Knies, G.

2004-12-01

136

A resonant point absorber of ocean-wave power  

Microsoft Academic Search

A system for absorbing and utilizing the energy carried by ocean waves is discussed. The 'point absorber' considered is a system in which the horizontal extent is much smaller than one wavelength. The point absorber is optimized for efficient energy conversion. The resonant characteristic frequency of the system is at all times tuned to the characteristic frequency of the wave.

K. Budar; J. Falnes

1975-01-01

137

Economic and technological aspects of the market introduction of renewable power technologies  

NASA Astrophysics Data System (ADS)

Renewable energy, if developed and delivered with appropriate technologies, is cleaner, more evenly distributed, and safer than conventional energy systems. Many countries and several states in the United States promote the development and introduction of technologies for "green" electricity production. This dissertation investigates economic and technological aspects of this process for wind energy. In liberalized electricity markets, policy makers use economic incentives to encourage the adoption of renewables. Choosing from a large range of possible policies and instruments is a multi-criteria decision process. This dissertation evaluates the criteria used and the trade-offs among the criteria, and develops a hierarchical flow scheme that policy makers can use to choose the most appropriate policy for a given situation. Economic incentives and market transformation programs seek to reduce costs through mass deployment in order to make renewable technologies competitive. Cost reduction is measured in "experience curves" that posit negative exponential relationships between cumulative deployment and production cost. This analysis reveals the weaknesses in conventional experience curve analyses for wind turbines, and concludes that the concept is limited by data availability, a weak conceptual foundation, and inappropriate statistical estimation. A revised model specifies a more complete set of economic and technological forces that determine the cost of wind power. Econometric results indicate that experience and upscaling of turbine sizes accounted for the observed cost reduction in wind turbines in the United States, Denmark and Germany between 1983 and 2001. These trends are likely to continue. In addition, future cost reductions will result from economies of scale in production. Observed differences in the performance of theoretically equivalent policy instruments could arise from economic uncertainty. To test this hypothesis, a methodology for the quantitative comparison of economic incentive schemes and their effect on uncertainty and investor behavior in renewable power markets is developed using option value theory of investment. Critical investment thresholds compared with actual benefit-cost ratios for several case studies in Germany indicate that uncertainty in prices for wind power and green certificates would delay investment. In Germany, the fixed-tariff system effectively removes this barrier.

Worlen, Christine M.

138

The vulnerabilities of the power-grid system: renewable microgrids as an alternative source of energy.  

PubMed

The objective of this paper is to analyse the vulnerabilities of current power-grid systems and to propose alternatives to using fossil fuel power generation and infrastructure solutions in the form of microgrids, particularly those from renewable energy sources. One of the key potential benefits of microgrids, apart from their inherent sustainability and ecological advantages, is increased resilience. The analysis is targeted towards the context of business process outsourcing in India. However, much of the research on vulnerabilities has been derived from the USA and as such many of the examples cite vulnerabilities in the USA and other developed economies. Nevertheless, the vulnerabilities noted are to a degree common to all grid systems, and so the analysis may be more broadly applicable. PMID:20494879

Meyer, Victor; Myres, Charles; Bakshi, Nitin

2010-03-01

139

Combined heat and power (cogeneration) plant based on renewable energy sources and electrochemical hydrogen systems  

NASA Astrophysics Data System (ADS)

The layout of a combined heat and power (cogeneration) plant based on renewable energy sources (RESs) and hydrogen electrochemical systems for the accumulation of energy via the direct and inverse conversion of the electrical energy from RESs into the chemical energy of hydrogen with the storage of the latter is described. Some efficient technical solutions on the use of electrochemical hydrogen systems in power engineering for the storage of energy with a cyclic energy conversion efficiency of more than 40% are proposed. It is shown that the storage of energy in the form of hydrogen is environmentally safe and considerably surpasses traditional accumulator batteries by its capacitance characteristics, being especially topical in the prolonged absence of energy supply from RESs, e.g., under the conditions of polar night and breathless weather. To provide the required heat consumption of an object during the peak period, it is proposed to burn some hydrogen in a boiler house.

Grigor'ev, S. A.; Grigor'ev, A. S.; Kuleshov, N. V.; Fateev, V. N.; Kuleshov, V. N.

2015-02-01

140

Energy storage for variable renewable energy resource integration — A regional assessment for the Northwest Power Pool (NWPP)  

Microsoft Academic Search

This paper addresses the following key questions in the discussion on the integration of renewable energy resources in the Pacific Northwest power grid: a) what will be the future balancing requirement to accommodate a simulated expansion of wind energy resources from 3.3 GW in 2008 to 14.4 GW in 2019 in the Northwest Power Pool (NWPP), and b) what are

Michael CW Kintner-Meyer; Chunlian Jin; Patrick J. Balducci; Marcelo A. Elizondo; Xinxin Guo; Tony B. Nguyen; Francis K. Tuffner; Vilayanur V. Viswanathan

2011-01-01

141

A Review of Hybrid Renewable\\/Alternative Energy Systems for Electric Power Generation: Configurations, Control, and Applications  

Microsoft Academic Search

This paper, prepared by a special task force of the IEEE PES Renewable Technologies Subcommittee, is a review of hybrid renewable\\/alternative energy (RE\\/AE) power generation systems focusing on energy sustainability. It highlights some important issues and challenges in the design and energy manage- ment of hybrid RE\\/AE systems. System configurations, generation unit sizing, storage needs, and energy management and control

M. H. Nehrir; C. Wang; K. Strunz; H. Aki; R. Ramakumar; J. Bing; Z. Miao; Z. Salameh

2011-01-01

142

On the Patterns of Wind-Power Input to the Ocean Circulation FABIEN ROQUET AND CARL WUNSCH  

E-print Network

On the Patterns of Wind-Power Input to the Ocean Circulation FABIEN ROQUET AND CARL WUNSCH received 1 February 2011, in final form 12 July 2011) ABSTRACT Pathways of wind-power input into the ocean pumping, with a pattern determined by the wind curl rather than the wind itself. Regions of power

Wunsch, Carl

143

Advancements in power electronics and drives in interface with growing renewable energy resources  

Microsoft Academic Search

The whole world is now concentrating on advancing their pool of renewable energy resources. Immense growth has happened in the field of renewable energy and the energy harvesting methods in the past decade. It is estimated that there is still a huge potential of growth remaining in the field of renewable energy resources in the coming years. Generation of renewable

Arindam Chakraborty

2011-01-01

144

Abstract--Wind energy is the fastest growing source of renewable energy in the power industry and it will continue to  

E-print Network

1 Abstract--Wind energy is the fastest growing source of renewable energy in the power industry fault conditions. Index Terms--induction generators, wind power generation, fault tolerance. I of energy. Wind energy is the fastest growing source of renewable energy in the power industry

Tolbert, Leon M.

145

Energy system modelling - interactions and synergies in a highly renewable Pan-European power system  

NASA Astrophysics Data System (ADS)

It is very likely that the European power supply system will be transformed in the next decades to a low carbon system based almost entirely on Renewable Energy Sources (RES). However, due to the natural fluctuations of the most powerful RES (wind and solar energy), it is also very likely that a significant amount of balancing and controllable backup power capacities will be required to ensure a stable grid operation. This implies high additional investments and operating costs. Therefore this work provides an overview of potential options and possibly more cost-effective alternatives to the installation of costly storage capacities, namely grid expansion, demand side management, an optimised mix between different RES as well as the use of overcapacities. Furthermore, the paper provides an approximation of the maximum RES penetration of the German electricity system in the absence of significant storage capacities. Our calculations show that from a numerical perspective on average approximately half of the load can be met by RES if flexible conventional power stations would provide the remaining electricity demand. However, in a 100% RES scenario a significant amount of storage capacities as well as limited overcapacities are required to ensure a reliable electricity supply.

Weitemeyer, Stefan; Kleinhans, David; Vogt, Thomas; Agert, Carsten

2014-12-01

146

Economics of Ocean Thermal Energy Conversion (OTEC): Luis A. Vega Ph.D., National Marine Renewable Energy Center at the University of Hawai'i  

E-print Network

power cables, to shore stations, followed, in about 20 years, with OTEC factories deployed along.D., National Marine Renewable Energy Center at the University of Hawai'i Copyright 2010, Offshore Technology Conference This paper was prepared for presentation at the 2010 Offshore Technology Conference held

147

Integrating Variable Renewable Energy in Electric Power Markets: Best Practices from International Experience (Fact Sheet)  

SciTech Connect

Many countries--reflecting very different geographies, markets, and power systems--are successfully managing high levels of variable renewable energy (RE) on the grid. Australia (South Australia), Denmark, Germany, Ireland, Spain, and the United States (Colorado and Texas), for example, have effectively integrated variable RE utilizing diverse approaches. Analysis of the results from these case studies reveals a wide range of mechanisms that can be used to accommodate high penetrations of variable RE (e.g., from new market designs to centralized planning). Nevertheless, the myriad approaches collectively suggest that governments can best enable variable RE grid integration by implementing best practices in five areas of intervention: lead public engagement, particularly for new transmission; coordinate and integrate planning; develop rules for market evolution that enable system flexibility; expand access to diverse resources and geographic footprint of operations; and improve system operations.

Not Available

2014-10-01

148

75 FR 6378 - Covanta Pylmouth Renewable Energy Limited Partnership Covanta Energy Marketing LLC Covanta Power...  

Federal Register 2010, 2011, 2012, 2013

...ER10-409-000, ER10-410-000] Covanta Pylmouth Renewable Energy Limited Partnership Covanta Energy Marketing LLC...notice that, on February 1, 2010, Covanta Pylmouth Renewable Energy Limited Partnership, Covanta Energy Marketing...

2010-02-09

149

77 FR 58181 - Power Resources, Inc., Smith Ranch Highland Uranium Project; License Renewal Request, Opportunity...  

Federal Register 2010, 2011, 2012, 2013

...Resources, Inc., Smith Ranch Highland Uranium Project; License Renewal Request, Opportunity...referenced. The Smith Ranch Highland Uranium Project license renewal request is available...Mandeville, Senior Project Manager, Uranium Recovery Licensing Branch, Division...

2012-09-19

150

Optimal mix of renewable power generation in the MENA region as a basis for an efficient electricity supply to europe  

NASA Astrophysics Data System (ADS)

Renewable Energy sources are gaining importance in the Middle East and North Africa (MENA) region. The purpose of this study is to quantify the optimal mix of renewable power generation in the MENA region, taking Morocco as a case study. Based on hourly meteorological data and load data, a 100% solar-plus-wind only scenario for Morocco is investigated. For the optimal mix analyses, a mismatch energy modelling approach is adopted with the objective to minimise the required storage capacities. For a hypothetical Moroccan energy supply system which is entirely based on renewable energy sources, our results show that the minimum storage capacity is achieved at a share of 63% solar and 37% wind power generations.

Alhamwi, Alaa; Kleinhans, David; Weitemeyer, Stefan; Vogt, Thomas

2014-12-01

151

The Energy Harvesting Eel: a small subsurface ocean\\/river power generator  

Microsoft Academic Search

The Energy Harvesting Eel (Eel) is a new device that uses piezoelectric polymers to convert the mechanical flow energy, available in oceans and rivers, to electrical power. Eel generators make use of the regular trail of traveling vortices behind a bluff body to strain the piezoelectric elements; the resulting undulating motion resembles that of a natural eel swimming. Internal batteries

George W. Taylor; Joseph R. Burns; Sean M. Kammann; William B. Powers; Thomas R. Welsh

2001-01-01

152

Hot side heat exchanger for an ocean thermal difference power plant  

Microsoft Academic Search

This paper reports the results of a study to use the kinetic energy of the Gulf Stream to pump the evaporators of an ocean thermal difference power plant. The internal frictional flow in the exchanger was matched to the external potential flow to develop the flow model. The model was merged with a previously developed Rankine cycle analysis of the

R. H. Kirchhoff; J. G. McGowan; J. W. Connell; D. Seluk

1974-01-01

153

Techno-economics of Renewables Rangan Banerjee  

E-print Network

Geothermal power 45TWh electricity and 40 TWh heat 1998 $800-3000/kW 4c/kWh ­ Cost effective #12;Tidal Energy,Water released at low tide. Height Difference - Water Turbines - Power 240 MW plant - La Rance, France 8.4m tidal, Additional Cost #12;Renewable Energy Options Wind Solar Small Hydro Biomass Tidal Energy Wave Energy Ocean

Banerjee, Rangan

154

Potential applications of renewable energy sources, biomass combustion problems in boiler power systems and combustion related environmental issues  

Microsoft Academic Search

This paper describes the potential applications of renewable energy sources to replace fossil fuel combustion as the prime energy sources in various countries, and discusses problems associated with biomass combustion in boiler power systems. Here, the term biomass includes organic matter produced as a result of photosynthesis as well as municipal, industrial and animal waste material. Brief summaries of the

Ayhan Demirbas

2005-01-01

155

Abstract--The integration of variable renewable generation sources continues to be a significant area of focus for power  

E-print Network

area of focus for power system planning. Renewable portfolio standards and initiatives to reduce sources like wind and solar tend to be highly variable in nature. To counter the energy imbalance caused and solar, provide a carbon-free solution for generating electricity domestically. One downside of wind

156

Hawaii Renewable Hydrogen Program Policy Evaluation & Recommendations  

E-print Network

Hawaii Renewable Hydrogen Program Policy Evaluation & Recommendations Final Report August 2012 #12;Hawaii Renewable Hydrogen Program: Policy Recommendations 2 Project Title: Hawaii Renewable Hydrogen of Ocean and Earth Science and Technology ­ Hawaii Natural Energy Institute Award Number: Contract No

157

Economic analysis of biomass power generation schemes under renewable energy initiative with Renewable Portfolio Standards (RPS) in Korea.  

PubMed

An economic analysis of biomass power generation was conducted. Two key technologies--direct combustion with a steam turbine and gasification with a syngas engine--were mainly examined. In view of the present domestic biomass infrastructure of Korea, a small and distributed power generation system ranging from 0.5 to 5 MW(e) was considered. It was found that gasification with a syngas engine becomes more economically feasible as the plant size decreases. Changes in the economic feasibilities with and without RPS or heat sales were also investigated. A sensitivity analysis of each system was conducted for representative parameters. Regarding the cost of electricity generation, electrical efficiency and fuel cost significantly affect both direct combustion and gasification systems. Regarding the internal rate of return (IRR), the heat sales price becomes important for obtaining a higher IRR, followed by power generation capacity and electrical efficiency. PMID:21856151

Moon, Ji-Hong; Lee, Jeung-Woo; Lee, Uen-Do

2011-10-01

158

Renewable Electricity Futures Study. Volume 4: Bulk Electric Power Systems: Operations and Transmission Planning  

SciTech Connect

The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).

Milligan, M.; Ela, E.; Hein, J.; Schneider, T.; Brinkman, G.; Denholm, P.

2012-06-01

159

Interacting ocean waves explain powerful seafloor canyon flows  

NASA Astrophysics Data System (ADS)

Off the southwestern coast of Taiwan the Gaoping Submarine Canyon meanders in a giant backward S shape as it stretches southwestward toward the South China Sea. In the canyon, a 200-meter-deep cut into the seafloor that lies 300 meters below the sea's surface, the waters carry an usually large amount of internal tidal power—9.1 megawatts from the canyon's mouth to its head. Along with the strong flows a region of enhanced vertical mixing sits at the canyon's head. Researchers had previously attributed the anomalous flows to internal waves pushing through the Gaoping Canyon, though the source of the energy remained an open question.

Schultz, Colin

2012-02-01

160

Reconstruction of 137Cs activity in the ocean following the Fukushima Daiichi Nuclear Power Plant Accident  

NASA Astrophysics Data System (ADS)

A series of accidents at the Fukushima Dai-ichi Nuclear Power Plant following the earthquake and tsunami of 11 March 2011 resulted in the release of radioactive materials to the ocean by two major pathways, direct release from the accident site and atmospheric deposition. We reconstructed spatiotemporal variability of 137Cs activity in the ocean by the comparison model simulations and observed data. We employed a regional scale and the North Pacific scale oceanic dispersion models, an atmospheric transport model, a sediment transport model, a dynamic biological compartment model for marine biota and river runoff model to investigate the oceanic contamination. Direct releases of 137Cs were estimated for more than 2 years after the accident by comparing simulated results and observed activities very close to the site. The estimated total amounts of directly released 137Cs was 3.6±0.7 PBq. Directly release rate of 137Cs decreased exponentially with time by the end of December 2012 and then, was almost constant. The daily release rate of 137Cs was estimated to be 3.0 x 1010 Bq day-1 by the end of September 2013. The activity of directly released 137Cs was detectable only in the coastal zone after December 2012. Simulated 137Cs activities attributable to direct release were in good agreement with observed activities, a result that implies the estimated direct release rate was reasonable, while simulated 137Cs activities attributable to atmospheric deposition were low compared to measured activities. The rate of atmospheric deposition onto the ocean was underestimated because of a lack of measurements of dose rate and air activity of 137Cs over the ocean when atmospheric deposition rates were being estimated. Observed 137Cs activities attributable to atmospheric deposition in the ocean helped to improve the accuracy of simulated atmospheric deposition rates. Although there is no observed data of 137Cs activity in the ocean from 11 to 21 March 2011, observed data of marine biota should reflect the history of 137Cs activity in this early period. The comparisons between simulated 137Cs activity of marine biota by a dynamic biological compartment and observed data also suggest that simulated 137Cs activity attributable to atmospheric deposition was underestimated in this early period. In addition, river runoff model simulations suggest that the river flux of 137Cs to the ocean was effective to the 137Cs activity in the ocean in this early period. The sediment transport model simulations suggests that the inventory of 137Cs in sediment was less than 10

Tsumune, Daisuke; Aoyama, Michio; Tsubono, Takaki; Tateda, Yutaka; Misumi, Kazuhiro; Hayami, Hiroshi; Toyoda, Yasuhiro; Maeda, Yoshiaki; Yoshida, Yoshikatsu; Uematsu, Mitsuo

2014-05-01

161

Renewable Electricity Futures Study  

E-print Network

Renewable Electricity Futures Study Bulk Electric Power Systems: Operations and Transmission by the Alliance for Sustainable Energy, LLC. #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Suggested Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory

162

Renewables-to-reefs? - Decommissioning options for the offshore wind power industry.  

PubMed

The offshore wind power industry is relatively new but increasing globally, hence it is important that the whole life-cycle is managed. The construction-operation-decommissioning cycle is likely to take 20-30years and whilst decommissioning may not be undertaken for many years, its management needs to be addressed in both current and future marine management regimes. This can be defined within a Drivers-Activities-Pressures-State Changes-Impacts (on human Welfare)-Responses framework. This paper considers the main decommissioning options - partial or complete removal of all components. A SWOT analysis shows environmental and economic benefits in partial as opposed to complete removal, especially if habitat created on the structures has conservation or commercial value. Benefits (and repercussions) are defined in terms of losses and gains of ecosystem services and societal benefits. The legal precedents and repercussions of both options are considered in terms of the 10-tenets of sustainable marine management. Finally a 'renewables-to-reefs' programme is proposed. PMID:25467865

Smyth, Katie; Christie, Nikki; Burdon, Daryl; Atkins, Jonathan P; Barnes, Richard; Elliott, Michael

2015-01-15

163

Hybrid Design of Electric Power Generation Systems Including Renewable Sources of Energy  

ERIC Educational Resources Information Center

With the stricter environmental regulations and diminishing fossil-fuel reserves, there is now higher emphasis on exploiting various renewable sources of energy. These alternative sources of energy are usually environmentally friendly and emit no pollutants. However, the capital investments for those renewable sources of energy are normally high,…

Wang, Lingfeng; Singh, Chanan

2008-01-01

164

The Integration of Renewable Energy Sources into Electric Power Distribution Systems, Vol. II Utility Case Assessments  

Microsoft Academic Search

Electric utility distribution system impacts associated with the integration of renewable energy sources such as photovoltaics (PV) and wind turbines (WT) are considered in this project. The impacts are expected to vary from site to site according to the following characteristics: the local solar insolation and\\/or wind characteristics, renewable energy source penetration level, whether battery or other energy storage systems

Zaininger

1994-01-01

165

GENERATING ELECTRICITY USING OCEAN WAVES  

E-print Network

GENERATING ELECTRICITY USING OCEAN WAVES A RENEWABLE SOURCE OF ENERGY REPORT FOR THE HONG KONG ELECTRIC COMPANY LIMITED Dr L F Yeung Mr Paul Hodgson Dr Robin Bradbeer July 2007 #12;Ocean Waves............................................................................................................3 OCEAN WAVE THEORY

Bradbeer, Robin Sarah

166

The energy of the ocean thermal resource and the second-law efficiency of idealized ocean thermal energy conversion power cycles  

NASA Astrophysics Data System (ADS)

A formula is developed to compute the maximum amount of work which can be extracted from a given combined mass of warm and cold ocean water (a quantity called the energy of the ocean thermal resources). Second it compares the second-law efficiencies of various proposed ocean thermal energy conversion power cycles to determine which best utilizes the energy of the ocean thermal resource. The second-law efficiencies of the multicomponent working fluid cycle, the Beck cycle, and the open and closed single- and multiple-stage Rankine cycles are compared. These types of OTEC power plants are analyzed in a consistent manner which assumes that all deviations from a plant making use of all the energy (one with a second-law efficiency of 100%) occurs because of irreversible transfer of heat across a finite temperature difference. Conversion of thermal energy to other forms is assumed to occur reversibly. The comparison of second-law efficiencies of various OTEC power cycles shows that the multistage Rankine open cycle with just three stages has the potential of best using the energy of the ocean thermal resource.

Johnson, D. H.

1982-09-01

167

Greenhouse Gas and Air Pollutant Emission Reduction Potentials of Renewable Energy—Case Studies on Photovoltaic and Wind Power Introduction Considering Interactions among Technologies in Taiwan  

Microsoft Academic Search

To achieve higher energy security and lower emission of greenhouse gases (GHGs) and pollutants, the development of renewable energy has attracted much attention in Taiwan. In addition to its contribution to the enhancement of reliable indigenous resources, the introduction of renewable energy such as photovoltaic (PV) and wind power systems reduces the emission of GHGs and air pollutants by substituting

Yu-Ming Kuo; Yasuhiro Fukushima; Tracy Glenz; Lisa Brosseau; Richard Hoffbeck; Kyoko Yamashita; Naomichi Yamamoto; Atsushi Mizukoshi; Miyuki Noguchi; Yueyong Ni; Yukio Yanagisawa; Yongping Li; Guohe Huang; James Schwab; John Spicer; Kenneth Demerjian; Mark Gibson; Judith Guernsey; Stephen Beauchamp; David Waugh; Mathew Heal; Jeffrey Brook; Robert Maher; Graham Gagnon; Johnny McPherson; Barbara Bryden; Richard Gould; Liming Zhou; Philip Hopke; Weixiang Zhao; Elisabeth Hawley; Neven Kresic; Alexandra Wright; Michael Kavanaugh; Pat Saathoff; Amit Gupta; Ted Stathopoulos; Louis Lazure; ABM Khan; Nigel Clark; Mridul Gautam; W. Wayne; Gregory Thompson; Donald Lyons

2009-01-01

168

Oceans of Energy?  

NSDL National Science Digital Library

This lesson focuses on the importance of ocean exploration as a way to learn how to capture, control, and distribute renewable ocean energy resources. Students begin by identifying ways the ocean can generate energy and then research one ocean energy source using the Internet. Finally, students build a Micro-Hydro Electric Generator.

NOAA Ocean Explorer

169

Renewable Energy  

NASA Astrophysics Data System (ADS)

Stimulated by recent technological developments and increasing concern over the sustainability and environmental impact of conventional fuel usage, the prospect of producing clean, sustainable power in substantial quantities from renewable energy sources arouses interest around the world. This book provides a comprehensive overview of the principal types of renewable energy--including solar, thermal, photovoltaics, bioenergy, hydro, tidal, wind, wave, and geothermal. In addition, it explains the underlying physical and technological principles of renewable energy and examines the environmental impact and prospects of different energy sources. With more than 350 detailed illustrations, more than 50 tables of data, and a wide range of case studies, Renewable Energy, 2/e is an ideal choice for undergraduate courses in energy, sustainable development, and environmental science. New to the Second Edition ·Full-color design ·Updated to reflect developments in technology, policy, attitides ·Complemented by Energy Systems and Sustainability edited by Godfrey Boyle, Bob Everett and Janet Ramage, all of the Open University, U.K.

Boyle, Godfrey

2004-05-01

170

Clean high-energy density renewable power generation systems with soft-switching sliding mode control laws  

Microsoft Academic Search

This paper reports the design, analysis, evaluation and characterization of closed-loop clean renewable power generation systems. For the aforementioned multi-input\\/multi-output systems, we design proportional-integral and soft-switching sliding mode control laws to guarantee: (1) Efficient mechanical-to-electrical, electrical-to-electrical and electrical-to-chemical energy conversions; (2) Enabling windor hydro-energy harvesting capabilities; (3) Optimal dynamics, robustness and stability. The prototypes of portable high-energy-density power systems were

Trevor C. Smith; Sergey Edward Lyshevski

2011-01-01

171

Area Solar energy production BACKGROUND -All renewable energies, except for geothermal and tidal, derive their energy from the sun. By harnessing the power of  

E-print Network

, except for geothermal and tidal, derive their energy from the sun Area Solar energy production ­ BACKGROUND - All renewable energies. By harnessing the power of the sun, a solar solution can be a zero emissions energy

Keinan, Alon

172

Supporting Solar Power in Renewables Portfolio Standards: Experience from the United States  

SciTech Connect

Among the available options for encouraging the increased deployment of renewable electricity, renewables portfolio standards (RPS) have become increasingly popular. The RPS is a relatively new policy mechanism, however, and experience with its use is only beginning to emerge. One key concern that has been voiced is whether RPS policies will offer adequate support to a wide range of renewable energy technologies and applications or whether, alternatively, RPS programs will favor a small number of the currently least-cost forms of renewable energy. This report documents the design of and early experience with state-level RPS programs in the United States that have been specifically tailored to encourage a wider diversity of renewable energy technologies, and solar energy in particular. As shown here, state-level RPS programs specifically designed to support solar have already proven to be an important, albeit somewhat modest, driver for solar energy deployment, and those impacts are projected to continue to build in the coming years. State experience in supporting solar energy with RPS programs is mixed, however, and full compliance with existing requirements has not been achieved. The comparative experiences described herein highlight the opportunities and challenges of applying an RPS to specifically support solar energy, as well as the importance of policy design details to ensuring that program goals are achieved.

Wiser, Ryan; Barbose, Galen; Holt, Edward

2010-10-01

173

Distribution of oceanic 137Cs from the Fukushima Dai-ichi Nuclear Power Plant simulated numerically by a regional ocean model.  

PubMed

Radioactive materials were released to the environment from the Fukushima Dai-ichi Nuclear Power Plant as a result of the reactor accident after the Tohoku earthquake and tsunami of 11 March 2011. The measured (137)Cs concentration in a seawater sample near the Fukushima Dai-ichi Nuclear Power Plant site reached 68 kBq L(-1) (6.8 × 10(4)Bq L(-1)) on 6 April. The two major likely pathways from the accident site to the ocean existed: direct release of high radioactive liquid wastes to the ocean and the deposition of airborne radioactivity to the ocean surface. By analysis of the (131)I/(137)Cs activity ratio, we determined that direct release from the site contributed more to the measured (137)Cs concentration than atmospheric deposition did. We then used a regional ocean model to simulate the (137)Cs concentrations resulting from the direct release to the ocean off Fukushima and found that from March 26 to the end of May the total amount of (137)Cs directly released was 3.5 ± 0.7 PBq ((3.5 ± 0.7) × 10(15)Bq). The simulated temporal change in (137)Cs concentrations near the Fukushima Daini Nuclear Power Plant site agreed well with observations. Our simulation results showed that (1) the released (137)Cs advected southward along the coast during the simulation period; (2) the eastward-flowing Kuroshio and its extension transported (137)C during May 2011; and (3) (137)Cs concentrations decreased to less than 10 BqL(-1) by the end of May 2011 in the whole simulation domain as a result of oceanic advection and diffusion. We compared the total amount and concentration of (137)Cs released from the Fukushima Dai-ichi reactors to the ocean with the (137)Cs released to the ocean by global fallout. Even though the measured (137)Cs concentration from the Fukushima accident was the highest recorded, the total released amount of (137)Cs was not very large. Therefore, the effect of (137)Cs released from the Fukushima Dai-ichi reactors on concentration in the whole North Pacific was smaller than that of past release events such as global fallout, and the amount of (137)Cs expected to reach other oceanic basins is negligible comparing with the past radioactive input. PMID:22071362

Tsumune, Daisuke; Tsubono, Takaki; Aoyama, Michio; Hirose, Katsumi

2012-09-01

174

Reburning renewable biomass for emissions control and ash deposition effects in power generation  

E-print Network

Cattle biomass (CB) has been proposed as a renewable, supplementary fuel for co-firing and reburning. Reburning coal with CB has the potential to reduce NOx and Hg emissions from coal fired systems. The present research focuses on three areas...

Oh, Hyuk Jin

2009-05-15

175

Renewable Energy Price-Stability Benefits in Utility Green Power Programs  

SciTech Connect

This paper examines utility experiences when offering the fixed-price benefits of renewable energy in green pricing programs, including the methods utilized and the impact on program participation. It focuses primarily on utility green pricing programs in states that have not undergone electric industry restructuring.

Bird, L. A.; Cory, K. S.; Swezey, B. G.

2008-08-01

176

Multi-criteria assessment of new and renewable energy power plants  

Microsoft Academic Search

The multi-criteria evaluation of new and renewable technologies demonstrates the potential analysis of complex systems. Every energy system under consideration is an entity by itself, defined by the respective number of parameters which are deterministically interrelated according to the physical laws. Sustainability indicators take into account the economic and environmental resources parameters. This paper presents selection of criteria and options

Naim H. Afgan; Maria G. Carvalho

2002-01-01

177

Markov State Model for Optimization of Maintenance and Renewal of Hydro Power Components  

Microsoft Academic Search

In this paper a reliability model is presented which can be used for scheduling and optimization of maintenance and renewal. The deterioration process of technical equipment is modeled by a Markov chain. A framework is proposed how the parameters in the Markov process can be estimated based on a description of the technical condition of components and systems in hydro

T. M. Welte; J. Vatn; J. Heggest

2006-01-01

178

Multi-Fluid Geothermal Energy Systems: Using CO2 for Dispatchable Renewable Power Generation and Grid Stabilization  

NASA Astrophysics Data System (ADS)

Abstract We present an approach to use CO2 to (1) generate dispatchable renewable power that can quickly respond to grid fluctuations and be cost-competitive with natural gas, (2) stabilize the grid by efficiently storing large quantities of energy, (3) enable seasonal storage of solar thermal energy for grid integration, (4) produce brine for power-plant cooling, all which (5) increase CO2 value, rendering CO2 capture to be commerically viable, while (6) sequestering huge quantities of CO2. These attributes reduce carbon intensity of electric power, and enable cost-competitive, dispatchable power from major sources of renewable energy: wind, solar, and geothermal. Conventional geothermal power systems circulate brine as the working fluid to extract heat, but the parasitic power load for this circulation can consume a large portion of gross power output. Recently, CO2 has been considered as a working fluid because its advantageous properties reduce this parasitic loss. We expand on this idea by using multiple working fluids: brine, CO2, and N2. N2 can be separated from air at lower cost than captured CO2, it is not corrosive, and it will not react with the formation. N2 also can improve the economics of energy production and enable energy storage, while reducing operational risk. Extracting heat from geothermal reservoirs often requires submersible pumps to lift brine, but these pumps consume much of the generated electricity. In contrast, our approach drives fluid circulation by injecting supplemental, compressible fluids (CO2, and N2) with high coefficients of thermal expansion. These fluids augment reservoir pressure, produce artesian flow at the producers, and reduce the parasitic load. Pressure augmentation is improved by the thermosiphon effect that results from injecting cold/dense CO2 and N2. These fluids are heated to reservoir temperature, greatly expand, and increase the artesian flow of brine and supplemental fluid at the producers. Rather than using pumps, the thermosiphon directly converts reservoir thermal energy into mechanical energy for fluid circulation. Because stored pressure drives fluid production, the response time is faster than that of conventional geothermal power, already considered to be dispatchable. For conventional geothermal, the parasitic power load is in phase with gross power output. In contrast, our approach can time-shift much of the parasitic power load, which is dominated by the power required to separate N2 from air and compress it for injection. Because N2 is readily available, it can be injected intermittently. Thus, most of the parasitic power load can be shifted to coincide with minimum power demand or when there is a surplus of renewable power. Such a time-shift also allows net power output to be nearly equal to gross power output during peak demand. Energy storage can be almost 100 percent efficient because it is achieved by shifting the parasitic load, which is more efficient than other methods used to store energy and stabilize the grid. This work was performed under the auspices of the U.S. DOE by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

Buscheck, T. A.; Bielicki, J. M.; Randolph, J.; Chen, M.; Hao, Y.; Sun, Y.

2013-12-01

179

Restructuring and renewable energy developments in California:using Elfin to simulate the future California power market  

SciTech Connect

We provide some basic background information on support for renewable in California on the expected operation of the power pool and bilateral markets, and on the three key policy types modeled here. We discuss the Elfin production cost and expansion planning model as well as key assumptions that we made to model the future California pool. We present results from the successful Elfin models runs. We discuss the implications of the study, as well as key areas for future research. Additional information on results, Elfin's expansion planning logic, and resource options can be found in the appendices.

Kirshner, Dan; Kito, Suzie; Marnay, Chris; Pickle, Steve; Schumacher, Katja; Sezgen,Osman; Wiser, Ryan

1998-06-01

180

Renewable energy and telecommunications  

E-print Network

Renewable energy and telecommunications Case study: Energy Systems Week When AK Erlang first used fossil fuels and switch to renewable energy sources. But the unlikely convergence of the two fields lay to be able to deal with. "If we integrate renewable energies, such as wind power, in the electricity grid

181

Ocean Circulation Modeling for Aquatic Dispersion of Liquid Radioactive Effluents from Nuclear Power Plants  

SciTech Connect

Recently, three-dimensional models have been used for aquatic dispersion of radioactive effluents in relation to nuclear power plant siting based on the Notice No. 2003-12 'Guideline for investigating and assessing hydrological and aquatic characteristics of nuclear facility site' of the Ministry of Science and Technology (MOST) in Korea. Several nuclear power plants have been under construction or planed, which are Shin-Kori Unit 1 and 2, Shin-Wolsong Unit 1 and 2, and Shin-Ulchin Unit 1 and 2. For assessing the aquatic dispersion of radionuclides released from the above nuclear power plants, it is necessary to know the coastal currents around sites which are affected by circulation of East Sea. In this study, a three dimensional hydrodynamic model for the circulation of the East Sea of Korea has been developed as the first phase, which is based on the RIAMOM (Research Institute of Applied Mechanics' Ocean Model, Kyushu University, Japan). The model uses the primitive equation with hydrostatic approximation, and uses Arakawa-B grid system horizontally and Z coordinate vertically. Model domain is 126.5 deg. E to 142.5 deg. E of east longitude and 33 deg. N and 52 deg. N of the north latitude. The space of the horizontal grid was 1/12 deg. to longitude and latitude direction and vertical level was divided to 20. This model uses Generalized Arakawa Scheme, Slant Advection, and Mode-Splitting Method. The input data were from JODC (Japan Oceanographic Data Center), KNFRDI (Korea National Fisheries Research and Development Institute), and ECMWF (European Center for Medium-Range Weather Forecasts). The modeling results are in fairly good agreement with schematic patterns of the surface circulation in the East Sea/Japan Sea. The local current model and aquatic dispersion model of the coastal region will be developed as the second phase. The oceanic dispersion experiments will be also carried out by using ARGO Drifter around a nuclear power plant site. (authors)

Chung, Y.G.; Lee, G.B.; Bang, S.Y. [Korea Electric Power Research Institute, 103-16 Munji-Dong, Yuseong-Gu, Daejeon 305-380 (Korea, Republic of); Choi, S.B.; Lee, S.U. [Korea Hydro and Nuclear Power Co., LTD, 167 Samseong-Dong, Gangnam-Gu, Seoul 135-791 (Korea, Republic of); Yoon, J.H. [Research Institute of Applied Physics, Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka, 816-8580 (Japan); Nam, S.Y.; Lee, H.R. [GeoSystem Research Corporation, 306 Hanlim Human Town, 1-40 Geumjeong-Dong, Gunpo-City, Gyeonggi-Do 435-050 (Korea, Republic of)

2006-07-01

182

Quantifiably secure power grid operation, management, and evolution : a study of uncertainties affecting the grid integration of renewables.  

SciTech Connect

This report summarizes findings and results of the Quantifiably Secure Power Grid Operation, Management, and Evolution LDRD. The focus of the LDRD was to develop decisionsupport technologies to enable rational and quantifiable risk management for two key grid operational timescales: scheduling (day-ahead) and planning (month-to-year-ahead). Risk or resiliency metrics are foundational in this effort. The 2003 Northeast Blackout investigative report stressed the criticality of enforceable metrics for system resiliency - the grid's ability to satisfy demands subject to perturbation. However, we neither have well-defined risk metrics for addressing the pervasive uncertainties in a renewable energy era, nor decision-support tools for their enforcement, which severely impacts efforts to rationally improve grid security. For day-ahead unit commitment, decision-support tools must account for topological security constraints, loss-of-load (economic) costs, and supply and demand variability - especially given high renewables penetration. For long-term planning, transmission and generation expansion must ensure realized demand is satisfied for various projected technological, climate, and growth scenarios. The decision-support tools investigated in this project paid particular attention to tailoriented risk metrics for explicitly addressing high-consequence events. Historically, decisionsupport tools for the grid consider expected cost minimization, largely ignoring risk and instead penalizing loss-of-load through artificial parameters. The technical focus of this work was the development of scalable solvers for enforcing risk metrics. Advanced stochastic programming solvers were developed to address generation and transmission expansion and unit commitment, minimizing cost subject to pre-specified risk thresholds. Particular attention was paid to renewables where security critically depends on production and demand prediction accuracy. To address this concern, powerful filtering techniques for spatio-temporal measurement assimilation were used to develop short-term predictive stochastic models. To achieve uncertaintytolerant solutions, very large numbers of scenarios must be simultaneously considered. One focus of this work was investigating ways of reasonably reducing this number.

Gray, Genetha Anne; Watson, Jean-Paul [Sandia National Laboratories, Albuquerque, NM; Silva Monroy, Cesar Augusto [Sandia National Laboratories, Albuquerque, NM; Gramacy, Robert B. [University of Chicago, Chicago, IL

2013-09-01

183

A simulation environment for the techno-economic performance prediction of water and power cogeneration systems using renewable and fossil energy sources  

Microsoft Academic Search

Small-scale decentralised water and power cogeneration systems with hybrid renewable and fossil power and process heat supply must not only exhibit a technically sound design, but the chosen configuration must also be economically viable. The availability of competing technical solutions to generate the commodities drinking water and electricity in combination with the uncertainty related with the prediction of future scenarios

Erhard W. Perz; Stefan Bergmann

2007-01-01

184

2013 Renewable Energy Data Book (Book)  

SciTech Connect

This Renewable Energy Data Book for 2013 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar power, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investment.

Esterly, S.

2014-12-01

185

Analysis of Concentrating Solar Power with Thermal Energy Storage in a California 33% Renewable Scenario  

SciTech Connect

This analysis evaluates CSP with TES in a scenario where California derives 33% of its electricity from renewable energy sources. It uses a commercial grid simulation tool to examine the avoided operational and capacity costs associated with CSP and compares this value to PV and a baseload generation with constant output. Overall, the analysis demonstrates several properties of dispatchable CSP, including the flexibility to generate during periods of high value and avoid generation during periods of lower value. Of note in this analysis is the fact that significant amount of operational value is derived from the provision of reserves in the case where CSP is allowed to provide these services. This analysis also indicates that the 'optimal' configuration of CSP could vary as a function of renewable penetration, and each configuration will need to be evaluated in terms of its ability to provide dispatchable energy, reserves, and firm capacity. The model can be used to investigate additional scenarios involving alternative technology options and generation mixes, applying these scenarios within California or in other regions of interest.

Denholm, P.; Wan, Y. H.; Hummon, M.; Mehos, M.

2013-03-01

186

State Renewable Electricity Profiles  

EIA Publications

Presents a summary of current and recent historical data for the renewable electric power industry. The data focuses on net summer capacity and net generation for each type of renewable generator, as well as fossil-fired and nuclear power plant types, for the period 2006 through 2010.

2012-01-01

187

Atmospheric correction of ocean color imagery: Use of Junge power-law size distribution  

NASA Astrophysics Data System (ADS)

In this study, a new atmospheric correction algorithm capable of simultaneously retrieving aerosol and ocean optical parameters under the presence of both highly- and weakly-absorbing aerosols has been developed. It is suggested that the radiative properties of realistic aerosols can be well simulated with those resulting from the Junge power-law aerosol models. The use of the latter makes it possible to vary the atmospheric radiative properties continuously through a variation of the aerosol parameters. The atmosphere is assumed to consist of two, plane parallel and horizontally homogeneous, layers with the Fresnel reflecting bottom boundary. The radiative properties of the ocean water are assumed to be those of Case 1 waters. A system of non-linear equations is constructed for the radiances detected by a multi-band remote sensor and, is subsequently solved using non- linear optimization procedures. The algorithm's performance has been studied with simulated test data. It is shown that the aerosol single scattering albedo (?0) and the pigment concentration (C) can be excellently retrieved to within 6% and 10% respectively even under the presence of the instrument calibration errors. However, because of significant differences in the scattering phase functions for the test and power-law distributions, large error is possible in the estimate of the aerosol optical thickness. The positive results for the pigment concentration C suggest that the detailed shape of the aerosol scattering phase function is not needed for the atmospheric correction of ocean color sensors. The relevant parameters are the single scattering albedo and the relative spectral variation of the optical depth. The vertical distribution of aerosols and a spectral variation of the aerosol's refractive index have adverse effects on the accuracy of retrievals. Fortunately, these cases are easily identifiable in the course of non-linear optimization procedure as long as the data ``fit'' objective function SLSQ becomes relatively large, i.e., 5-6%, in contrast to less than 1% in other test cases. The algorithm was incorporated into the SeaWiFS image processing system SeaDAS. The results demonstrate that the algorithm's performance is superior to the NASA Standard Atmospheric Correction algorithm. A significant advantage of the new approach is that realistic multicomponent aerosol models are not required for the retrieval of C.

Chomko, Roman M.

1999-12-01

188

Detailed Evaluation of Renewable Energy Power System Operation: A Summary of the European Union Hybrid Power System Component Benchmarking Project; Preprint  

SciTech Connect

This paper describes the results of the European Union (EU) Benchmarking Project, a 3-year, multi-agency research project to improve the design of renewable-based hybrid power systems based on the analysis of existing systems and the benchmarking of specific system components, most critically batteries. Based on the analysis of hundreds of power systems, efforts were made to classify different categories of similar use and then determine component-specific recommendations that will allow more consistent and longer product life. Based on the classification of different use types, assessments of critical ware factors could be conducted and recommendations of appropriate component selection undertaken. The project results make it possible to match most systems to a use category, thus allowing recommendations to improve project life.

Baring-Gould, E. I.; Wenzl, H.; Kaiser, R.; Wilmot, N.; Mattera, F.; Tselepis, S.; Nieuwenhout, F.; Rodrigues, C.; Perujo, A.; Ruddell, A.; Lindsager, P.; Bindner, H.; Cronin, T.; Svoboda, V.; Manwell, J.

2005-05-01

189

Provision of Renewable Energy using Green Certificates: Market Power and Price Limits  

Microsoft Academic Search

We formulate an analytic equilibrium model for simultaneously functioning electricity market and a market for Green Certificates. The major focus of the paper is the effect of market power in a Green Certificate system. One of the main results from the analysis is that the certificate system faced with market power basically may collapse into a system of per unit

Eirik S. Amundsen; Gjermund Nese

2012-01-01

190

Financing Home Energy and Renewable Energy Improvements with FHA PowerSaver Loans (Fact Sheet)  

SciTech Connect

This fact sheet is a revision to the PowerSaver Loan Benefits fact sheet from April 2014. It describes how the U.S. Department of Housing and Urban Development (HUD) PowerSaver Loan Program offers borrowers low-cost FHA-insured loans to make energy-saving improvements to their homes.

Not Available

2014-07-01

191

An utility interactive power electronics interface for alternate\\/renewable energy systems  

Microsoft Academic Search

The foreseeable shortages in conventional sources of electric power has increased the emphasis on the research and development of alternate sources of energy. In order to make a noteworthy impact, the alternate sources of energy need to be utility interactive by means of a power electronic interface (a DC to AC converter). The inherent assumption in the control of DC

Wajiha Shireen; M. S. Arefeen

1996-01-01

192

The effectiveness of plug-in hybrid electric vehicles and renewable power in support of holistic environmental goals: Part 1 - Evaluation of aggregate energy and greenhouse gas performance  

NASA Astrophysics Data System (ADS)

A study that analyzes the effectiveness of plug-in hybrid vehicles (PHEVs) to meet holistic environmental goals has been performed across the combined electricity and light-duty transportation sectors. PHEV penetration levels are varied from 0 to 60% and base renewable penetration levels are varied from 10 to 45%. Part 1 of the study focuses on CO2 emissions, fuel usage, and the renewable penetration level of individual and combined energy sectors. The effect on grid renewable penetration level depends on two factors: the additional vehicle load demand acting to decrease renewable penetration, and the controllability of vehicle charging acting to reduce curtailment of renewable power. PHEV integration can reduce CO2 emissions and fuel usage and increase the aggregate renewable energy share compared to the no-vehicle case. The benefits of isolated PHEV integration are slightly offset by increased CO2 emissions and fuel usage by the electric grid. Significant benefits are only realized when PHEVs are appropriately deployed in conjunction with renewable energy resources, highlighting important synergies between the electric and light-duty transportation sectors for meeting sustainability goals.

Tarroja, Brian; Eichman, Joshua D.; Zhang, Li; Brown, Tim M.; Samuelsen, Scott

2014-07-01

193

Poster presented at the OCEANS'11 Conference, September, 2011 Seeking Optimal Geometry of a Heaving Body for Improved Wave Power  

E-print Network

1 Poster presented at the OCEANS'11 Conference, September, 2011 Seeking Optimal Geometry of a Heaving Body for Improved Wave Power Absorption Efficiency Rachael Hager, Nelson Fernandez and Michelle H generated interest in wave energy. This project has been inspired by Salter's work to better understand wave

194

A regional comparison of particle size distributions and the power law approximation in oceanic and estuarine surface waters  

Microsoft Academic Search

The particle size distribution (PSD) is commonly used in studies of sediment fluxes, phytoplankton dynamics, and optical scattering from particulates, but little is known about the spatial and temporal variability of this parameter. Here, we analyze in situ laser diffraction measurements of the PSD from a variety of estuarine and open ocean systems. The power law or “Junge-type” distribution provided

C. J. Buonassissi; H. M. Dierssen

2010-01-01

195

Mitigation of environmental impact of power-plant discharge by use of Ocean Thermal Energy Conversion system  

Microsoft Academic Search

This study aims to evaluate the mitigation method of environmental impact of power-plant discharges by reducing the temperature difference between effluent and coastal water. To minimize excessive thermal pollution which could cause serious socio-economic problems, Ocean Thermal Energy Conversion (OTEC) system can be applied to control the resultant temperature of combined discharge as well as to produce electricity by reusing

Hyeon-Ju Kim; Ho-Saeng Lee; Seung-Won Lee; Dong-Ho Jung; Duck-Su Moon

2010-01-01

196

Autonomous renewable energy conversion system  

Microsoft Academic Search

This paper briefly reviews the need for renewable power generation and describes a medium-power Autonomous Renewable Energy Conversion System (ARECS), integrating conversion of wind and solar energy sources. The objectives of the paper are to extract maximum power from the proposed wind energy conversion scheme and to transfer this power and the power derived by the photovoltaic system in a

Ventzislav Valtchev; Alex Van den Bossche; Jozef Ghijselen; Jan Melkebeek

2000-01-01

197

Environmental Technology Verification Report - Electric Power and Heat Production Using Renewable Biogas at Patterson Farms  

EPA Science Inventory

The U.S. EPA operates the Environmental Technology Verification program to facilitate the deployment of innovative technologies through performance verification and information dissemination. A technology area of interest is distributed electrical power generation, particularly w...

198

Integration of Electric Energy Storage into Power Systems with Renewable Energy Resources  

E-print Network

include making the power systems more reliable and economically efficient. The rapid development of the large scale energy storage technology makes it an excellent candidate in achieving these goals. A novel Model Predictive Control (MPC)-based operation...

Xu, Yixing 1985-

2012-10-26

199

Potential impacts of electric power production utilizing natural gas, renewables and carbon capture and sequestration on US Freshwater resources.  

PubMed

Carbon capture and sequestration (CCS) has important implications relative to future thermoelectric water use. A bounding analysis is performed using past greenhouse gas emission policy proposals and assumes either all effected capacity retires (lower water use bound) or is retrofitted (upper bound). The analysis is performed in the context of recent trends in electric power generation expansion, namely high penetration of natural gas and renewables along with constrained cooling system options. Results indicate thermoelectric freshwater withdrawals nationwide could increase by roughly 1% or decrease by up to 60% relative to 2009 levels, while consumption could increase as much as 21% or decrease as much as 28%. To identify where changes in freshwater use might be problematic at a regional level, electric power production has been mapped onto watersheds with limited water availability (where consumption exceeds 70% of gauged streamflow). Results suggest that between 0.44 and 0.96 Mm(3)/d of new thermoelectric freshwater consumption could occur in watersheds with limited water availability, while power plant retirements in these watersheds could yield 0.90 to 1.0 Mm(3)/d of water savings. PMID:23789965

Tidwell, Vincent C; Malczynski, Leonard A; Kobos, Peter H; Klise, Geoffrey T; Shuster, Erik

2013-08-01

200

Ocean Engineering at UNH THE OCEAN ENGINEERING program at UNH provides students with hands-on  

E-print Network

Ocean Engineering at UNH THE OCEAN ENGINEERING program at UNH provides students with hands-on opportunities for research in ocean renewable energy, remotely operated vehicles, ocean mapping, ocean acoustics, and coastal processes. The Jere A. Chase Ocean Engineering Laboratory is equipped with state

Pringle, James "Jamie"

201

Ocean Microbial Fuel Cell: Power Source and Research Tool for Studying Marine Biogeochemistry  

NASA Astrophysics Data System (ADS)

Ocean microbial fuel cells (OMFCs) are devices capable of producing modest levels of electrical power. The cells are ultimately driven by the oxidation of marine organic matter at the anode and reduction of dissolved oxygen at the cathode, but microbial transformations and electrochemically active intermediates play important roles in the overall process of electricity generation. By separating the factors that affect the performance of OMFCs into components of an equivalent circuit and manipulating these factors in laboratory and field experiments, we are gaining new insight into how specific redox reactions, sources of organic matter, and mass transport at small and intermediate scales may enrich environments with certain groups of microorganisms that in turn regulate anaerobic organic matter degradation. This talk will illustrate these relationships with the results from at least four experiments in which either fresh plankton, or substrates within continental margin sediments, fuelled the OMFCs. In each example, reduced sulfur compounds were found to be major electron carriers to the fuel cell anode. These intermediates came from a variety of sources including sulfide generated from sulfate reduction in mixed solutions surrounding the electrode, sulfide generated distally but transported by pore-water diffusion and advection, iron monosulfides and pyrite present is a sediment matrix centimeters from the electrode, and sulfide or polysulfide produced within an electrode biofilm. To illustrate a practical application of an OMFC, we are currently constructing a benthic cell that will power a sonic receiver in a network of underwater sensors. The form of this OMFC resembles a benthic chamber with a footprint of one square meter. It should be capable of supplying electrical power and regulating its output for years to decades.

Reimers, C. E.; Girguis, P.; Westall, J. C.; Nielsen, M. E.

2007-05-01

202

Renewable Energy, Nuclear Power and Galileo: Do Scientists Have a Duty to Expose Popular Misconceptions?  

E-print Network

of unchecked fossil fuel use. Public awareness of the climate threat has increased. Yet growth of carbon cheap fossil fuels to power their economies. Governments recognize the climate threat, universally change. Yet governments continue to encourage the fossil fuel industry to extract almost every fossil

Hansen, James E.

203

Reliability Modeling and Simulation of Composite Power Systems with Renewable Energy Resources and Storage  

E-print Network

.C. Larsen Model ...................................................................... 9 2.2 Wind Turbine Output Power ................................................................ 10 2.3 Transition Rate Matrix Approach... ................................................................. 2 Figure 2 Schematic of N.O. Jensen Model .............................................................. 7 Figure 3 State Space of a Wind Turbine .................................................................. 13 Figure 4 Layout of a Wind...

Kim, Hagkwen

2013-05-24

204

Multi-objective operation management of a renewable MG (micro-grid) with back-up micro-turbine\\/fuel cell\\/battery hybrid power source  

Microsoft Academic Search

As a result of today’s rapid socioeconomic growth and environmental concerns, higher service reliability, better power quality, increased energy efficiency and energy independency, exploring alternative energy resources, especially the renewable ones, has become the fields of interest for many modern societies. In this regard, MG (Micro-Grid) which is comprised of various alternative energy sources can serve as a basic tool

Amjad Anvari Moghaddam; Alireza Seifi; Taher Niknam; Mohammad Reza Alizadeh Pahlavani

2011-01-01

205

Implications of renewable energy on total CO2 emissions in the power sector: The full-energy- chains analysis in Thailand  

Microsoft Academic Search

Under situation of high imported dependency and limited indigenous resources of primary fossil energy resources, the policy makers have to decide on selection of different power generation technologies to maintain the grid security. Consequently, the fuel mix has been changing over time, and a larger portion of renewable energy resources for electricity generation is currently introduced. In terms of indirect

Pawinee Suksuntornsiri; Bundit Limmeechokchai

206

Integration of the bio-ethanol process in a network of facilities for heat and power production from renewable sources using process simulation  

Microsoft Academic Search

The economic competitiveness of ethanol as a liquid fuel strongly depends on the amount of energy used during the production. To a sustainable production of fuel ethanol contributes also the use of energy from renewable sources. Process simulation is used to integrate a bio-ethanol plant in a network of facilities for heat and power production from residues of ethanol and

Walter Wukovits; Martin Pfeffer; Bettina Liebmann; Anton Friedl

2007-01-01

207

Renewable energy: Environment and development  

SciTech Connect

This hardcover is authored by India's secretary in the Ministry of Energy's Department of Non-Conventional Energy Sources. Part 1 deals with bio-energy, starting with a general presentation of energy from biomass and subsequently focusing on India's biogas technology program. Part 2 contains an exposition of direct uses of solar power and the related program in India. Finally, Part 3 elaborates on other forms of renewable energy technologies, such as wind, ocean, and geothermal energy. Generally, the presentation of each technology follows a more or less standard mode, containing a technical section, some form of financial analysis, and R D efforts in India. The material in this publication updates the already rich Indian literature and nicely complements a recent report released by the International Energy Agency covering the topic of renewable energy technologies. Given its content alone, however, the book would have been better represented by a slightly different title such as Renewable Energy Technologies and Programs in India. The author provides no explicit linkage to the literature on the modern topic of [open quotes]environment and development[close quotes] to warrant its inclusion in the title. That topic has recently captured the attention of both researchers and policy makers into identifying, unfolding, and adopting the idea of sustainable development.

Dayal, M.

1989-01-01

208

Renewable Energy Association  

NSDL National Science Digital Library

As the trade association for the UK bioenergy industry, British Biogen's mission is to promote and coordinate the commercial development of biomass as a renewable fuel resource for energy production. British Biogen has merged with the Renewable Power Association. By clicking on the Renewable Energy tab, users will find information on the different subject areas. REA adds new information based upon what we discover and updates these subject fields.

2007-06-11

209

Offshore Renewable Energy R&D (Fact Sheet)  

SciTech Connect

This fact sheet describes the offshore renewable energy R&D efforts at NREL's NWTC. As the United States increases its efforts to tap the domestic energy sources needed to diversify its energy portfolio and secure its energy supply, more attention is being focused on the rich renewable resources located offshore. Offshore renewable energy sources include offshore wind, waves, tidal currents, ocean and river currents, and ocean thermal gradients. According to a report published by the National Renewable Energy Laboratory (NREL) in 2010,1 U.S. offshore wind resources have a gross potential generating capacity four times greater than the nation's present electric capacity, and the Electric Power Research Institute estimates that the nation's ocean energy resources could ultimately supply at least 10% of its electric supply. For more than 30 years, NREL has advanced the science of renewable energy while building the capabilities to guide rapid deployment of commercial applications. Since 1993, NREL's National Wind Technology Center (NWTC) has been the nation's premier wind energy research facility, specializing in the advancement of wind technologies that range in size from a kilowatt to several megawatts. For more than 8 years, the NWTC has been an international leader in the field of offshore floating wind system analysis. Today, researchers at the NWTC are taking their decades of experience and extensive capabilities and applying them to help industry develop cost-effective hydrokinetic systems that convert the kinetic energy in water to provide power for our nation's heavily populated coastal regions. The center's capabilities and experience cover a wide spectrum of wind and water energy engineering disciplines, including atmospheric and ocean fluid mechanics, aerodynamics; aeroacoustics, hydrodynamics, structural dynamics, control systems, electrical systems, and testing.

Not Available

2011-10-01

210

High-power high-brightness solar laser approach for renewable Mg recovery from MgO  

NASA Astrophysics Data System (ADS)

Hydrogen and heat energy from the reaction of magnesium with water can be used for engines and fuel cells. However, at least 4000 K is necessary for magnesium oxide reduction. Ultra high brightness solar-pumped lasers become essential to make this renewable process technology efficient and economically competitive. 2.3 mg/kJ solar laser - induced magnesium production efficiency has been achieved by T. Yabe et al., in 2012, by focusing a 53 W solar laser beam on a mixture of MgO with Si as reducing agent. This result is however far from the 12.1 mg/kJ attained with 2 kW/mm2 CO2 laser beam. To improve substantially the solar laser - induced Mg production efficiency, a simple high-power, high brightness Nd:YAG solar laser pumping approach is proposed. The solar radiation is both collected and concentrated by four Fresnel lenses, and redirected towards a Nd:YAG laser head by four plane folding mirrors. A fused-silica secondary concentrator is used to compress the highly concentrated solar radiation to a laser rod. Optimum pumping conditions and laser resonator parameters are found through ZEMAXand LASCADnumerical analysis. High-record solar laser beam brightness figure of merit - defined as the ratio between laser power and the product of Mx 2 and My 2 - of 10.5 W is numerically achieved, being 5.5 times higher than the previous record and about 1600 times more than that of the most powerful Nd:YAG solar laser. 8340 W/mm2 is numerically achieved at its focal region, which can quadruple the magnesium production efficiency with clean energy.

Almeida, Joana; Liang, Dawei

2014-08-01

211

Landing Marine-derived Renewable Energy: Optimising Power Cable Routing in the Nearshore Environment  

NASA Astrophysics Data System (ADS)

Numerous studies have demonstrated that a vast unexploited source of energy can be derived from the marine environment. Recent evolution of the energy market and looming EU renewable energy uptake targets for 2020 have driven a huge explosion of interest in exploiting this resource, triggering both governments and industry to move forward in undertaking feasibility assessments and demonstration projects for wave, tidal and offshore wind farms across coastlines. The locations which naturally lend themselves to high yield energy capture, are by definition, exposed and may be remote, located far from the end user of the electricity generated. A fundamental constraint to successfully exploiting these resources will be whether electricity generated in high energy, variable and constantly evolving environments can be brought safely and reliably to shore without the need for constant monitoring and maintenance of the subsea cables and landfall sites. In the case of riverine cable crossings superficial sediments would typically be used to trench and bury the cable. High energy coastal environments may be stripped of soft sediments. Any superficial sediments present at the site may be highly mobile and subject to re-suspension throughout the tidal cycle or under stormy conditions. EirGrid Plc. and Mott MacDonald Ireland Ltd. have been investigating the potential for routing a cable across the exposed Shannon estuary in Ireland. Information regarding the geological ground model, meteo-oceanographic and archaeological conditions of the proposed site was limited, necessitating a clear investigation strategy. The investigation included gathering site information on currents, bathymetry and geology through desk studies, hydrographic and geophysical surveys, an intrusive ground investigation and coastal erosion assessments at the landfall sites. The study identified a number of difficulties for trenching and protecting a cable through an exposed environment such as the Shannon estuary. Such difficulties include limited availability of superficial sediments for cable trenching and protection; where sediments were present there were indications that the sediments were either mobile sands, or difficult to trench glacial tills. Areas of the estuary feature steep side slopes and rocky outcrops, which also provide a challenge for cable installation and long-term protection. Difficult ground conditions were set against an aggressive meteo-oceanographic environment, tidal currents reached 5-7 knots on the ebb tide with reverse eddies around the landfalls coupled with an active wave climate. These conditions pose implications on the working time, installation vessels and methodology. The estuary is also a designated Special Area of Conservation for the protection of bottlenose dolphins, therefore, the cable installation methodology needed to consider ecological sensitivities. Additionally, an area near to the southern landfall has historically been an area of strategic significance and has a number of fortifications adding archaeological constraints for the cable route. The increasing need and importance of investigation and planning for submarine cable routes will be discussed alongside potential methods for installation in the aggressive nearshore environment, this paper will summarise findings and observations of working in a high energy environment, will consider options for installation and protection of cables, will discuss the key lessons learned and look at potential implications for offshore electricity generation.

Turner, Rosalind, ,, Dr.; Keane, Tom; Mullins, Brian; Phipps, Peter

2010-05-01

212

Energy Efficiency and Renewable Energy (EERE)  

NSDL National Science Digital Library

This U.S. Department of Energy site provides access to more than 600 links and 80,000 documents about renewable energy and energy efficient technologies, including such topics as: bioenergy, hydrogen, power from the oceans, and wind, solar, geothermal, and hydroenergy. Specialized resources include a collection of links to educational and training resources on energy, and a weekly newsletter covering news and events, new sites on EREN, and energy facts and tips. A consumer section offers advice on energy conservation and home weatherization.

2002-03-04

213

Can loss of balance from mesoscale eddies adequately power deep ocean mixing?  

NASA Astrophysics Data System (ADS)

The global ocean thermohaline circulation is partly composed of the sinking of dense surface waters at high latitudes. But in order to close the circulation and maintain the abyssal stratification, the dense waters must rise up again through vertical mixing. This process requires a source of energy roughly estimated to be 2 TW. Previous work has concluded that tides and winds may adequately supply the required power, but the conceivable role of loss of balance from mesoscale eddies, resulting in the generation of internal inertia-gravity waves and associated vertical mixing, has hitherto been considered to be 'of unknown importance' (Wunsch and Ferrari, 2004). We investigate the potential role of loss of balance, by studying the generation of internal inertia-gravity waves by balanced flow in a rotating two-layer annulus laboratory experiment (Williams et al., 2008). A photograph from the experiment is shown in the figure. As the Rossby number of the balanced flow decreases, the amplitude of the emitted inertia-gravity waves also decreases, but much less rapidly than is predicted by several dynamical theories. This finding suggests that inertia-gravity waves might be far more energised than previously thought. The balanced flow leaks roughly one per cent of its energy each rotation period into internal inertia-gravity waves at the peak of their generation. Crude extrapolation of this result to the global ocean suggests that the flux of energy from mesoscale eddies into internal waves may be as large as 1.5 TW. We claim no accuracy for this figure which is only indicative. Nevertheless, we are persuaded that generation of inertia-gravity waves from the balanced mesoscale flow may be an important source of energy for deep interior mixing, and deserves further study. Reference Williams, PD, Haine, TWN and Read, PL (2008) Inertia-Gravity Waves Emitted from Balanced Flow: Observations, Properties, and Consequences. Journal of the Atmospheric Sciences, 65(11), pp 3543-3556. doi:10.1175/2008JAS2480.1 Photograph showing internal inertia-gravity waves generated by loss of balance from the large-scale flow in a rotating two-layer annulus experiment in the laboratory.

Williams, P. D.; Haine, T. W.; Read, P. L.

2009-12-01

214

Renewable energy: Sources for fuels and electricity  

Microsoft Academic Search

This book assesses the technical and economic prospects for making fuels and electricity from renewable energy sources. Twenty-three chapters discuss the following renewable technologies: hydropower; wind energy; solar thermal electric technology; photovoltaic technology (6 chapters); ocean energy systems; geothermal energy; biomass conversion technology (8 chapters); solar hydrogen; and utility strategies for using renewables. All chapters have been processed for inclusion

T. B. Johansson; H. Kelly; A. K. N. Reddy; R. H. Williams

1993-01-01

215

Renewable Energy Technology  

ERIC Educational Resources Information Center

In many ways the field of renewable energy technology is being introduced to a society that has little knowledge or background with anything beyond traditional exhaustible forms of energy and power. Dotson (2009) noted that the real challenge is to inform and educate the citizenry of the renewable energy potential through the development of…

Daugherty, Michael K.; Carter, Vinson R.

2010-01-01

216

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a Power Systems Engineering Research Center webinar on September 4, 2012.

Mai, T.

2012-08-01

217

1. Department, Course Number, Title ORE 677, Marine Renewable Energy  

E-print Network

1. Department, Course Number, Title ORE 677, Marine Renewable Energy 2. Designation as a Required. Renewable Energy from the Ocean ­ a Guide to OTEC, W.H. Avery and C. Wu, Oxford University Press, 1994. 2 and tidal resources. 3. An understanding of the role of ocean renewable energy within the current worldwide

Frandsen, Jannette B.

218

Feasibility Study of Biopower in East Helena, Montana. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA) developed the RE-Powering America's Land initiative to reuse contaminated sites for renewable energy generation when aligned with the community's vision for the site. The former American Smelting and Refining Company (Asarco) smelter in East Helena, Montana, was selected for a feasibility study under the initiative. Biomass was chosen as the renewable energy resource based on the wood products industry in the area. Biopower was selected as the technology based on Montana's renewable portfolio standard (RPS) requiring utilities to purchase renewable power.

Moriarty, K.

2013-02-01

219

California Energy Commission: Ocean Energy  

NSDL National Science Digital Library

This California Energy Commission website discusses how electrical power can be generated from tidal power, wave power, ocean thermal energy conversion, ocean currents, ocean winds, salinity gradients, and other ocean phenomena. Users can learn how different areas of the ocean vary in their potential energy production. The site presents the history of ocean energy production and the issues associated with permitting an ocean wave-energy conversion facility. Users can find links to ocean energy education and to companies and research groups involved with ocean energy development.

220

Programs in Renewable Energy  

SciTech Connect

Our nation faces significant challenges as we enter the 1990s: securing a reliable supply of competitively priced energy, improving the quality of our environment, and increasing our share of foreign markets for goods and services. The US Department of Energy's (DOE) Programs in Renewable Energy are working toward meeting these challenges by developing the technologies that make use of our nation's largest energy resource: renewable energy. The sunlight, wind biomass, flowing water, ocean energy, and geothermal energy that make up the renewable energy resource can be found throughout our nation. These resources can provide all the forms of energy our nation needs: liquid fuels, electricity, and heating and cooling. Renewable energy meets about 10% of our need for these forms of energy today, yet the potential contribution is many times greater. DOE's Programs in Renewable Energy are working side-by-side with American industry to develop the technologies that convert renewable energy resources into practical, cost-competitive energy. After a decade of progress in research, several of these technologies are poised to make large contributions during the 1990s and beyond. This booklet provides an overview of the renewable energy programs and their plans for FY 1990. Sources of additional information are listed at the back of the booklet. 48 figs., 4 tabs.

Not Available

1990-01-01

221

Greenhouse gas and air pollutant emission reduction potentials of renewable energy - case studies on photovoltaic and wind power introduction considering interactions among technologies in Taiwan  

SciTech Connect

To achieve higher energy security and lower emission of greenhouse gases (GHGs) and pollutants, the development of renewable energy has attracted much attention in Taiwan. In addition to its contribution to the enhancement of reliable indigenous resources, the introduction of renewable energy such as photovoltaic (PV) and wind power systems reduces the emission of GHGs and air pollutants by substituting a part of the carbon- and pollutant-intensive power with power generated by methods that are cleaner and less carbon-intensive. To evaluate the reduction potentials, consequential changes in the operation of different types of existing power plants have to be taken into account. In this study, a linear mathematical programming model is constructed to simulate a power mix for a given power demand in a power market sharing a cost-minimization objective. By applying the model, the emission reduction potentials of capacity extension case studies, including the enhancement of PV and wind power introduction at different scales, were assessed. In particular, the consequences of power mix changes in carbon dioxide, nitrogen oxides, sulfur oxides, and particulates were discussed. Seasonally varying power demand levels, solar irradiation, and wind strength were taken into account. In this study, we have found that the synergetic reduction of carbon dioxide emission induced by PV and wind power introduction occurs under a certain level of additional installed capacity. Investigation of a greater variety of case studies on scenario development with emerging power sources becomes possible by applying the model developed in this study. 15 refs., 8 figs., 11 tabs.

Yu-Ming Kuo; Yasuhiro Fukushima [National Cheng Kung University, Tainan City (Taiwan). Department of Environmental Engineering

2009-03-15

222

Energy Efficiency & Renewable Energy  

E-print Network

.S. Department of Energy #12;Renewable Energy Solar Biomass/Biofuels Hydrogen/Fuel Cells Wind/ Water Power: Fuel cells can be powered by emissions-free fuels that are produced from clean, domestic resources Generation DLA: Fuel Cell Material Handling Equipment, Solar Power, and H2ICE shuttle buses Fuel Cell

223

Innovative Power-Augmentation-Guide-Vane Design of Wind-Solar Hybrid Renewable Energy Harvester for Urban High Rise Application  

NASA Astrophysics Data System (ADS)

To generate greater quantities of energy from wind, the most efficient solution would be by increasing the wind speed. Also, due to the decreasing number of economic wind energy sites, there are plans to place wind turbines closer to populated areas. To site wind turbines out from rural areas, the current problems of wind turbines need to be resolved, especially visual impact, poor starting behaviour in low wind speeds, noise and danger caused by blade failure. In this paper, a patented wind-solar hybrid renewable energy harvester is introduced. It is a compact system that integrates and optimizes several green elements and can be built on the top (or between upper levels) of high rise buildings or structures. This system can be used in remote and urban areas, particularly at locations where the wind speed is lower and more turbulent. It overcomes the inferior aspect on the low wind speed by guiding and increasing the speed of the high altitude free-stream wind through fixed or yaw-able power-augmentation-guide-vane (PAGV) before entering the wind turbine (straight-bladed vertical axis wind turbine, VAWT in this project) at center portion. PAGV is a new and innovative design where its appearance or outer design can be blended into the building architecture without negative visual impact. From the studies, it is shown that the wind speed increment in the PAGV can be produced according to the Bernoulli's principle. Computational fluid dynamics (CFD) simulation is used to optimize the geometry of the PAGV and the simulation results demonstrated the technical possibility of this innovative concept. The PAGV replaces the free air-stream from wind by multiple channels of speed-increased and directional-controlled air-stream. With the PAGV, this lift-type VAWT can be self-started and its size can be reduced for a given power output. The design is also safer since the VAWT is enclosed by the PAGV. By integrating the PAGV with the VAWT (the diameter and height of PAGV are 2 times larger than the VAWT's), the predicted power generated (at free-stream wind speed = 3.5 m/s) is 1.25 times higher than the VAWT that has the same size as the PAGV. This new wind energy generation configuration should generate interest in the international market, even for regions with weaker winds. The correlation between CFD simulation and wind tunnel test will be carried out and reported elsewhere.

Tong, Chong Wen; Zainon, M. Z.; Chew, Poh Sin; Kui, Soo Chun; Keong, Wee Seng; Chen, Pan Kok

2010-06-01

224

A survey of potential users of the High Altitude Powered Platform (HAPP) in the ocean/coastal zone community  

NASA Technical Reports Server (NTRS)

The results of a survey of the ocean/coastal zone community to determine potential applications of a High Altitude Powered Platform (HAPP) are reported. Such a platform, capable of stationkeeping for periods up to a year over a given location, could make frequent and repeated high resolution observations over a given region or serve as a high-altitude regional communications link. Users were surveyed in person and via a questionnaire to determine the desirability of the HAPP within the ocean/coastal zone community. The results of the survey indicated that there is strong interest in all areas of the user community (research and development, operational agencies, and private industry) in having NASA develop the HAPP.

Escoe, D.; Rigternik, P.

1979-01-01

225

Project Status: Hawai'i National Marine Renewable Energy Center  

E-print Network

Project Status: Hawai'i National Marine Renewable Energy Center Task 2: Test Site Development (2 Exchangers Test Facility Makai Ocean Engineering, Inc. www.makai.com #12;3 OTEC benefits: Large Renewable

226

Arctic ocean research: progress and requirements  

Microsoft Academic Search

The last 20 years have seen renewed interest in research in the Arctic. This research has shown us that the Arctic Ocean is a vital part of the world ocean-climate system with a profound influence on the \\

2002-01-01

227

OCEAN WAVES, MECHANICAL IMPULSES AND ELECTRICAL ENERGY: CONCEPT OF A SIMPLE CONVERSION PROCESS  

Microsoft Academic Search

Estimates suggest that a meter of a wave front carries ~ 100 kW of power. A significant amount of renewable energy is hence dissipated across the time scale of minutes as surface gravity waves dissipate on any beach. Given that the majority of the world population lives near the ocean, it makes sense to explore new technologies associated with the

Surajit Sen; Adam Sokolow; Robert Paul Simion; Diankang Sun; Robert L. Doney; Masami Nakagawa; Juan H. Agui

2007-01-01

228

Low head tidal power: a major source of energy from the worlds oceans  

Microsoft Academic Search

There are a large number of tidal sites in the world's oceans which can provide a significant, viable and cost effective source of reliable energy. Many are strategically located close to populated areas where they can be economically harnessed using an ecologically benign low-head technology developed by Nova Energy Ltd. Early work was carried out under research contracts with the

Barry V. Davis

1997-01-01

229

Project NEPTUNE: an innovative, powered, fibre-optic cabled deep ocean observatory spanning the Juan de Fuca plate, NE Pacific  

NASA Astrophysics Data System (ADS)

NEPTUNE is an innovative facility, a deep-water cabled observatory, that will transform marine science. MARS and VENUS are deep and shallow-water test bed facilities for NEPTUNE located in Monterey Canyon, California and in southern British Columbia, respectively; both were funded in 2002. NEPTUNE will be a network of over 30 subsea observatories covering the 200,000 sq. km Juan de Fuca tectonic plate, Northeast Pacific. It will draw power via two shore stations and receive and exchange data with scientists through 3000 km of submarine fiber-optic cables. Each observatory, and cabled extensions, will host and power many scientific instruments on the surrounding seafloor, in seafloor boreholes and buoyed through the water column. Remotely operated and autonomous vehicles will reside at depth, recharge at observatories, and respond to distant labs. Continuous near-real-time multidisciplinary measurement series will extend over 30 years. Free from the limitations of battery life, ship schedules/ accommodations, bad weather and delayed access to data, scientists will monitor remotely their deep-sea experiments in real time on the Internet, and routinely command instruments to respond to storms, plankton blooms, earthquakes, eruptions, slope slides and other events. Scientists will be able to pose entirely new sets of questions and experiments to understand complex, interacting Earth System processes such as the structure and seismic behavior of the ocean crust; dynamics of hot and cold fluids and gas hydrates in the upper ocean crust and overlying sediments; ocean climate change and its effect on the ocean biota at all depths; and the barely known deep-sea ecosystem dynamics and biodiversity. NEPTUNE is a US/Canada (70/30) partnership to design, test, build and operate the network on behalf of a wide scientific community. The total cost of the project is estimated at about U.S. 250 million from concept to operation. Over U.S. 50 million has already been funded for design, development, and the test beds. NEPTUNE will be among the first of many such cabled ocean observatories. Much is to be gained by being among the scientific and industrial pioneers. The multidisciplinary data archive will be an amazing, expanding resource for scientists and students. The public will share in the research discoveries of one of the last unexplored places on earth through an extensive education/outreach program.

Barnes, C.; Delaney, J.

2003-04-01

230

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Downscaling Solar Power  

E-print Network

and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Downscaling Solar Power Output to 4-Seconds for Use in Integration Studies Marissa Hummon 3rd International Solar Power Integration Workshop integration studies require solar power data with high spatial and temporal accuracy to quantify the impact

231

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Modelling Concentrating Solar Power  

E-print Network

and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Modelling Concentrating Solar Power with Thermal Energy Storage for Integration Studies Marissa Hummon 3rd International Solar Power Integration the three main components of the plant: solar field, storage tank, and power block. We show the effect

232

Modeling, control, and simulation of battery storage photovoltaic-wave energy hybrid renewable power generation systems for island electrification in Malaysia.  

PubMed

Today, the whole world faces a great challenge to overcome the environmental problems related to global energy production. Most of the islands throughout the world depend on fossil fuel importation with respect to energy production. Recent development and research on green energy sources can assure sustainable power supply for the islands. But unpredictable nature and high dependency on weather conditions are the main limitations of renewable energy sources. To overcome this drawback, different renewable sources and converters need to be integrated with each other. This paper proposes a standalone hybrid photovoltaic- (PV-) wave energy conversion system with energy storage. In the proposed hybrid system, control of the bidirectional buck-boost DC-DC converter (BBDC) is used to maintain the constant dc-link voltage. It also accumulates the excess hybrid power in the battery bank and supplies this power to the system load during the shortage of hybrid power. A three-phase complex vector control scheme voltage source inverter (VSI) is used to control the load side voltage in terms of the frequency and voltage amplitude. Based on the simulation results obtained from Matlab/Simulink, it has been found that the overall hybrid framework is capable of working under the variable weather and load conditions. PMID:24892049

Samrat, Nahidul Hoque; Bin Ahmad, Norhafizan; Choudhury, Imtiaz Ahmed; Bin Taha, Zahari

2014-01-01

233

Modeling, Control, and Simulation of Battery Storage Photovoltaic-Wave Energy Hybrid Renewable Power Generation Systems for Island Electrification in Malaysia  

PubMed Central

Today, the whole world faces a great challenge to overcome the environmental problems related to global energy production. Most of the islands throughout the world depend on fossil fuel importation with respect to energy production. Recent development and research on green energy sources can assure sustainable power supply for the islands. But unpredictable nature and high dependency on weather conditions are the main limitations of renewable energy sources. To overcome this drawback, different renewable sources and converters need to be integrated with each other. This paper proposes a standalone hybrid photovoltaic- (PV-) wave energy conversion system with energy storage. In the proposed hybrid system, control of the bidirectional buck-boost DC-DC converter (BBDC) is used to maintain the constant dc-link voltage. It also accumulates the excess hybrid power in the battery bank and supplies this power to the system load during the shortage of hybrid power. A three-phase complex vector control scheme voltage source inverter (VSI) is used to control the load side voltage in terms of the frequency and voltage amplitude. Based on the simulation results obtained from Matlab/Simulink, it has been found that the overall hybrid framework is capable of working under the variable weather and load conditions. PMID:24892049

Samrat, Nahidul Hoque; Ahmad, Norhafizan Bin; Choudhury, Imtiaz Ahmed; Taha, Zahari Bin

2014-01-01

234

Learning about Renewable Energy.  

ERIC Educational Resources Information Center

This booklet provides an introduction to renewable energy, discussing: (1) the production of electricity from sunlight; (2) wind power; (3) hydroelectric power; (4) geothermal energy; and (5) biomass. Also provided are nine questions to answer (based on the readings), four additional questions to answer (which require additional information), and…

Conservation and Renewable Energy Inquiry and Referral Service (DOE), Silver Spring, MD.

235

Renewal Processes  

NSDL National Science Digital Library

Created by Kyle Siegrist of the University of Alabama-Huntsville, this is an online, interactive lesson on the renewal processes. The resource provides examples, exercises, and applets which include renewal equations and renewal limit theorems. This is the fifteenth of seventeen different statistics lessons presented by Siegrist. This site is broken up much like an online textbook. Each lesson is separable, but together, they form a cohesive look at different aspects of statistics.

Siegrist, Kyle

236

Modeling of hybrid renewable energy systems  

Microsoft Academic Search

Hybrid renewable energy systems (HRES) are becoming popular for remote area power generation applications due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. Economic aspects of these technologies are sufficiently promising to include them in developing power generation capacity for developing countries. Research and development efforts in solar, wind, and other renewable energy technologies

M. K. Deshmukh; S. S. Deshmukh

2008-01-01

237

Stochastic resource auctions for renewable energy integration  

Microsoft Academic Search

Among the many challenges of integrating renewable energy sources into the the existing grid, is the challenge of integrating renewable energy generators into the power systems economy. Electric markets currently are run in a way that participating generators must supply contracted amounts. And yet, renewable energy generators such as wind power generators cannot supply contracted amounts with certainty. Thus, alternative

Wenyuan Tang; Rahul Jain

2011-01-01

238

Future projection of radiocesium flux to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant  

PubMed Central

Following the initial fall out from Fukushima Dai-ichi Nuclear Power Plant (FDNPP), a significant amount of radiocesium has been discharged from Abukuma River into the Pacific Ocean. This study attempted to numerically simulate the flux of radiocesium into Abukuma River by developing the multiple compartment model which incorporate the transport process of the radionuclide from the ground surface of the catchment area into the river, a process called wash off. The results from the model show that the sub-basins with a high percentage of forest area release the radionuclides at lower rate compared to the other sub-basins. In addition the results show that the model could predict the seasonal pattern of the observed data. Despite the overestimation observed between the modeled data and the observed data, the values of R2 obtained from 137Cs and 134Cs of 0.98 and 0.97 respectively demonstrate the accuracy of the model. Prediction of the discharge from the basin area for 100 years after the accident shows that, the flux of radiocesium into the Pacific Ocean is still relatively high with an order of magnitude of 109?bq.month?1 while the total accumulation of the discharge is 111?TBq for 137Cs and 44?TBq for 134Cs. PMID:25673214

Adhiraga Pratama, Mochamad; Yoneda, Minoru; Shimada, Yoko; Matsui, Yasuto; Yamashiki, Yosuke

2015-01-01

239

Future projection of radiocesium flux to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant.  

PubMed

Following the initial fall out from Fukushima Dai-ichi Nuclear Power Plant (FDNPP), a significant amount of radiocesium has been discharged from Abukuma River into the Pacific Ocean. This study attempted to numerically simulate the flux of radiocesium into Abukuma River by developing the multiple compartment model which incorporate the transport process of the radionuclide from the ground surface of the catchment area into the river, a process called wash off. The results from the model show that the sub-basins with a high percentage of forest area release the radionuclides at lower rate compared to the other sub-basins. In addition the results show that the model could predict the seasonal pattern of the observed data. Despite the overestimation observed between the modeled data and the observed data, the values of R(2) obtained from (137)Cs and (134)Cs of 0.98 and 0.97 respectively demonstrate the accuracy of the model. Prediction of the discharge from the basin area for 100 years after the accident shows that, the flux of radiocesium into the Pacific Ocean is still relatively high with an order of magnitude of 10(9)?bq.month(-1) while the total accumulation of the discharge is 111?TBq for (137)Cs and 44?TBq for (134)Cs. PMID:25673214

Adhiraga Pratama, Mochamad; Yoneda, Minoru; Shimada, Yoko; Matsui, Yasuto; Yamashiki, Yosuke

2015-01-01

240

77 FR 50489 - Office of Energy Efficiency and Renewable Energy  

Federal Register 2010, 2011, 2012, 2013

...Office of Energy Efficiency and Renewable Energy Wind and Water Power Program...Office of Energy Efficiency and Renewable Energy, Department of Energy. ACTION...into our nation's grid. Some renewable energy resources, such as wind...

2012-08-21

241

Radium-based estimates of cesium isotope transport and total direct ocean discharges from the Fukushima Nuclear Power Plant accident  

NASA Astrophysics Data System (ADS)

Radium has four naturally occurring isotopes that have proven useful in constraining water mass source, age, and mixing rates in the coastal and open ocean. In this study, we used radium isotopes to determine the fate and flux of runoff-derived cesium from the Fukushima Dai-ichi Nuclear Power Plant (FNPP). During a June 2011 cruise, the highest cesium (Cs) concentrations were found along the eastern shelf of northern Japan, from Fukushima south, to the edge of the Kuroshio Current, and in an eddy ~ 130 km from the FNPP site. Locations with the highest cesium also had some of the highest radium activities, suggesting much of the direct ocean discharges of Cs remained in the coastal zone 2-3 months after the accident. We used a short-lived Ra isotope (223Ra, t1/2 = 11.4 d) to derive an average water mass age (Tr) in the coastal zone of 32 days. To ground-truth the Ra age model, we conducted a direct, station-by-station comparison of water mass ages with a numerical oceanographic model and found them to be in excellent agreement (model avg. Tr = 27 days). From these independent Tr values and the inventory of Cs within the water column at the time of our cruise, we were able to calculate an offshore 134Cs flux of 3.9-4.6 × 1013 Bq d-1. Radium-228 (t1/2 = 5.75 yr) was used to derive a vertical eddy diffusivity (Kz) of 0.7 m2 d-1 (0.1 cm2 s-1); from this Kz and 134Cs inventory, we estimated a 134Cs flux across the pycnocline of 1.8 × 104 Bq d-1 for the same time period. On average, our results show that horizontal mixing loss of Cs from the coastal zone was ~ 109 greater than vertical exchange below the surface mixed layer. Finally, a mixing/dilution model that utilized our Ra-based and oceanographic model water mass ages produced a direct ocean discharge of 134Cs from the FNPP of 11-16 PBq at the time of the peak release in early April 2011. Our results can be used to calculate discharge of other water-soluble radionuclides that were released to the ocean directly from the Fukushima NPP.

Charette, M. A.; Breier, C. F.; Henderson, P. B.; Pike, S. M.; Rypina, I. I.; Jayne, S. R.; Buesseler, K. O.

2013-03-01

242

Renewable Energy  

NSDL National Science Digital Library

In this lesson, students are introduced to the five types of renewable energy resources by engaging in various activities to help them understand the transformation of energy (solar, water and wind) into electricity. Students explore the different roles engineers who work in renewable energy fields have in creating a sustainable environment â an environment that contributes to greater health, happiness and safety.

Integrated Teaching And Learning Program

243

Architectures and circuits for low-voltage energy conversion and applications in renewable energy and power management  

E-print Network

In this thesis we seek to develop smaller, less expensive, and more efficient power electronics. We also investigate emerging applications where the proper implementation of these new types of power converters can have a ...

Pilawa-Podgurski, Robert C. N

2012-01-01

244

10 CFR Appendix B to Subpart A of... - Environmental Effect of Renewing the Operating License of a Nuclear Power Plant  

...change in employment at the licensee's plant, value of the power plant, payments on energy production, and PILOT payments expected during the...would not be affected by continued power plant operations. Population and housing...

2014-01-01

245

Vehicle-to-grid power implementation: From stabilizing the grid to supporting large-scale renewable energy  

Microsoft Academic Search

Vehicle-to-grid power (V2G) uses electric-drive vehicles (battery, fuel cell, or hybrid) to provide power for specific electric markets. This article examines the systems and processes needed to tap energy in vehicles and implement V2G. It quantitatively compares today's light vehicle fleet with the electric power system. The vehicle fleet has 20 times the power capacity, less than one-tenth the utilization,

Willett Kempton; Jasna Tomi?

2005-01-01

246

Ocean Thermal Energy Conversion (OTEC): Ocean Engineering Technology Development  

Microsoft Academic Search

Ocean Thermal Energy Conversion (OTEC) is the principal ocean energy source under development in the U.S. because of its potential, state of development, and availability and access of the resource to the U.S. The major features of OTEC are that the source is renewable with minimum impact on the environment and the constant availability of the resource enhances OTEC acceptability

J. Giannotti; J. Vadus

1981-01-01

247

Highly robust thin-film composite pressure retarded osmosis (PRO) hollow fiber membranes with high power densities for renewable salinity-gradient energy generation.  

PubMed

The practical application of pressure retarded osmosis (PRO) technology for renewable blue energy (i.e., osmotic power generation) from salinity gradient is being hindered by the absence of effective membranes. Compared to flat-sheet membranes, membranes with a hollow fiber configuration are of great interest due to their high packing density and spacer-free module fabrication. However, the development of PRO hollow fiber membranes is still in its infancy. This study aims to open up new perspectives and design strategies to molecularly construct highly robust thin film composite (TFC) PRO hollow fiber membranes with high power densities. The newly developed TFC PRO membranes consist of a selective polyamide skin formed on the lumen side of well-constructed Matrimid hollow fiber supports via interfacial polymerization. For the first time, laboratory PRO power generation tests demonstrate that the newly developed PRO hollow fiber membranes can withstand trans-membrane pressures up to 16 bar and exhibit a peak power density as high as 14 W/m(2) using seawater brine (1.0 M NaCl) as the draw solution and deionized water as the feed. We believe that the developed TFC PRO hollow fiber membranes have great potential for osmotic power harvesting. PMID:23772898

Han, Gang; Wang, Peng; Chung, Tai-Shung

2013-07-16

248

Estimated global ocean wind power potential from QuikSCAT observations, accounting for turbine characteristics and siting  

E-print Network

third version of global ocean? surface heat flux product wasversion of global ocean?surface heat flux products releasedglobal flux datasets from the objectively analyzed air?sea fluxes (OAFlux) project: Latent and sensible heat fluxes,

Capps, Scott B; Zender, Charles S

2010-01-01

249

Open-cycle Ocean Thermal Energy Conversion (OTEC): Status and potential  

NASA Astrophysics Data System (ADS)

Tropical oceans with a 20 C or more temperature difference between surface and deep water represent a vast resource of renewable thermal energy. One of the methods of harnessing this resource is an open-cycle Ocean Thermal Energy Conversion (OTEC) system utilizing steam evaporated from the surface water for powering the turbine. In this paper, the state of the art of research and component development, as related to heat and mass transfer processes, power production, noncondensable gas handling, and seawater flow hydraulics, are described through an illustrated preliminary design study of a 1-MW facility.

Bharathan, D.

1984-08-01

250

Conceptual design of an Open-Cycle Ocean Thermal Energy Conversion Net Power-Producing Experiment (OC-OTEC NPPE)  

NASA Astrophysics Data System (ADS)

This report describes the conceptual design of an experiment to investigate heat and mass transfer and to assess the viability of open-cycle ocean thermal energy conversion (OC-OTEC). The experiment will be developed in two stages, the Heat- and Mass-Transfer Experimental Apparatus (HMTEA) and the Net Power-Producing Experiment (NPPE). The goal for the HMTEA is to test heat exchangers. The goal for the NPPE is to experimentally verify OC-OTEC's feasibility by installing a turbine and testing the power-generating system. The design effort met the goals of both the HMTEA and the NPPE, and duplication of hardware was minimal. The choices made for the design resource water flow rates are consistent with the availability of cold and warm seawater as a result of the seawater systems upgrade carried out by the U.S. Department of Energy (DOE), the state of Hawaii, and the Pacific International Center for High Technology Research. The choices regarding configuration of the system were made based on projected performance, degree of technical risk, schedule, and cost. The cost for the future phase of the design and the development of the HMTEA/NPPE is consistent with the projected future program funding levels. The HMTEA and NPPE were designed cooperatively by PICHTR, Argonne National Laboratory, and Solar Energy Research Institute under the guidance of DOE. The experiment will be located at the DOE's Seacoast Test Facility at the Natural Energy Laboratory of Hawaii, Kailua-Kona, Hawaii.

Bharathan, D.; Green, H. J.; Link, H. F.; Parsons, B. K.; Parsons, J. M.; Zangrando, F.

1990-07-01

251

Wave Power Demonstration Project at Reedsport, Oregon  

SciTech Connect

Ocean wave power can be a significant source of large?scale, renewable energy for the US electrical grid. The Electrical Power Research Institute (EPRI) conservatively estimated that 20% of all US electricity could be generated by wave energy. Ocean Power Technologies, Inc. (OPT), with funding from private sources and the US Navy, developed the PowerBuoy? to generate renewable energy from the readily available power in ocean waves. OPT's PowerBuoy converts the energy in ocean waves to electricity using the rise and fall of waves to move the buoy up and down (mechanical stroking) which drives an electric generator. This electricity is then conditioned and transmitted ashore as high?voltage power via underwater cable. OPT's wave power generation system includes sophisticated techniques to automatically tune the system for efficient conversion of random wave energy into low cost green electricity, for disconnecting the system in large waves for hardware safety and protection, and for automatically restoring operation when wave conditions normalize. As the first utility scale wave power project in the US, the Wave Power Demonstration Project at Reedsport, OR, will consist of 10 PowerBuoys located 2.5 miles off the coast. This U.S. Department of Energy Grant funding along with funding from PNGC Power, an Oregon?based electric power cooperative, was utilized for the design completion, fabrication, assembly and factory testing of the first PowerBuoy for the Reedsport project. At this time, the design and fabrication of this first PowerBuoy and factory testing of the power take?off subsystem are complete; additionally the power take?off subsystem has been successfully integrated into the spar.

Mekhiche, Mike [Principal Investigator] [Principal Investigator; Downie, Bruce [Project Manager] [Project Manager

2013-10-21

252

Feasibility Study of Economics and Performance of Biomass Power Generation at the Former Farmland Industries Site in Lawrence, Kansas. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

Under the RE-Powering America's Land initiative, the U.S. Environmental Protection Agency (EPA) provided funding to the National Renewable Energy Laboratory (NREL) to support a feasibility study of biomass renewable energy generation at the former Farmland Industries site in Lawrence, Kansas. Feasibility assessment team members conducted a site assessment to gather information integral to this feasibility study. Information such as biomass resources, transmission availability, on-site uses for heat and power, community acceptance, and ground conditions were considered.

Tomberlin, G.; Mosey, G.

2013-03-01

253

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at Wind Powering America States Summit. The Summit, which follows the American Wind Energy Association's (AWEA's) annual WINDPOWER Conference and Exhibition, provides state Wind Working Groups, state energy officials, U.S. Energy Department and national laboratory representatives, and professional and institutional partners an opportunity to review successes, opportunities, and challenges for wind energy and plan future collaboration.

DeMeo, E.

2012-08-01

254

77 FR 76512 - Renewal of Agency Information Collection for Electric Service Data for the Operation of Power...  

Federal Register 2010, 2011, 2012, 2013

...Number 1076-0021. This information collection expires December...submit comments on the information collection to the Desk...and Power, Office of Trust Services, Mail Stop 4655...gov. FOR FURTHER INFORMATION CONTACT: Yulan...

2012-12-28

255

Abstract--Since the renewable energy is popularly applied in power industry, especially the smart grid is fast developing all  

E-print Network

the smart grid is fast developing all over the world during these years, the reliable connection between' participation in the market, aggregation of distributed generation into virtual power plants, distribution

Chen, Zhe

256

THORs Power Method for Hydrokinetic Devices - Final Report  

SciTech Connect

Ocean current energy represents a vast untapped source of renewable energy that exists on the outer continental shelf areas of the 5 major continents. Ocean currents are unidirectional in nature and are perpetuated by thermal and salinity sea gradients, as well as coriolis forces imparted from the earth's rotation. This report details THORs Power Method, a breakthrough power control method that can provide dramatic increases to the capacity factor over and above existing marine hydrokinetic (MHK) devices employed in the extraction of energy from ocean currents. THORs Power Method represents a constant speed, variable depth operational method that continually locates the ocean current turbine at a depth at which the rated power of the generator is routinely achieved. Variable depth operation is achieved by using various vertical force effectors, including ballast tanks for variable weight, a hydrodynamic wing for variable lift or down force and drag flaps for variable vehicle drag forces.

J. Turner Hunt; Joel Rumker

2012-08-08

257

Renewable Energy Annual 1999: Issues and Trends  

NSDL National Science Digital Library

Renewable energy provided only three percent of US utility power purchases overall in 1995, and the average purchase price of electricity from non-utilities using renewable energy was 31 percent higher than the average retail price, according the US EIA's latest Renewable Energy Annual 1999: Issues and Trends. The EIA presents additional data on renewable electricity purchases, transmission pricing issues for electricity, wood energy, and wind energy, among other topics, in this 90-page release.

258

Modeled radar surface signature of deep ocean convection  

Microsoft Academic Search

Deep ocean convection, the process by which the deep waters of the world's oceans are created and renewed, plays a key role in the global thermohaline circulation and hence the world's heat balance. The process of deep ocean convection involves a vigorous overturning of the ocean water column down to depths of 2000-3000 m in an area probably not larger

Kenneth W. Fischer; Sonya Legg; Walter H. Munk; Robert A. Shuchman; Roland W. Garwood; Jeffrey P. Palshook

1999-01-01

259

Oceans Alive  

NSDL National Science Digital Library

Oceans Alive covers basic information about Earth's oceans, including sections such as: The Water Planet, Oceans in Motion, Life in the Sea, Scientists at Sea and Resources. Topics include physical features of oceans, how the oceans formed, the water cycle, currents and waves, ebbs and tides, ocean plants and animals, and ocean research. The resources section contains links for more information about oceans, as well as class activities to accompany the material on the site.

Rosentrater, Lynn

260

Ocean Planet: Ocean Market  

NSDL National Science Digital Library

Unit from Smithsonian multidisciplinary ocean curriculum. Lesson plan focuses on foods, materials and medicines that comes form marine life, how these resources are harvested and processed and the impacts of fisheries. Students identify and classify consumer goods from the ocean and calculate their cost. Unit includes: background essay; teacher instructions; forms for student activity; discussion questions; all online in PDF format. Resources include online version of Smithsonian Ocean Planet exhibition.

261

Gains from an integrated market for tradable renewable energy credits  

Microsoft Academic Search

Decoupling the environmental attributes of renewable energy (RE) generation from the physical unit of energy is an innovative mechanism for marketing green or renewable power. The introduction of ‘Tradable Renewable Energy Credits’ (TRECs) allows the green power attributes of energy to be sold or traded separately from the physical unit of energy. Since the green power certificate system removes potential

Pallab Mozumder; Achla Marathe

2004-01-01

262

Atmospheric Correction of Ocean Color Imagery: Use of the Junge Power-Law Aerosol Size Distribution with Variable Refractive Index to Handle Aerosol Absorption  

NASA Astrophysics Data System (ADS)

When strongly absorbing aerosols are present in the atmosphere, the usual two-step procedure of processing ocean color data (1) atmospheric correction to provide the water-leaving reflectance ( w ), followed by (2) relating w to the water constituents fails and simultaneous estimation of the ocean and aerosol optical properties is necessary. We explore the efficacy of using a simple model of the aerosol a Junge power-law size distribution consisting of homogeneous spheres with arbitrary refractive index in a nonlinear optimization procedure for estimating the relevant oceanic and atmospheric parameters for case 1 waters. Using simulated test data generated from more realistic aerosol size distributions (sums of log-normally distributed components with different compositions), we show that the ocean s pigment concentration ( C ) can be retrieved with good accuracy in the presence of weakly or strongly absorbing aerosols. However, because of significant differences in the scattering phase functions for the test and power-law distributions, large error is possible in the estimate of the aerosol optical thickness. The positive result for C suggests that the detailed shape of the aerosol-scattering phase function is not relevant to the atmospheric correction of ocean color sensors. The relevant parameters are the aerosol single-scattering albedo and the spectral variation of the aerosol optical depth. We argue that the assumption of aerosol sphericity should not restrict the validity of the algorithm and suggest an avenue for including colored aerosols, e.g., wind-blown dust, in the procedure. A significant advantage of the new approach is that realistic multicomponent aerosol models are not required for the retrieval of C .

Chomko, Roman M.; Gordon, Howard R.

1998-08-01

263

NOAA OTEC CWP (National Oceanic and Atmospheric Administration Ocean Thermal Energy Conversion Cold Water Pipe) at-sea test. Volume 3: Additional tabulation of the power spectra, part 2  

NASA Astrophysics Data System (ADS)

Data collected during the Ocean Thermal Energy Conversion (OTEC) Cold Water Pipe At Sea Test are analyzed. Also included are the following ittems: (1) sensor factors and offsets, and the data processing algorithms used to convert the recorded sensor measurements from electrical to engineering units; (2) plots of the power spectra estimates obtained from a fast fourier transform (FFT) analysis of selected channels; (3) plots of selected sensor measurements as a function of time; and (4) plots of bending strain along the pipe using statistics and values presented.

1983-12-01

264

NOAA OTEC CWP (National Oceanic and Atmospheric Administration Ocean Thermal Energy Conversion Cold Water Pipe) at-sea test. Volume 3, part 1: Tabulation of the power spectra for selected channels  

NASA Astrophysics Data System (ADS)

Data collected during the Ocean Thermal Energy Conversion (OTEC) Cold Water Pipe At-Sea Test was analyzed. Data presented included: (1)sensor factors and off sets and the data processing algorithms used to convert the recorded sensor measurements from electrical units to engineering units; (2) plots of the power spectra estimates obtained from a fast Fourier transform (FFT) analysis of selected channels; (3) plots of selected sensor measurements as a function of time; and (4) plots of bending strain along the pipe. The mean, root-mean-square (RMS) maximum, and minimum values at each depth are shown in each plot.

1983-11-01

265

Renewable Energy and Climate Change  

SciTech Connect

The Intergovernmental Panel on Climate Change issued the Special Report on Renewable Energy Sources and Climate Change Mitigation (SRREN) at http://srren.ipcc-wg3.de/ (May 2011 electronic version; printed form ISBN 978-1-107-60710-1, 2012). More than 130 scientists contributed to the report.* The SRREN assessed existing literature on the future potential of renewable energy for the mitigation of climate change within a portfolio of mitigation options including energy conservation and efficiency, fossil fuel switching, RE, nuclear and carbon capture and storage (CCS). It covers the six most important renewable energy technologies - bioenergy, direct solar, geothermal, hydropower, ocean and wind, as well as their integration into present and future energy systems. It also takes into consideration the environmental and social consequences associated with these technologies, the cost and strategies to overcome technical as well as non-technical obstacles to their application and diffusion.

Chum, H. L.

2012-01-01

266

The impact of oceanic circulation and phase transfer on the dispersion of radionuclides released from the Fukushima Dai-ichi Nuclear Power Plant  

NASA Astrophysics Data System (ADS)

The mechanism behind the dispersion of radionuclides released from the Fukushima Dai-ichi Nuclear Power Plant on March 2011 is investigated using a numerical model. This model is a Lagrangian particle tracking-ocean circulation coupled model that is capable of solving the movement and migration of radionuclides between seawater, particulates, and bottom sediments. Model simulations show the radionuclides dispersing rapidly into the interior of the North Pacific once they enter a meso-scale eddy. However, some radionuclides also remain near the coast, with spatial distribution depending strongly on the oceanic circulation during the first month after the release. Major adsorption to bottom sediments occurs during this first month and many of these radionuclides remain on the sea floor once they are adsorbed. Model results suggest that weak offshore advection during the first month will increase the adsorption of radionuclides to bottom sediments and decelerate the dispersion to the open ocean. If vertical mixing is weak, however, fewer radionuclides reach the sea floor and adsorb to bottom sediments. More radionuclides will then quickly disperse to the open ocean.

Choi, Y.; Kida, S.; Takahashi, K.

2013-07-01

267

Feasibility Study of Economics and Performance of Geothermal Power Generation at the Lakeview Uranium Mill Site in Lakeview, Oregon. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Lakeview Uranium Mill site in Lakeview, Oregon, for a feasibility study of renewable energy production. The EPA contracted with the National Renewable Energy Laboratory (NREL) to provide technical assistance for the project. The purpose of this report is to describe an assessment of the site for possible development of a geothermal power generation facility and to estimate the cost, performance, and site impacts for the facility. In addition, the report recommends development pathways that could assist in the implementation of a geothermal power system at the site.

Hillesheim, M.; Mosey, G.

2013-11-01

268

Communication systems for grid integration of renewable energy resources  

Microsoft Academic Search

There is growing interest in renewable energy around the world. Since most renewable sources are intermittent in nature, it is a challenging task to integrate renewable energy resources into the power grid infrastructure. In this grid integration, communication systems are crucial technologies, which enable the accommodation of distributed renewable energy generation and play an extremely important role in monitoring, operating,

F. Richard Yu; Peng Zhang; Weidong Xiao; Paul Choudhury

2011-01-01

269

Marine and Hydrokinetic Renewable Energy Devices, Potential Navigational Hazards and Mitigation Measures  

SciTech Connect

On April 15, 2008, the Department of Energy (DOE) issued a Funding Opportunity Announcement for Advanced Water Power Projects which included a Topic Area for Marine and Hydrokinetic Renewable Energy Market Acceleration Projects. Within this Topic Area, DOE identified potential navigational impacts of marine and hydrokinetic renewable energy technologies and measures to prevent adverse impacts on navigation as a sub-topic area. DOE defines marine and hydrokinetic technologies as those capable of utilizing one or more of the following resource categories for energy generation: ocean waves; tides or ocean currents; free flowing water in rivers or streams; and energy generation from the differentials in ocean temperature. PCCI was awarded Cooperative Agreement DE-FC36-08GO18177 from the DOE to identify the potential navigational impacts and mitigation measures for marine hydrokinetic technologies. A technical report addressing our findings is available on this Science and Technology Information site under the Product Title, "Marine and Hydrokinetic Renewable Energy Technologies: Potential Navigational Impacts and Mitigation Measures". This product is a brochure, primarily for project developers, that summarizes important issues in that more comprehensive report, identifies locations where that report can be downloaded, and identifies points of contact for more information.

Cool, Richard, M.; Hudon, Thomas, J.; Basco, David, R.; Rondorf, Neil, E.

2009-12-01

270

Renewable Electricity Futures Study  

E-print Network

Renewable Electricity Futures Study Exploration of High-Penetration Renewable Electricity Futures PDF Volume 4 PDF #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory. (2012

271

Renewable energy for sustainable agriculture  

Microsoft Academic Search

Agriculture is the sole provider of human food. Most farm machines are driven by fossil fuels, which contribute to greenhouse\\u000a gas emissions and, in turn, accelerate climate change. Such environmental damage can be mitigated by the promotion of renewable\\u000a resources such as solar, wind, biomass, tidal, geo-thermal, small-scale hydro, biofuels and wave-generated power. These renewable\\u000a resources have a huge potential

A. Chel; G. Kaushik

2011-01-01

272

Assessment of ocean thermal energy conversion  

E-print Network

Ocean thermal energy conversion (OTEC) is a promising renewable energy technology to generate electricity and has other applications such as production of freshwater, seawater air-conditioning, marine culture and chilled-soil ...

Muralidharan, Shylesh

2012-01-01

273

OCEAN FRIEND CHALLENGE Continue learning about the ocean after your visit at  

E-print Network

the ocean affect our climate & weather? Plankton Powered Find out how phytoplankton is important to you. HOWOCEAN FRIEND CHALLENGE Continue learning about the ocean after your visit at www.ocean.si.edu. Look for connections between your life and the ocean. You don't need to live near the ocean to do this! Find out how

Mathis, Wayne N.

274

Conserving mass and energy in cooling models of oceanic lithosphere requires upper mantle origins for trends in subsidence and heat flux and indicates global power of 30 TW  

NASA Astrophysics Data System (ADS)

One-dimensional conductive cooling models of ocean lithosphere fail to predict the lateral variation in oceanic heat flux and provide problematic calculations of subsidence, for reasons enumerated below. Our new model follows conservation laws and shows that bathymetric trends are tied to upper mantle temperature variations, given realistic values for thermal expansivity. Heat flux increases towards mid-ocean ridges due to (1) flux varying across upper mantle convection cells and (2) redistribution of mantle heat (Qmtl) by moving magma, and also by (3) hydrothermal circulation. Foremost, widespread, lateral, uptake of Qmtl as latent heat occurs during deep lithospheric melting but this energy is released near ridges through dike emplacement during seafloor spreading. Redistribution and energy conservation account for the local heat flux maximum near x=1200 km, heretofore unexplained. We show that the trend Qmtl(x) far from the ridge is consistent with behavior near the ridge and measured global power of <30 TW , which is compatible with quasi-steady-state conditions and an enstatite chondrite model for the Earth. Observables, such as the pattern of mid-ocean ridges on the globe, point to layered convection and lack of vigor, and gross characteristics of the Earth are supported by an enstatite chondrite model. Our analysis circumvents problems associated with 1-d conductive cooling models of the lithosphere: (1) Existing models replaced conservation of rock-mass with isostatic balance, which unwittingly created subsidence by converting lithosphere to ocean. (2) Half-space models incorrectly cancelled infinities. (3) Plate models omitted latent heat which is immense. (4) 1-d models only permit vertical contraction. These faulty constructs fitted seafloor depths through erroneous use of volumetric (?V=3?L) thermal expansivity coupled with great leeway in cross-multiplied parameters. The underlying premise that thermal aspects of lithosphere can be separately evaluated from those of the mantle is incorrect because the lithosphere is volumetrically significant (16% of the upper mantle), but not the main part of mantle circulation.

Criss, R. E.; Hofmeister, A. M.; Hamza, V. N.

2008-12-01

275

Design and cost of near-term OTEC (Ocean Thermal Energy Conversion) plants for the production of desalinated water and electric power  

NASA Astrophysics Data System (ADS)

There currently is an increasing need for both potable water and power for many islands in the Pacific and Caribbean. The Ocean Thermal Energy Conversion (OTEC) technology fills these needs and is a viable option because of the unlimited supply of ocean thermal energy for the production of both desalinated water and electricity. The OTEC plant design must be flexible to meet the product-mix demands that can be very different from site to site. Different OTEC plants are described that can supply various mixes of desalinated water and vapor; the extremes being either all water and no power or no water and all power. The economics for these plants are also presented. The same flow rates and pipe sizes for both the warm and cold seawater streams are used for different plant designs. The OTEC plant designs are characterized as near-term because no major technical issues need to be resolved or demonstrated. The plant concepts are based on DOE-sponsored experiments dealing with power systems, advanced heat exchanger designs, corrosion and fouling of heat exchange surfaces, and flash evaporation and moisture removal from the vapor using multiple spouts. In addition, the mature multistage flash evaporator technology is incorporated into the plant designs where appropriate. For the supply and discharge warm and cold uncertainties do exist because the required pipe sizes are larger than the maximum currently deployed; 40 inch high density polyethylene pipe at Keahole Point in Hawaii.

Rabas, T.; Panchal, C. B.; Genens, L.

276

Ocean energy program summary. Volume 2: Research summaries  

NASA Astrophysics Data System (ADS)

The oceans are the world's largest solar energy collector and storage system. Covering 71 percent of the earth's surface, this stored energy is realized as waves, currents, and thermal salinity gradients. The purpose of the Federal Ocean Energy Technology (OET) Program is to develop techniques that harness this ocean energy in a cost effective and environmentally acceptable manner. The OET Program seeks to develop ocean energy technology to a point where the commercial sector can assess whether applications of the technology are viable energy conversion alternatives or supplements to systems. Past studies conducted by the U.S. Department of Energy (DOE) have identified ocean thermal energy conversion (OTEC) as the largest potential contributor to United States energy supplies from the ocean resource. As a result, the OET Program concentrates on research to advance OTEC technology. Current program emphasis has shifted to open-cycle OTEC power system research because the closed-cycle OTEC system is at a more advanced stage of development and has already attracted industrial interest. During FY 1989, the OET Program focused primarily on the technical uncertainties associated with near-shore open-cycle OTEC systems ranging in size from 2 to 15 MW(sub e). Activities were performed under three major program elements: thermodynamic research and analysis, experimental verification and testing, and materials and structures research. These efforts addressed a variety of technical problems whose resolution is crucial to demonstrating the viability of open-cycle OTEC technology. This publications is one of a series of documents on the Renewable Energy programs sponsored by the U.S. Department of Energy. An overview of all the programs is available, entitled Programs in Renewable Energy.

1990-01-01

277

Advanced Mechanisms for the Promotion of Renewable Energy: Models for the Future Evolution of the German Renewable Energy Act  

Microsoft Academic Search

The German Renewable Energy Act (EEG) has been very successful in promoting the deployment of wind power plants and other renewable energy power generating technologies in Germany. The increasing share of EEG-power in the generation portfolio, increasing amounts of fluctuating power generation, and the growing European integration of power markets governed by competition calls for a re-design of the EEG.

Ole Langniß; Jochen Diekmann; Ulrike Lehr

2008-01-01

278

Funding for Renewable Energy  

NSDL National Science Digital Library

On May 25, 1999, the House and Senate appropriation committees cut funding for renewable energy and energy efficiency programs, while at the same time increasing funding for nuclear and fossil fuel programs. This move runs counter to the opinions of most Americans, according to a recent survey commissioned by the Sustainable Energy Coalition. According to the survey, Americans believe renewable energy and energy efficiency funding should be prioritized, while nuclear power and fossil fuel spending should be reduced. Following the budget changes, President Clinton issued an executive order for federal agencies to cut energy consumption by 35 percent of 1985 levels by 2010, as the federal government is the largest consumer of energy. Clinton also urged Congress to reevaluate and approve the 2000 budget funding requests for research to help American businesses use energy-saving technology. This week's In The News examines the recent federal decisions regarding energy use and technology; the eight resources listed provide background information on this important issue.

Schultz, Jennifer J.

279

The renewables portfolio standard in Texas: an early assessment  

Microsoft Academic Search

Texas has rapidly emerged as one of the leading wind power markets in the United States. This development can be largely traced to a well-designed and carefully implemented renewables portfolio standard (RPS). The RPS is a new policy mechanism that has received increasing attention as an attractive approach to support renewable power generation. Though replacing existing renewable energy policies with

Ole Langniss; Ryan Wiser

2003-01-01

280

The renewables portfolio standard in Texas: An early assessment  

Microsoft Academic Search

Texas has rapidly emerged as one of the leading wind power markets in the United States. This development can be largely traced to a well-designed and carefully implemented renewables portfolio standard (RPS). The RPS is a new policy mechanism that has received increasing attention as an attractive approach to support renewable power generation. Though replacing existing renewable energy policies with

Ryan H. Wiser; Ole Langniss

2001-01-01

281

RENEWABLES 2005 GLOBAL STATUS REPORT Notes and References Companion Document  

E-print Network

Energy Compared with Fossil Fuels and Nuclear Power N12. Global Investment in Renewable Energy....................................................................................................................................16 N11. Renewable Energy Cost Comparisons.................................................................................................17 Table N11a. Power Generation Costs, 2002 and Projections for 2010 Table N11b. Costs of Renewable

Kammen, Daniel M.

282

A Stochastic Unit Commitment Model for Integrating Renewable Supply  

E-print Network

from the large-scale integration of renewable energy sources and deferrable demand in power systems. We of renewable energy and demand response integration on power system operations it is necessary to representA Stochastic Unit Commitment Model for Integrating Renewable Supply and Demand Response Anthony

Oren, Shmuel S.

283

Concentrating renewable energy in grid-tied datacenters  

Microsoft Academic Search

Datacenters, the large server farms that host widely used Internet services, account for a larger fraction of world- wide carbon emissions each year. Increasingly, datacenters are reducing their emissions by using clean, renewable energy from rooftop solar panels to partially power their servers. While some customers value renewable-powered servers, many others are indifferent. We argue that renewable energy produced on

Nan Deng; Christopher Stewart; Jing Li

2011-01-01

284

Ocean Mammals  

NSDL National Science Digital Library

What are the different types of mammals that live in the ocean? First, you will need to use the Ocean Mammals Table 1. This website is here for you to learn about ocean mammals. Mammals 2. This website will help you learn about the different mammals that live in the ocean. Ocean Mammals 3. Here is some information about how oil spills effect animal skin in the ocean. Oil Spills 4. This link ...

Teschner, Miss

2011-04-06

285

Developing Government Renewable Energy Projects  

SciTech Connect

The US Army Corps of Engineers has retained Idaho National Laboratory (INL) to conduct a study of past INL experiences and complete a report that identifies the processes that are needed for the development of renewable energy projects on government properties. The INL has always maintained expertise in power systems and applied engineering and INL’s renewable energy experiences date back to the 1980’s when our engineers began performing US Air Force wind energy feasibility studies and development projects. Over the last 20+ years of working with Department of Defense and other government agencies to study, design, and build government renewable projects, INL has experienced the do’s and don’ts for being successful with a project. These compiled guidelines for government renewable energy projects could include wind, hydro, geothermal, solar, biomass, or a variety of hybrid systems; however, for the purpose of narrowing the focus of this report, wind projects are the main topic discussed throughout this report. It is our thought that a lot of what is discussed could be applied, possibly with some modifications, to other areas of renewable energy. It is also important to note that individual projects (regardless the type) vary to some degree depending on location, size, and need but in general these concepts and directions can be carried over to the majority of government renewable energy projects. This report focuses on the initial development that needs to occur for any project to be a successful government renewable energy project.

Kurt S. Myers; Thomas L. Baldwin; Jason W. Bush; Jake P. Gentle

2012-07-01

286

A Review of Barriers to and Opportunities for the Integration of Renewable Energy in the Southeast  

SciTech Connect

The objectives of this study were to prepare a summary report that examines the opportunities for and obstacles to the integration of renewable energy resources in the Southeast between now and the year 2030. The report, which is based on a review of existing literature regarding renewable resources in the Southeast, includes the following renewable energy resources: wind, solar, hydro, geothermal, biomass, and tidal. The evaluation was conducted by the Oak Ridge National Laboratory for the Energy Foundation and is a subjective review with limited detailed analysis. However, the report offers a best estimate of the magnitude, time frame, and cost of deployment of renewable resources in the Southeast based upon the literature reviewed and reasonable engineering and economic estimates. For the purposes of this report, the Southeast is defined as the states of Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia. In addition, some aspects of the report (wind and geothermal) also consider the extended Southeast, which includes Maryland, Missouri, Oklahoma, and Texas. A description of the existing base of renewable electricity installations in the region is given for each technology considered. Where available, the possible barriers and other considerations regarding renewable energy resources are listed in terms of availability, investment and maintenance costs, reliability, installation requirements, policies, and energy market. As stated above, the report is a comprehensive review of renewable energy resources in the southeastern region of United States based on a literature study that included information obtained from the Southern Bio-Power wiki, sources from the Energy Foundation, sources available to ORNL, and sources found during the review. The report consists of an executive summary, this introductory chapter describing report objectives, a chapter on analysis methods and the status of renewable resources, chapters devoted to each identified renewable resource, and a brief summary chapter. Chapter 2 on analysis methods and status summarizes the benefits of integrating renewable energy resources in the Southeast. The utilization of the existing fuels, both the fossil fuels and the renewable energy resources, is evaluated. The financial rewards of renewable resources are listed, which includes the amount of fuel imported from outside the Southeast to find the net benefit of local renewable generation, and both the typical and new green job opportunities that arise from renewable generation in the Southeast. With the load growth in the Southeast, the growth of transmission and fossil fuel generation may not meet the growing demands for energy. The load growth is estimated, and the benefits of renewable resources for solving local growing energy demands are evaluated. Chapters 3-7 discuss the key renewable energy resources in the Southeast. Six resources available in this region that are discussed are (1) wind, including both onshore and offshore; (2) solar, including passive, photovoltaic, and concentrating; (3) biomass energy, including switchgrass, biomass co-firing, wood, woody biomass, wood industry by-products (harvesting residues, mill waste, etc.), agricultural byproducts, landfill gas to energy and anaerobic digester gas; (4) hydro; and (5) geothermal. Because of limited development, ocean wave and tidal were not considered to be available in significant quantity before 2030 and are not presented in the final analysis. Estimates on the location of potential megawatt generation from these renewable resources in the Southeast are made. Each chapter will describe the existing base of the renewable electricity installations in the region now and, when available, the base of the existing manufacturing capacity in the region for renewable energy resources hardware and software. The possible barriers and considerations for renewable energy resources are presented.

McConnell, Ben W [ORNL; Hadley, Stanton W [ORNL; Xu, Yan [ORNL

2011-08-01

287

Renewable Energy Glossary of Terms  

NSDL National Science Digital Library

The Center for the Advancement of Process Technology (CAPT) has created this 22-page glossary of renewable energy terms which was "taken in part from the EPA and the Energy Information Administrations web site, and provides definitions of a number of important terms associated with power generation technologies and their environmental impacts, including definitions of specific pollutants, technologies, and the key terms related to the electric power marketplace." From acid rain to wood pellets, the terms are defined as they relate to renewable energy development and applications.

2010-03-24

288

US Renewable Futures in the GCAM  

SciTech Connect

This project examines renewable energy deployment in the United States using a version of the GCAM integrated assessment model with detailed a representation of renewables, the GCAM-RE. Electricity generation was modeled in four generation segments and 12-subregions. This level of regional and sectoral detail allows a more explicit representation of renewable energy generation. Wind, solar thermal power, and central solar PV plants are implemented in explicit resource classes with new intermittency parameterizations appropriate for each technology. A scenario analysis examines a range of assumptions for technology characteristics, climate policy, and long-distance transmission. We find that renewable generation levels grow over the century in all scenarios. As expected, renewable generation increases with lower renewable technology costs, more stringent climate policy, and if alternative low-carbon technology are not available. The availability of long distance transmission lowers policy costs and changes the renewable generation mix.

Smith, Steven J.; Mizrahi, Andrew H.; Karas, Joseph F.; Nathan, Mayda

2011-10-06

289

Renewable Electricity Futures Study  

E-print Network

Renewable Electricity Futures Study End-use Electricity Demand Volume 3 of 4 Volume 2 PDF Volume 3;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Energy Laboratory Baldwin, S. U Sandor, D. National Renewable Energy Laboratory Suggested Citations Renewable Electricity Futures Study

290

August 2011 Environmental Assessment of Ocean Thermal Energy  

E-print Network

August 2011 1 Environmental Assessment of Ocean Thermal Energy Conversion in Hawaii Available data prompted ocean thermal energy conversion (OTEC) technology to be re-considered for use in Hawaii for OTEC development. Keywords- Ocean thermal energy conversion, OTEC, renewable energy, Hawaii

291

Canada's Oceans  

NSDL National Science Digital Library

This overview of Canadanain oceans outlines the characteristics of the Pacific, Arctic and Atlantic marine ecosystems. After a brief look at Canada's ocean environments from a global perspective, additional chapters provide an overview of the physical properties, fauna and human impacts associated with Canada's oceans. For each ocean there is information on water properties, currents, tides, and the ocean floor. Ocean floor information includes descriptions of ocean basins, submarine ridges, continental shelves and sedimentation while current information includes the causes, effects, and names of the currents. There is an explanation of the cause of tides and how they affect each shoreline.

292

The Role of the Green Party in Germany's Renewable Energy Policy  

E-print Network

The Role of the Green Party in Germany's Renewable Energy Policy A Healthy Serving of Greens power, increasing reliance on renewable energy Renewable Energy Sources Act of 2000 and 2004 -provided, increasing renewable profitability #12;Green Party Development vs. Renewable Energy Policy Advancement Green

New Hampshire, University of

293

Energy Conservation Renewable Energy  

E-print Network

Energy Conservation Renewable Energy The Future at Rutgers University Facilities & Capital Planning ti ? R bl EWhy Conservation? Renewable Energy · Climate control reduces green house gases · Reduces

Delgado, Mauricio

294

Ocean Fertilization and Other Climate Change Mitigation Strategies: An Overview  

SciTech Connect

In order to evaluate ocean fertilization in the larger context of other proposed strategies for reducing the threat of the global warming, a wide range of different climate change mitigation approaches are compared in terms of their long-term potential, stage of development, relative costs and potential risks, as well as public acceptance. This broad comparative analysis is carried out for the following climate change mitigation strategies: supply-side and end-use efficiency improvements, terrestrial and geological carbon sequestration, CO2 ocean disposal and iron fertilization, nuclear power, and renewable energy generation from biomass, passive solar, solar thermal, photovoltaics, hydroelectric and wind. In addition, because of the inherent problems of conducting an objective comparative cost-benefit analysis, two non-technological solutions to global warming are also discussed: curbing population growth and transitioning to a steady-state economy.

Huesemann, Michael H.

2008-07-29

295

Valuing the attributes of renewable energy investments  

Microsoft Academic Search

Increasing the proportion of power derived from renewable energy sources is becoming an increasingly important part of many countries's strategies to achieve reductions in greenhouse gas emissions. However, renewable energy investments can often have external costs and benefits, which need to be taken into account if socially optimal investments are to be made. This paper attempts to estimate the magnitude

Ariel Bergmann; Nick Hanley; Robert Wright

2006-01-01

296

Ocean Fertilization and Ocean Acidification  

Microsoft Academic Search

It has been suggested that ocean fertilization could help diminish ocean acidification. Here, we quantitatively evaluate this suggestion. Ocean fertilization is one of several ocean methods proposed to mitigate atmospheric CO2 concentrations. The basic idea of this method is to enhance the biological uptake of atmospheric CO2 by stimulating net phytoplankton growth through the addition of iron to the surface

L. Cao; K. Caldeira

2008-01-01

297

Communication Systems for Grid Integration of Renewable Energy Resources  

E-print Network

There is growing interest in renewable energy around the world. Since most renewable sources are intermittent in nature, it is a challenging task to integrate renewable energy resources into the power grid infrastructure. In this grid integration, communication systems are crucial technologies, which enable the accommodation of distributed renewable energy generation and play extremely important role in monitoring, operating, and protecting both renewable energy generators and power systems. In this paper, we review some communication technologies available for grid integration of renewable energy resources. Then, we present the communication systems used in a real renewable energy project, Bear Mountain Wind Farm (BMW) in British Columbia, Canada. In addition, we present the communication systems used in Photovoltaic Power Systems (PPS). Finally, we outline some research challenges and possible solutions about the communication systems for grid integration of renewable energy resources.

Yu, F Richard; Xiao, Weidong; Choudhury, Paul

2011-01-01

298

Renewable Energy ] (  

E-print Network

the expected electric power production on an hourly basis. The third step calculates market value based resource uses mean wind speed, from a nearby weather station or from a wind model. The US Department. Investor-grade hub height data require a meteorological tower. For example, in Horn's Rev, Denmark, 3 years

Firestone, Jeremy

299

Mercury Air Pollution Reflected in Ocean Fish  

MedlinePLUS

... features on this page, please enable JavaScript. Mercury Air Pollution Reflected in Ocean Fish, Study Says Concentrations in ... mercury in the open ocean is fallout from air pollution, especially from coal-fired power plants and artisanal ...

300

Using Renewable Energy to Pump Water  

E-print Network

Solar and wind power can be economical and environmentally friendly ways to pump water for homes, irrigation and/or livestock water wells. This publication explains how these pumps work, the advantages and disadvantages of using renewable energy...

Mecke, Michael; Enciso, Juan

2007-06-08

301

COMMISSION GUIDEBOOK RENEWABLES PORTFOLIO  

E-print Network

and Renewable Energy Division. Publication Number: CEC300 2012006CMF i #12;TABLE OF CONTENTS I. Introduction Renewable Energy Office Dave Ashuckian, P.E. Deputy Director Efficiency and Renewable Energy Division Robert the eligibility requirements and process for certifying eligible renewable energy resources for California

302

NEW RENEWABLE FACILITIES PROGRAM  

E-print Network

............................................................................................ B-1 #12;1 Introduction The California Energy Commission developed this New Renewable FacilitiesCALIFORNIA ENERGY COMMISSION NEW RENEWABLE FACILITIES PROGRAM GUIDEBOOK APRIL 2006 CEC-300 Director Heather Raitt Technical Director Renewable Energy Program Drake Johnson Office Manager Renewable

303

Renewable Electricity Futures Study  

E-print Network

Renewable Electricity Futures Study Executive Summary NREL is a national laboratory of the U for Sustainable Energy, LLC. Volume 2 PDF Volume 3 PDF Volume 1 PDF Volume 4 PDF #12;Renewable Electricity Futures. National Renewable Energy Laboratory Suggested Citations Renewable Electricity Futures Study (Entire Report

304

Power Plant Options Report for Thompson Island prepared by the  

E-print Network

Power Plant Options Report for Thompson Island A report prepared by the Renewable Energy Research....................................................................... 7 3. Grid-connected and Autonomous Renewable Power Systems ................................ 9 3.1. Renewable Power Sources .............................................................................. 9 3

Massachusetts at Amherst, University of

305

“Energy, People, Environment”. Development of an integrated renewable energy and energy storage system, an uninterruptible power supply for people and for better environment  

Microsoft Academic Search

Energy continues to be an essential key to worldwide development approaching higher standard of life. The main source of energy in the past and present in industrial nations has been fossil energy and in the next century these countries will need to depend more on coal, nuclear and renewable energy. Generation of energy from fossil fuels is always associated with

A. Zahedi

1994-01-01

306

Renewable Energy RFPs: Solicitation Response and Wind ContractPrices  

SciTech Connect

As input into renewable energy policy discussions in Illinois, we have been asked to provide information on the results of recent, competitive solicitations for renewable energy, with a focus on wind power. In particular, this memorandum includes two pieces of information: (1) Publicly available data on the strength of response to recent renewable energy solicitations; and (2) Wind power purchase costs as revealed through actual power purchase agreements with electric utilities.

Wiser, Ryan; Bolinger, Mark

2005-04-18

307

Initial flux of sediment-associated radiocesium to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant  

NASA Astrophysics Data System (ADS)

This study aimed to quantify the flux of radiocesium in the Abukuma Basin (5,172 km2), the largest river system affected by fallout from the Fukushima Daiichi Nuclear Power Plant (FDNPP) event. In the period from 10 August 2011 to 11 May 2012 an estimated 84 to 92% of the total radiocesium transported in the basin's fluvial system was carried in particulate form. During this monitoring period Typhoon Roke (September 2011) was observed to induce a significant and temporally punctuated redistribution of radiocesium. The storm-mobilised radiocesium was an estimated 6.18 Terabecquerels corresponding to 61.4% of the total load delivered to the coastal zone during the observation period. The total flux of radiocesium into the Pacific Ocean estimated at the outlet station (basin area 5,172 km2) was 5.34 TBq for 137Cs, and 4.74 TBq for 134Cs, corresponding to 1.13% of the total estimated radiocesium fallout over the basin catchment (890 TBq). This was equivalent to the estimated amount of direct leakage from FDNPP to the ocean during June 2011 to September 2012 of 17 TBq and the Level 3 Scale Leakage on 21August 2013 (24 TBq).

Yamashiki, Yosuke; Onda, Yuichi; Smith, Hugh G.; Blake, William H.; Wakahara, Taeko; Igarashi, Yasuhito; Matsuura, Yuki; Yoshimura, Kazuya

2014-01-01

308

Initial flux of sediment-associated radiocesium to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant.  

PubMed

This study aimed to quantify the flux of radiocesium in the Abukuma Basin (5,172?km(2)), the largest river system affected by fallout from the Fukushima Daiichi Nuclear Power Plant (FDNPP) event. In the period from 10 August 2011 to 11 May 2012 an estimated 84 to 92% of the total radiocesium transported in the basin's fluvial system was carried in particulate form. During this monitoring period Typhoon Roke (September 2011) was observed to induce a significant and temporally punctuated redistribution of radiocesium. The storm-mobilised radiocesium was an estimated 6.18 Terabecquerels corresponding to 61.4% of the total load delivered to the coastal zone during the observation period. The total flux of radiocesium into the Pacific Ocean estimated at the outlet station (basin area 5,172?km(2)) was 5.34?TBq for (137)Cs, and 4.74?TBq for (134)Cs, corresponding to 1.13% of the total estimated radiocesium fallout over the basin catchment (890?TBq). This was equivalent to the estimated amount of direct leakage from FDNPP to the ocean during June 2011 to September 2012 of 17?TBq and the Level 3 Scale Leakage on 21 August 2013 (24?TBq). PMID:24429978

Yamashiki, Yosuke; Onda, Yuichi; Smith, Hugh G; Blake, William H; Wakahara, Taeko; Igarashi, Yasuhito; Matsuura, Yuki; Yoshimura, Kazuya

2014-01-01

309

National Renewable Energy Laboratory Innovation for Our Energy Future  

E-print Network

National Renewable Energy Laboratory Innovation for Our Energy Future NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance two-way power flow with communication and control. Renewable Energy Grid Integration As the market

310

Integrating Renewable Energy Using Data Analytics Systems: Challenges and Opportunities  

E-print Network

Integrating Renewable Energy Using Data Analytics Systems: Challenges and Opportunities Andrew and intermittent nature of many renewable energy sources makes integrating them into the electric grid challenging-following loads adjust their power consumption to match the avail- able renewable energy supply. We show Internet

California at Berkeley, University of

311

Renewable Energy Integration and the Impact of Carbon Regulation  

E-print Network

Renewable Energy Integration and the Impact of Carbon Regulation on the Electric Grid Future Grid the Future Electric Energy System #12;Thrust Area 3 White Paper Renewable Energy Integration and the Impact. #12;ii Executive Summary The integration of renewable energy resources into the power grid is driven

312

Leveraging Renewable Energy in Data Centers: Present and Future  

E-print Network

Keywords Renewable energy, energy-aware scheduling, data centers. 1. INTRODUCTION Data centers consumeLeveraging Renewable Energy in Data Centers: Present and Future Keynote Summary Ricardo Bianchini in powering data centers (at least par- tially) with renewable or "green" sources of energy, such as solar

Bianchini, Ricardo

313

Renewable energy policy and electricity restructuring: a California case study  

Microsoft Academic Search

Many countries are in the process of deregulating and restructuring their electric power industries. Although the introduction of retail competition may have negative impacts on the development of renewable energy, a number of countries are establishing new programs to support these clean energy technologies. In the United States, debate has centered on three primary renewables support mechanisms: (1) the renewables

Ryan Wiser; Steven Pickle; Charles Goldman

1998-01-01

314

Ocean Terracing  

Microsoft Academic Search

Artworks can improve humanity ability to apply macro-engineering principles which skirt or correct oceanographic problems impairing the economic usefulness of coastal land, the overhead airshed, and seawater temperature and salinity stability. A new form of Art, Ocean Art, is here proposed which centers on deliberate terracing of appropriate regions of our world ocean; a proposed example of macro-engineered useful Ocean

Richard B. Cathcart; Alexander A. Bolonkin

2007-01-01

315

Advanced mechanisms for the promotion of renewable energy—Models for the future evolution of the German Renewable Energy Act  

Microsoft Academic Search

The German Renewable Energy Act (EEG) has been very successful in promoting the deployment of renewable electricity technologies in Germany. The increasing share of EEG power in the generation portfolio, increasing amounts of fluctuating power generation, and the growing European integration of power markets governed by competition calls for a re-design of the EEG. In particular, a more efficient system

Ole Langniß; Jochen Diekmann; Ulrike Lehr

2009-01-01

316

Feasibility Study of Anaerobic Digestion of Food Waste in St. Bernard, Louisiana. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA) developed the RE-Powering America's Land initiative to re-use contaminated sites for renewable energy generation when aligned with the community's vision for the site. The former Kaiser Aluminum Landfill in St. Bernard Parish, Louisiana, was selected for a feasibility study under the program. Preliminary work focused on selecting a biomass feedstock. Discussions with area experts, universities, and the project team identified food wastes as the feedstock and anaerobic digestion (AD) as the technology.

Moriarty, K.

2013-01-01

317

Ocean Terracing  

E-print Network

Artworks can improve humanity ability to apply macro-engineering principles which skirt or correct oceanographic problems impairing the economic usefulness of coastal land, the overhead airshed, and seawater temperature and salinity stability. A new form of Art, Ocean Art, is here proposed which centers on deliberate terracing of appropriate regions of our world ocean; a proposed example of macro-engineered useful Ocean Art is the technically possible 21-st Century terracing of the Mediterranean Sea. Ocean Art is applicable worldwide to places that might be practically improved by its judicious employment. Such Ocean Art may constitute an entirely unique category of solutions to coastal disaster prevention planning.

Richard Cathcart; Alexander Bolonkin

2007-01-09

318

The comparative analysis of systems of long-term electric power storage intended for sources of back-up and emergency power supply, as well as for power plants using renewable energy sources  

NASA Astrophysics Data System (ADS)

This paper describes variants of using electric power accumulators of various types-lithium-ion and lead-acid storage batteries, flow-through redox storage batteries, and the hydrogen cycle-for the niche of back-up and emergency power supply sources designed for long periods of operation (8-72 h). The schematic diagrams are proposed, and, on the basis of data submitted by equipment manufacturers and designers, the comparative technical and economic analysis of these systems has been performed.

Popel', O. S.; Tarasenko, A. B.

2012-11-01

319

Ocean energy program summary  

NASA Astrophysics Data System (ADS)

The oceans are the world's largest solar energy collector and storage system. Covering 71 percent of the earth's surface, they collect and store this energy as waves, currents, and thermal and salinity gradients. The purpose of the U.S. Department of Energy's (DOE) Ocean Energy Technology (OET) Program is to develop techniques that harness this ocean energy cost effectively and in a way that does not harm the environment. The program seeks to develop ocean energy technology to a point where industry can accurately assess whether the technology is a viable energy conversion alternative, or supplement, to current power generating systems. In past studies, DOE identified ocean thermal energy conversion (OTEC), which uses the temperature difference between warm surface water and cold deep water, as the most promising of the ocean energy technologies. As a result, the OET Program is concentrating on research that advances the OTEC technology. The program also continues to monitor and study developments in wave energy, ocean current, and salinity gradient concepts; but it is not actively developing these technologies now.

1990-01-01

320

EC417: Electric Energy Systems: Adapting to Renewable Resources Description: This course will present a detailed perspective of electric power systems  

E-print Network

Circuits (EK307) Course Topics: 1. Brief History of Power Systems (the great AC-DC battle) 2. Basic Components of Power Systems (generation, transmission, electric motors and other loads) 3. Power Plants calculations 6. Analysis and Design of Transformers 7. Introduction to Power Electronics and AC/DC and DC

321

Thermal Pollution by Nuclear Power Plants. A Learning Experience for Coastal and Oceanic Awareness Studies, No. 320. [Project COAST].  

ERIC Educational Resources Information Center

This publication includes several activities regarding the use of nuclear power plants and possible effects on the environment. The materials are designed for secondary school students and include reference materials and masters for transparencies. (RH)

Delaware Univ., Newark. Coll. of Education.

322

Renew-a-Bead  

NSDL National Science Digital Library

A quantitative illustration of how non-renewable resources are depleted while renewable resources continue to provide energy. Students remove beads (units of energy) from a bag (representing a country). A certain number of beads are removed from the bag each "year." At some point, no non-renewable beads remain. Student groups have different ratios of renewable and non-renewable energy beads. A comparison of the remaining beads and time when they ran out of energy shows the value of utilizing a greater proportion of renewable resources as a sustainable energy resources.

2014-09-18

323

Renewables portfolio standard: a means for trade with electricity from renewable energy sources?  

Microsoft Academic Search

This paper discusses the main support mechanisms for enhancing the deployment of renewable energies (RE) implemented in different industrialised countries. The focus is on the electricity sector, where deregulation and liberalisation has led to market opening and introduction of competition in the formerly strongly regulated power market. Under open market conditions, price regulation mechanisms in favour of renewable energies, which

Simone Espey

2001-01-01

324

Ecodesign and Renewable Energy: How to Integrate Renewable Energy Technologies into Consumer Products  

Microsoft Academic Search

The amount of (consumer) products that consume electricity is still increasing rapidly. Emerging technologies in the field of renewable energy, such as small fuel cells, flexible photo-voltaic solar cells and human power are promising new solutions for sustainable energy sources. As renewable energy sources develop and become smaller and more flexible, possibilities of integrating them into the product design have

A. Mestre; J. C. Diehl

2005-01-01

325

The role of government in the development and diffusion of renewable energy technologies: Wind power in the United States, California, Denmark and Germany, 1970--2000  

NASA Astrophysics Data System (ADS)

This dissertation seeks to determine the role of government policy in advancing the development and diffusion of renewable energy technologies, and to determine if specific policies or policy types are more effective than others in achieving these ends. This study analyzes legislation, regulations, research and development (R&D) programs and their impacts on wind energy in California, the rest of the United States, Denmark and Germany, from 1970 through 2000. These countries (and state) were chosen because each has followed a very different path and has adopted wind energy at different rates. Demand for energy, particularly electricity, is rising rapidly worldwide. Renewable energy technologies could meet much of the world's future demand for electricity without the national security, environmental and social costs of conventional technologies. But renewables now play only a minor role in the electric generation systems of most countries. According to conventional economic theory, renewable energy will achieve greater market penetration once it is cost-competitive with conventional generation. This dissertation concludes, however, that government policy is the most significant causal variable in determining the development and diffusion of wind energy technology. Policy is more important for bringing wind energy to maturity than a nation's wind resource potential, wealth, relative differences in electricity prices, or existing infrastructure. Further, policy is essential for enabling a technology to succeed in the marketplace once it is cost-competitive. Policies can affect a technology's perceived, or real, costs; they can reduce risks or increase the availability and affordability of capital; appropriate and consistent policies can eliminate barriers to wind technology. To be adopted on a large scale, renewables require effective, appropriate and, above all, consistent policies that are legislated with a long-term view toward advancing a technology and an industry. Inconsistent policy is economically costly and creates cycles of boom and bust, making it impossible to build a strong domestic industry. To be effective, policy must place priority on demand creation rather than government R&D; it must create a market, establish turbine standards and siting criteria, require data collection and dissemination, facilitate grid access, establish price guarantees, and enable stakeholder participation.

Sawin, Janet Laughlin

2001-07-01

326

How is the ocean filled?  

NASA Astrophysics Data System (ADS)

The ocean surface rapidly exchanges heat, freshwater, and gases with the atmosphere, but once water sinks into the ocean interior, the inherited properties of seawater are closely conserved. Previous water-mass decompositions have described the oceanic interior as being filled by just a few different property combinations, or water masses. Here we apply a new inversion technique to climatological tracer distributions to find the pathways by which the ocean is filled from over 10,000 surface regions, based on the discretization of the ocean surface at 2° by 2° resolution. The volume of water originating from each surface location is quantified in a global framework, and can be summarized by the estimate that 15% of the surface area fills 85% of the ocean interior volume. Ranked from largest to smallest, the volume contributions scaled by surface area follow a power-law distribution with an exponent of -1.09 ± 0.03 that appears indicative of the advective-diffusive filling characteristics of the ocean circulation, as demonstrated using a simple model. This work quantifies the connection between the surface and interior ocean, allowing insight into ocean composition, atmosphere-ocean interaction, and the transient response of the ocean to a changing climate.

Gebbie, Geoffrey; Huybers, Peter

2011-03-01

327

Renewable Energy: Energy Security and Sustainability  

NASA Astrophysics Data System (ADS)

Renewable energy offers the possibility of providing a complete, sustainable energy infrastructure without anthropogenic emission of CO2. Large-scale implementation of renewable technologies would eliminate the need to develop and implement sequestration systems, by reducing the use of, and ultimately eliminating fossil based energy production. Renewable energy also offers energy security because indigenous resources are sufficient. The major renewable energy systems include phovoltaics (solar cells), solar thermal (electric and thermal), wind, biomass (plants and trees), hydroelectric, ocean, and geothermal. Given the intermittent nature of solar energy, only those energy systems that are coupled to an energy storage technology will be viable. Among the energy storage technologies are hydrogen, batteries, flywheels, superconductivity, ultracapacitors, pumped hydro, molten salts (for thermal storage), and compressed gas. One of the most versatile energy storage systems and the best energy carrier for transportation is hydrogen. This talk will review some of the basic renewable energy systems, present possible pathways for the implementation of hydrogen into the energy infrastructure and offer research areas that need to be addressed to increase the viability of these renewable energy technologies.

Turner, John

2002-03-01

328

The Renewable Energy Footprint  

E-print Network

With the shift toward renewable energy comes the potential for staggering land impacts – many millions of acres may be consumed to meet demand for electricity and fuel over the next 20 years. To conservationists’ dismay, the more renewable energy we...

Outka, Uma

2011-01-01

329

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

Mai, T.

2012-10-01

330

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

Hand, M. M.

2012-09-01

331

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

Mai, T.

2013-04-01

332

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

Mai, T.

2012-11-01

333

Strategies for Facilities Renewal  

E-print Network

the nec essity of renewal of the non-manufacturing infra structure of facilities to insure that they are safe, reliable, and in full environmental compliance into the 21st century. In addition, this renewal must be accomplished while competing...

Good, R. L.

334

Feasibility Study of Economics and Performance of Biopower at the Chanute Air Force Base in Rantoul, Illinois. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Chanute Air Force Base site in Rantoul, Illinois, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) was contacted to provide technical assistance for this project. The purpose of this study was to assess the site for a possible biopower system installation and estimate the cost, performance, and impacts of different biopower options.

Scarlata, C.; Mosey, G.

2013-05-01

335

Renewable Energy: Capstone  

NSDL National Science Digital Library

This is the culminating activity in the series of lessons on renewable energy. It serves to reinforce the idea that renewable sources of energy are necessary for a sustainable fuure, and to discuss some of the present impacts and potential drawbacks to renewable energy. In the activity, sudents will use online resources to research their present energy consumption and investigate whether it could economically be replaced by renewable sources.

Pratte, John

336

Renewable Electricity Futures for the United States  

SciTech Connect

This paper highlights the key results from the Renewable Electricity (RE) Futures Study. It is a detailed consideration of renewable electricity in the United States. The paper focuses on technical issues related to the operability of the U. S. electricity grid and provides initial answers to important questions about the integration of high penetrations of renewable electricity technologies from a national perspective. The results indicate that the future U. S. electricity system that is largely powered by renewable sources is possible and the further work is warranted to investigate this clean generation pathway. The central conclusion of the analysis is that renewable electricity generation from technologies that are commercially available today, in combination with a more flexible electric system, is more than adequate to supply 80% of the total U. S. electricity generation in 2050 while meeting electricity demand on an hourly basis in every region of the United States.

Mai, Trieu; Hand, Maureen; Baldwin, Sam F.; Wiser , Ryan; Brinkman, G.; Denholm, Paul; Arent, Doug; Porro, Gian; Sandor, Debra; Hostick, Donna J.; Milligan, Michael; DeMeo, Ed; Bazilian, Morgan

2014-04-14

337

China's renewable energy development  

Microsoft Academic Search

Purpose – The purpose of this paper is to find some feasible measures to solve the problems faced in China's renewable energy development and promote the industrial development of China's renewable energy. Design\\/methodology\\/approach – The paper summarises the status and studies the problems of China's renewable energy industrial development, and then puts forward some proposals for the industrial development. Findings

Zhongying Wang; Junfeng Li

2009-01-01

338

INFORMATION FOR RENEWABLE ENERGY  

E-print Network

ENHANCING INFORMATION FOR RENEWABLE ENERGY TECHNOLOGY DEPLOYMENT IN BRAZIL, CHINA, AND SOUTH AFRICA UNITEDNATIONSENERGYPROGRAMME #12;#12;Enhancing Information for Renewable Energy Technology Deployment in Brazil, China Piratini, All other photos: ERI, INPE, CRSES #12;Enhancing Information for Renewable Energy Technology

339

Cesium-134 and 137 activities in the central North Pacific Ocean after the Fukushima Dai-ichi nuclear power plant accident  

NASA Astrophysics Data System (ADS)

Surface seawater 134Cs and 137Cs samples were collected in the central and western North Pacific Ocean during the 1.5 yr after the Fukushima Dai-ichi nuclear power plant accident to monitor dispersion patterns of these radioisotopes towards the Hawaiian Islands. In the absence of other recent sources and due to its short half-life only those parts of the Pacific Ocean would have detectable 134Cs that were impacted by Fukushima releases. Between March and May 2011, 134Cs was not detected around the Hawaiian Islands and Guam. Here, most 137Cs activities (1.2-1.5 Bq m-3) were in the range of expected preexisting levels. Some samples north of the Hawaiian Islands (1.6-1.8 Bq m-3) were elevated above the 18-month baseline established in surface seawater in Hawaii indicating that those might carry atmospheric fallout. The 18-month time-series analysis of surface seawater from Hawaii did not reveal any seasonal variability or trends, with an average activity of 1.46 ± 0.06 Bq m-3 (Station Aloha, 17 values). In contrast, samples collected between Japan and Hawaii contained 134Cs activities in the range of 1-4 Bq m-3 and 137Cs levels were about 2-3 times above the preexisting activities. We found that the southern boundary of the Kuroshio and Kuroshio extension currents represented a boundary for radiation dispersion with higher activities detected within and north of the major currents. The radiation plume has not been detected over the past 1.5 yr at the main Hawaiian Islands due to the transport patterns across the Kuroshio and Kuroshio extension currents.

Kameník, J.; Dulaiova, H.; Buesseler, K. O.; Pike, S. M.; Št'astná, K.

2013-03-01

340

Impact of Fukushima-derived radiocesium in the western North Pacific Ocean about ten months after the Fukushima Dai-ichi nuclear power plant accident.  

PubMed

We measured vertical distributions of radiocesium ((134)Cs and (137)Cs) at stations along the 149°E meridian in the western North Pacific during winter 2012, about ten months after the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accident. The Fukushima-derived (134)Cs activity concentration and water-column inventory were largest in the transition region between 35 and 40°N approximately due to the directed discharge of the contaminated water from the FNPP1. The bomb-derived (137)Cs activity concentration just before the FNPP1 accident was derived from the excess (137)Cs activity concentration relative to the (134)Cs activity concentration. The water-column inventory of the bomb-derived (137)Cs was largest in the subtropical region south of 35°N, which implies that the Fukushima-derived (134)Cs will also be transported from the transition region to the subtropical region in the coming decades. Mean values of the water-column inventories decay-corrected for the Fukushima-derived (134)Cs and the bomb-derived (137)Cs were estimated to be 1020 ± 80 and 820 ± 120 Bq m(-2), respectively, suggesting that in winter 2012 the impact of the FNPP1 accident in the western North Pacific Ocean was nearly the same as that of nuclear weapons testing. Relationship between the water-column inventory and the activity concentration in surface water for the radiocesium is essential information for future evaluation of the total amount of Fukushima-derived radiocesium released into the North Pacific Ocean. PMID:25461523

Kumamoto, Yuichiro; Aoyama, Michio; Hamajima, Yasunori; Murata, Akihiko; Kawano, Takeshi

2015-02-01

341

Earth's Oceans  

NSDL National Science Digital Library

This resource guide from the Middle School Portal 2 project, written specifically for teachers, provides links to exemplary resources including background information, lessons, career information, and related national science education standards. This guide focuses on the oceans as a part of the Earth system: the link between oceans and climate; tsunamis; life science concepts such as ocean ecosystems, food webs, and biodiversity; real data â both sources of and projects that use real data; and related careers. There is also a section on the misconceptions commonly surrounding ocean concepts and finally the National Science Education Standards that these resource connect to. So even though you might not teach a unit called oceans, the oceans can be used as a context within an existing unit, such as ecosystems, energy transfer, systems thinking, or methods in science.

Lightle, Kimberly; Fries-Gaither, Jessica

2009-10-01

342

Ocean Planet  

NSDL National Science Digital Library

_Ocean Planet_ is a Smithsonian Institution Traveling Exhibition that now has a companion on-line exhibition. It covers varied topics associated with the ocean, such as the science of the ocean, the animals, people, and communities who use the ocean, and pollution problems currently endangering ocean resources. The exhibit features all of the text and a good portion of the images from the traveling exhibit. The curator of this exhibit has put together six special interest tours including Biodiversity, Women and the Sea, and Pollution. Users can also build their own special tour from a list of key words. The current list contains only four words, but is expected to grow in the future. Visitors can also consult a comprehensive list of educational materials and ocean resources.

343

Wavelet Spectrum Analysis and Ocean Wind Waves  

E-print Network

Wavelet Spectrum Analysis and Ocean Wind Waves Paul C. Liu Abstract. Wavelet spectrum analysis is applied to a set of measured ocean wind waves data collected during the 1990 SWADE {Surface Wave Dynamics] adopted the works of John W. Tukey [22] and introduced the power spectrum analysis to ocean wave studies

344

Ocean thermal plant  

NASA Technical Reports Server (NTRS)

Modular Ocean Thermal-Energy Conversion (OTEC) plant permits vital component research and testing and serves as operational generator for 100 megawatts of electric power. Construction permits evaporators and condensers to be tested in same environment in which they will be used, and could result in design specifications for most efficient plant facilities in future.

Owens, L. J.

1979-01-01

345

OTEC ocean system development  

NASA Astrophysics Data System (ADS)

Ocean systems embodied in OTEC floating power plant designs include features beyond present offshore practice. Design aspects of the platform, cold water pipe and mooring systems have been investigated in Government sponsored research programs to establish a technology base for commercial plant development. Recent laboratory tests have provided validation of concepts and design tools, and future programs will include large scale demonstration tests.

Hove, D.; McGuinness, T.

1981-12-01

346

OTEC ocean system development  

SciTech Connect

Ocean systems embodied in OTEC floating power plant designs include features beyond present offshore practice. Design aspects of the platform, cold water pipe and mooring systems have been investigated in Government sponsored research programs to establish a technology base for commercial plant development. Recent laboratory tests have provided validation of concepts and design tools, and future programs will include large scale demonstration tests.

Hove, D. (Dynamics Technology, Inc., El Segundo, CA); McGuinness, T. (NOAA, OTEC Program Management Office, Rockville, MD)

1981-01-01

347

Ocean FEST  

NSDL National Science Digital Library

Ocean FEST family science nights feature hands-on, standards-based, ocean-themed science activities for students in grades 3-6 and their families. Our goals are to: (1) educate participants about ocean and earth science issues that are relevant to their communities; and (2) inspire students - especially those from underrepresented groups - to pursue careers in the ocean and earth sciences. The teacher guide provides all information (including supply lists) necessary to perform these activities in a classroom. Some supply funding is available--see Teacher Resources section for more information.

Bruno, Barbara; Hsia, Michelle; Wiener, Carlie

348

COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM  

E-print Network

COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM OVERALL PROGRAM GUIDEBOOK Fourth Edition Manager Renewable Energy Office G. William Pennington Acting Deputy Director Efficiency and Renewable of how the Energy Commission's Renewable Energy Program is administered and outlines terms

349

Optimal Renewable Resources Mix for Distribution System Energy Loss Minimization  

Microsoft Academic Search

It is widely accepted that renewable energy sources are the key to a sustainable energy supply infrastructure since they are both inexhaustible and nonpolluting. A number of renewable energy technologies are now commercially available, the most notable being wind power, photovoltaic, solar thermal systems, biomass, and various forms of hydraulic power. In this paper, a methodology has been proposed for

Y. M. Atwa; E. F. El-Saadany; M. M. A. Salama; R. Seethapathy

2010-01-01

350

Eastern Renewable Generation Integration Study Solar Dataset (Presentation)  

SciTech Connect

The National Renewable Energy Laboratory produced solar power production data for the Eastern Renewable Generation Integration Study (ERGIS) including "real time" 5-minute interval data, "four hour ahead forecast" 60-minute interval data, and "day-ahead forecast" 60-minute interval data for the year 2006. This presentation provides a brief overview of the three solar power datasets.

Hummon, M.

2014-04-01

351

An agglomerative hierarchical clustering tool for renewable energy sources  

Microsoft Academic Search

The wind power based energy generation technologies are intensively studied in renewable energy generation issues since last century. The main demands directed to a renewable energy source are being reliable, sustainable and low-cost. Several studies are performed to increase the efficiency of an installed wind power plants. The preliminary analyses such as geographical structures, climate conditions, and land topography should

Ilhami Colak; Ersan Kabalci; Mehmet Yesilbudak; H. Ibrahim Bulbul

2011-01-01

352

Using Renewable Energy to Pump Water  

E-print Network

Using Renewable Energy to Pump Water Juan Enciso and Michael Mecke* Wind power Wind is often used as an energy source to operate pumps and supply water to livestock. Because of the large amount of water needed for crops, wind power is rarely used... renewable energy sources ? such as solar or wind power ? for your home, for drip irrigation or for livestock water wells. Wind and solar energy can be excellent options in remote areas where the costs of extending transmission lines are high. Extending...

Enciso, J.; Mecke, M.

353

Renewable energy annual 1995  

SciTech Connect

The Renewable Energy Annual 1995 is the first in an expected series of annual reports the Energy Information Administration (EIA) intends to publish to provide a comprehensive assessment of renewable energy. This report presents the following information on the history, status, and prospects of renewable energy data: estimates of renewable resources; characterizations of renewable energy technologies; descriptions of industry infrastructures for individual technologies; evaluations of current market status; and assessments of near-term prospects for market growth. An international section is included, as well as two feature articles that discuss issues of importance for renewable energy as a whole. The report also contains a number of technical appendices and a glossary. The renewable energy sources included are biomass (wood), municipal solid waste, biomass-derived liquid fuels, geothermal, wind, and solar and photovoltaic.

NONE

1995-12-01

354

Renewable Energy Action Team-Generation Tracking For Renewable Projects Revised 6/17/13  

E-print Network

.ON Climate & Renewables North America 20 Solar PV 14 American Solar Los Angeles Greenworks/Silverado Power 35. 140 Solar PV 31 Blackwells Solar Park Kern Unknown 20 Solar PV 32 Blythe Solar Power Generation Gestamp Asetym North America 7 Solar PV 47 Central Antelope Dry Ranch B Los Angeles Silverado Power 6

355

Marine and Hydrokinetic Renewable Energy Technologies: Potential Navigational Impacts and Mitigation Measures  

SciTech Connect

On April 15, 2008, the Department of Energy (DOE) issued a Funding Opportunity Announcement for Advanced Water Power Projects which included a Topic Area for Marine and Hydrokinetic Renewable Energy Market Acceleration Projects. Within this Topic Area, DOE identified potential navigational impacts of marine and hydrokinetic renewable energy technologies and measures to prevent adverse impacts on navigation as a sub-topic area. DOE defines marine and hydrokinetic technologies as those capable of utilizing one or more of the following resource categories for energy generation: ocean waves; tides or ocean currents; free flowing water in rivers or streams; and energy generation from the differentials in ocean temperature. PCCI was awarded Cooperative Agreement DE-FC36-08GO18177 from the DOE to identify the potential navigational impacts and mitigation measures for marine hydrokinetic technologies, as summarized herein. The contract also required cooperation with the U.S. Coast Guard (USCG) and two recipients of awards (Pacific Energy Ventures and reVision) in a sub-topic area to develop a protocol to identify streamlined, best-siting practices. Over the period of this contract, PCCI and our sub-consultants, David Basco, Ph.D., and Neil Rondorf of Science Applications International Corporation, met with USCG headquarters personnel, with U.S. Army Corps of Engineers headquarters and regional personnel, with U.S. Navy regional personnel and other ocean users in order to develop an understanding of existing practices for the identification of navigational impacts that might occur during construction, operation, maintenance, and decommissioning. At these same meetings, “standard” and potential mitigation measures were discussed so that guidance could be prepared for project developers. Concurrently, PCCI reviewed navigation guidance published by the USCG and international community. This report summarizes the results of this effort, provides guidance in the form of a checklist for assessing the navigational impacts of potential marine and hydrokinetic projects, and provides guidance for improving the existing navigational guidance promulgated by the USCG in Navigation Vessel Inspection Circular 02 07. At the request of the USCG, our checklist and mitigation guidance was written in a generic nature so that it could be equally applied to offshore wind projects. PCCI teleconferenced on a monthly basis with DOE, Pacific Energy Ventures and reVision in order to share information and review work products. Although the focus of our effort was on marine and hydrokinetic technologies, as defined above, this effort drew upon earlier work by the USCG on offshore wind renewable energy installations. The guidance provided herein can be applied equally to marine and hydrokinetic technologies and to offshore wind, which are collectively referred to by the USCG as Renewable Energy Installations.

Cool, Richard, M.; Hudon, Thomas, J.; Basco, David, R.; Rondorf, Neil, E.

2009-12-10

356

Ocean Update  

NSDL National Science Digital Library

SeaWeb's monthly newsletter summarizing recent news, views and events concerning marine and coastal environments and wildlife. Site also features The Ocean Report, a series of ninety-second radio slots highlighting a wide range of news and issues relating to the ocean, and Give Swordfish a Break, a successful campaign that helped restore depleted North Atlantic swordfish populations.

357

and Ocean  

Microsoft Academic Search

A theory of electromagnetic induction within a hemispherical conducting sheet over a nonconductor and underlain by a concentric sphere of uniform conductivity is de- scribed. The theory is applied to the induction by Sq in a vast ocean. It is concluded that the electric currents induced in the ocean are considerably smaller than those estimated for a single hemispherical sheet,

TSUNEJI IIKITAKE

1961-01-01

358

Ocean Optics  

NSDL National Science Digital Library

This NASA website is part of Visible Earth, and contains a searchable directory of images of the Earth. This section contains images pertaining to ocean optics, such as ocean color, turbidity and reflectance. Each image is available in a variety of resolutions and sizes, with a brief description, credit, date, and the photographing satellite.

NASA

359

Ocean Temperatures  

NSDL National Science Digital Library

Bermuda may be known as a luxurious vacation destination, but it also houses one of the world's leading institutes for ocean studies, called BIOS. Dr. Tony Knap explains how climate change is causing ocean temperatures to rise, and what impacts it may bring around the world. "Changing Planet" is produced in partnership with the National Science Foundation.

Learn, Nbc

2010-10-07

360

Ocean Temperatures  

NSDL National Science Digital Library

In this lesson students discover that measurements from space can tell us the temperature of the ocean, both on an annual average and as measured on any given date. For the annual average the highest ocean temperatures are near the equator, and drop as one moves either northward or southward from the equator. Students will graph each temperature value as a function of latitude and write a linear equation that best fits the points on their graph. They can choose as data points any point at that approximate latitude because the temperature is not uniform for a certain latitude - some areas are hotter and some are cooler. They can also look at today's ocean temperatures via the link provided to see how the seasons affect whether the northern or southern oceans are warmer. Students will take ocean temperature data from a map and plot temperature versus angle from the equator.

2007-12-12

361

Ocean Water: Density  

NSDL National Science Digital Library

In regions throughout the world oceans, water moves vertically to or down away from the surface and is set in motion by atmospheric winds, salinity and temperature differences. Cold water is much denser than warm and seawater has a higher density that fresh water and will sink below the less dense layer of water. Furthermore, vertical mixing powered by atmospheric winds can affect stratification and the rate of growth of the surface boundary layer. This lab activity is a simulation of the processes that create density stratification in ocean environments. It exposes students to concepts of temperature, salinity and wind and the role each plays in the development of water stratification.

Robinson, Judy

362

National Renewable Energy Laboratory: Learning About Renewable Energy  

NSDL National Science Digital Library

This site describes National Renewable Energy Laboratory (NREL) research into renewable energy technologies and provides information on energy efficiency and various applications of renewable energy. Topics include the major categories of renewable energy (biomass, geothermal, solar, and wind); how renewable energy technologies can be used by consumers and providers; and how renewable energy can be stored and delivered. There is also information on advanced transportation technologies and links to a variety of educational resources for students about renewable energy sources and technologies.

363

Comprehensive Ocean Drilling  

E-print Network

Comprehensive Ocean Drilling Bibliography containing citations related to the Deep Sea Drilling Project, Ocean Drilling Program, Integrated Ocean Drilling Program, and International Ocean Discovery Program Last updated: May 2014 #12;Comprehensive Bibliography Comprehensive Ocean Drilling Bibliography

364

Public comments on the proposed 10 CFR Part 51 rule for renewal of nuclear power plant operating licenses and supporting documents: Review of concerns and NRC staff response. Volume 1  

SciTech Connect

This report documents the Nuclear Regulatory Commission (NRC) staff review of public comments provided in response to the NRC`s proposed amendments to 10 Code of Federal Regulations (CFR) Part 51, which establish new requirements for the environmental review of applications for the renewal of operating licenses of nuclear power plants. The public comments include those submitted in writing, as well as those provided at public meetings that were held with other Federal agencies, State agencies, nuclear industry representatives, public interest groups, and the general public. This report also contains the NRC staff response to the various concerns raised, and highlights the changes made to the final rule and the supporting documents in response to these concerns.

NONE

1996-05-01

365

The renewable chemicals industry.  

PubMed

The possibilities for establishing a renewable chemicals industry featuring renewable resources as the dominant feedstock rather than fossil resources are discussed in this Concept. Such use of biomass can potentially be interesting from both an economical and ecological perspective. Simple and educational tools are introduced to allow initial estimates of which chemical processes could be viable. Specifically, fossil and renewables value chains are used to indicate where renewable feedstocks can be optimally valorized. Additionally, C factors are introduced that specify the amount of CO2 produced per kilogram of desired product to illustrate in which processes the use of renewable resources lead to the most substantial reduction of CO2 emissions. The steps towards a renewable chemicals industry will most likely involve intimate integration of biocatalytic and conventional catalytic processes to arrive at cost-competitive and environmentally friendly processes. PMID:18605090

Christensen, Claus Hviid; Rass-Hansen, Jeppe; Marsden, Charlotte C; Taarning, Esben; Egeblad, Kresten

2008-01-01

366

Differentiation Self-renewal  

E-print Network

Off state Ras Ras­GAP PI3K ERK1 ERK2 Differentiation SC1 SC1 Self-renewal Ras On state GDP GTP N NN, which promotes stem-cell self-renewal. Activated Ras also switches on the enzymes ERK1 and ERK2, which-cell renewal via the PI3K pathway. SC1 also inhibits ERK1 and ERK2, thus blocking stem-cell differentiation. PI

Glyde, Henry R.

367

Acid Ocean  

NSDL National Science Digital Library

The I2I-Acid Ocean virtual lab is an e-learning activity where students become virtual scientists studying the impact of ocean acidification on sea urchin larval growth. Students recreate a real, up-to-date climate change experiment. They also learn important general scientific principles, such as the importance of sample size and numbers of replicates, and discuss what this research into a specific impact of climate change may mean for the future of our oceans. There is a French translation available.

368

Detailed source term estimation of atmospheric release during the Fukushima Dai-ichi nuclear power plant accident by coupling atmospheric and oceanic dispersion models  

NASA Astrophysics Data System (ADS)

Temporal variations of release amounts of radionuclides during the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accident and their dispersion process are essential to evaluate the environmental impacts and resultant radiological doses to the public. Here, we estimated a detailed time trend of atmospheric releases during the accident by combining environmental monitoring data and coupling atmospheric and oceanic dispersion simulations by WSPEEDI-II (Worldwide version of System for Prediction of Environmental Emergency Dose Information) and SEA-GEARN developed by the authors. New schemes for wet, dry, and fog depositions of radioactive iodine gas (I2 and CH3I) and other particles (I-131, Te-132, Cs-137, and Cs-134) were incorporated into WSPEEDI-II. The deposition calculated by WSPEEDI-II was used as input data of ocean dispersion calculations by SEA-GEARN. The reverse estimation method based on the simulation by both models assuming unit release rate (1 Bq h-1) was adopted to estimate the source term at the FNPP1 using air dose rate, and air sea surface concentrations. The results suggested that the major release of radionuclides from the FNPP1 occurred in the following periods during March 2011: afternoon on the 12th when the venting and hydrogen explosion occurred at Unit 1, morning on the 13th after the venting event at Unit 3, midnight on the 14th when several openings of SRV (steam relief valve) were conducted at Unit 2, morning and night on the 15th, and morning on the 16th. The modified WSPEEDI-II using the newly estimated source term well reproduced local and regional patterns of air dose rate and surface deposition of I-131 and Cs-137 obtained by airborne observations. Our dispersion simulations also revealed that the highest radioactive contamination areas around FNPP1 were created from 15th to 16th March by complicated interactions among rainfall (wet deposition), plume movements, and phase properties (gas or particle) of I-131 and release rates associated with reactor pressure variations in Units 2 and 3.

Katata, Genki; Chino, Masamichi; Terada, Hiroaki; Kobayashi, Takuya; Ota, Masakazu; Nagai, Haruyasu; Kajino, Mizuo

2014-05-01

369

Renewable Energy Research Laboratory, UMass Amherst www.ceere.org/rerl  

E-print Network

Renewable Energy Research Laboratory, UMass Amherst www.ceere.org/rerl 1 Small Wind PowerSmall Wind Sally Wright, PE Staff Engineer Renewable Energy Research Laboratory University of Massachusetts, Amherst A Presentation to Co-op Power Sally Wright, PE Staff Engineer Renewable Energy Research Laboratory

Massachusetts at Amherst, University of

370

Decentralised Energy Management System with comprehension of fluctuated renewable energy resources  

Microsoft Academic Search

Under integration of renewable energy resources many still understand only proof procedures to connect new power plant to public grid. The existing management systems aim to observe electrical and thermal grid condition. In defined situations renewable power plants will be turned off. Another huge problem is the natural fluctuation of direct renewable energy converter such as photovoltaic and wind turbine.

A. Dowrueng; J. zum Hingst; A. Mbuy; E.-A. Wehrmann; H.-P. Beck

2009-01-01

371

National Renewable Energy Laboratory  

NSDL National Science Digital Library

The National Renewable Energy Lab is the U.S. Department of Energy's premier laboratory for renewable energy research and development and a leading laboratory for energy efficiency research and development. The web site provides access to a large array of information that targets many different audiences. There are educational links and classroom activities and projects suited for audiences from primary education through college-level. Other features include information about different forms of energy, databases on renewable energy production, an extensive photo gallery, and information on current research and applications in energy efficiency and renewable energy.

2002-04-01

372

Renewable Energy Trust  

NSDL National Science Digital Library

The Renewable Energy Trust, which was created by the Massachusetts Legislature in 1998, is administered by the Massachusetts Technology Collaborative, a statewide quasi-public economic development agency. The Collaborative "seeks to maximize environmental and economic benefits for the CommonwealthâÂÂs citizens by pioneering and promoting clean energy technologies and fostering the emergence of sustainable markets for electricity generated from renewable sources." The website provides information on the Trust's various programs and activities. The Energy Information section of the website provides more information about renewable energy and suggestions for what energy users can do as well as resources for teaching students about renewable energy and global warming.

373

75 FR 19990 - Notice of Availability of the Draft Environmental Impact Statement for the NextLight Renewable...  

Federal Register 2010, 2011, 2012, 2013

...NextLight Renewable Power, LLC applied to the...lands to construct a solar photovoltaic (PV) plant...renewable energy. The solar field and infrastructure...and overhead electrical power collection system...design engineering, efficiency, reliability,...

2010-04-16

374

Renewable Energy Living Lab: Smart Solar  

NSDL National Science Digital Library

Students use real-world data to evaluate whether solar power is a viable energy alternative for several cities in different parts of the U.S. Working in small groups, they examine maps and make calculations using NREL/US DOE data from the online Renewable Energy Living Lab. In this exercise, students analyze cost and availability for solar power, and come to conclusions about whether solar power is a good solution for four different locations.

Civil And Environmental Engineering Department

375

Oceanic Transport  

NASA Technical Reports Server (NTRS)

The importance of large-scale ocean movements to the moderation of Global Temperature is discussed. The observational requirements of physical oceanography are discussed. Satellite-based oceanographic observing systems are seen as central to oceanography in 1990's.

Chase, R.; Mcgoldrick, L.

1984-01-01

376

Future Ocean  

NSDL National Science Digital Library

The Great Rift Valley is a huge gash cut into East Africa, extending 3000 kilometers from Malawi in southern Africa to the Red Sea in the north. Beneath the Great Rift Valley, the next new ocean on Earth may be forming. This radio broadcast ptovides interviews with geologists who are studying this part of Africa to learn how new seas appear. The tectonic plates that form the continents drift continuously about the globe as new oceans open up and old ones get closed down. But, occasionally, continents themselves split apart and new ocean floor forms from volcanoes that erupt in the the ensuing rift. It is this event that geologists believe they are witnessing in East Africa. The broadcast discusses Project EAGLE (Ethiopia Afar Geoscientific Lithospheric Experiment), an investigation into how a continental rift turns into a new ocean. The broadcast is 30 minutes in length.

377

The SURA Coastal Ocean Observing and Prediction (SCOOP) Program: Adapting Web 2.0 technologies to power next generation science  

NASA Astrophysics Data System (ADS)

The Web 2.0 has helped globalize the economy and change social interactions, but the full impact on coastal sciences has yet to be realized. The SCOOP program (www.OpenIOOS.org/about/sura.html), an initiative of the Coastal Research Committee of the Southeastern Universities Research Association (SURA), has been using Web 2.0 technologies to create infrastructure for a multi-disciplinary Distributed Coastal Laboratory (DCL). In the spirit of the Web 2.0, SCOOP strives to provide an open-access virtual facility where "virtual visiting" scientists can log in, perform experiments (e.g., evaluate new wetting/drying algorithms in several different inundation models), potentially contribute to the assembly of resources (e.g., leave their algorithms for others), and then move on. The SCOOP prototype has focused on storm surge and waves (the initial science focus), and integrates a real-time data network to evaluate the predictions. The multi-purpose SCOOP components support a sensor-web initiative (www.OOSTethys.org) that is co-led by SURA. SCOOP also includes portals with real-time visualization, workflow configuration and decision-tool prototypes (www.OpenIOOS.org), powered by distributed computing resources from multiple universities across the nation (www.sura.org/SURAgrid). Based on our experience, we propose three key ingredients for initiatives to have the biggest impact on coastal science: (1) standards, (2) working prototypes and (3) communities of interest. We strongly endorse the Open Geospatial Consortium - a geospatial analog of the World Wide Web consortium - and other international consensus-standards bodies that engage government, private sector and academic involvement. But these standards are often highly complex, which can be an impediment to their use. We have overcome such hurdles with the second key ingredient: a focused working prototype. The prototype should include guides and resources that make it easy for others to apply, test, and revise the prototype, all without need to understand the standards in their overwhelming complexity. In addition, the prototype should support direct involvement of the third key ingredient: communities of interest that assess functional relevance. We expect that any two of these ingredients alone, without the third, will severely limit applicability and impact of any initiative.

Bogden, P.; Partners, S.

2008-12-01

378

Ocean Books  

NSDL National Science Digital Library

This OLogy reference list has 12 kid-friendly books on marine biology. A short description is given for each title, along with author name and publisher. The list includes illustrated looks at ocean habitats, marine life, and more, hands-on activities and experiments that build kids' scientific observation skills along with their marine biology knowledge and puzzle and coloring books that offer creative ways to introduce kids to ocean life.

379

Toward a Regional Geography of Renewable Electrical Energy Resources.  

ERIC Educational Resources Information Center

It is postulated that many types of renewable energy resources, like fossil fuels, are amenable to regional availability analysis. Among these are hydropower, geothermal, ocean temperature gradient, wind, and direct solar energy. A review of the spatial attributes of each of these types reveals areas of the United States that contain comparative…

Pryde, Philip R.

380

IPCC Special Report on Renewable Energy Sources and Climate Change  

E-print Network

Chapter 4 Geothermal Energy Chapter 5 Hydropower Chapter 6 Ocean Energy Chapter 7 Wind Energy Chapter 8#12;IPCC Special Report on Renewable Energy Sources and Climate Change Mitigation Edited by Ottmar Edenhofer CoChair Working Group III Potsdam Institute for Climate Impact Research (PIK) Ramón

Kammen, Daniel M.

381

The Green Power Network: Green Power government information clearinghouse  

NSDL National Science Digital Library

This site contains Green Power information from the Energy Efficiency and Renewable Energy Clearinghouse of the U.S. Department of Energy. The Green Power Network exists to provide "news and information on green power providers." The site's information is searchable by state and shows different markets for green power (utility green pricing, green power marketing, and renewable energy certificates).

2008-08-26

382

The effect of islands’ interconnection to the mainland system on the development of renewable energy sources in the Greek power sector  

Microsoft Academic Search

The capacity expansion planning is a crucial process taking into account multiple aspects and various parameters of the examined power sector in order to optimally satisfy the future electricity demand. In the case of Greece, the long-term energy planning of the electricity supply sector faces a lot of challenges deriving from the peculiarities and geomorphology of the country mainly referring

Paraskevas N. Georgiou; George Mavrotas; Danae Diakoulaki

2011-01-01

383

Renewable Energy News  

NSDL National Science Digital Library

Renewable Energy News is a comprehensive source which provides world-wide updates on all aspects of renewable energies. The site provides links to organizations and web directories of related products and information. The site is organized in a user-friendly way with issues organized by topic or region. Science, technology, economy energy, and nuclear review are highlighted areas of news.

2007-09-17

384

Renewing Urban Schools.  

ERIC Educational Resources Information Center

This paper describes an approach to urban renewal, called the Multi-Function Polis (MFP), which emphasizes education as a key factor in a renewal process that includes development of 21st century industries such as information technology, telecommunications, and environmental management. Focusing on Adelaide, Australia, as an example, the paper…

Mayfield, John

385

Renewable Electricity Futures Study  

E-print Network

Renewable Energy Laboratory; pp. 6-1 ­ 6-58. Chapter 7. Geothermal Energy Technologies Augustine, C.; Denholm, P.; Heath, G.; Mai, T.; Tegen, S.; Young. K. (2012). "Geothermal Energy Technologies," Chapter 7.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance

386

National Renewable Energy Laboratory  

E-print Network

Innovation for Our Energy Future Sponsorship Format Black Color:Solid Black Vertical Format-A Black Vertical Format-B Black National Renewable Energy Laboratory Innovation for Our Energy Future National Renewable, a market conservatively estimated at $125 million per year. The UAWS is the culmination of more than 10

387

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in an Union of Concerned Scientists webinar on June 12, 2012.

Hand, M.; Mai, T.

2012-08-01

388

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It is being presented at the Utility Variable-Generation Integration Group Fall Technical Workshop on October 24, 2012.

Hand, M.

2012-10-01

389

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.

Hand, M. M.

2012-08-01

390

Wave Energy Conversion Overview and it's Renewable Energy Potential for the Oil and Gas Industry  

E-print Network

Ocean energy conversion has been of interest for many years. Recent developments such as concern over global warming have renewed interest in the topic. Part II provides an overview of the energy density found in ocean waves and how it is calculated...

Pastor, J.; Liu, Y.; Dou, Y.

2014-01-01

391

A SIGNAL SYNTHESIS PROCEDURE DESIGNED FOR DISCREET OCEAN ACOUSTIC TOMOGRAPHY  

E-print Network

A SIGNAL SYNTHESIS PROCEDURE DESIGNED FOR DISCREET OCEAN ACOUSTIC TOMOGRAPHY Lionel Cros, C To assess seabed geoacoustic properties, Ocean Acoustic Tomogra- phy (OAT) uses powerful active emissions Ocean Acoustic Tomography (OAT) is a powerful inversion tool that allows a rapid determination

Boyer, Edmond

392

Renewable Electricity Futures: Exploration of a U.S. Grid with 80% Renewable Electricity  

NASA Astrophysics Data System (ADS)

Renewable Electricity Futures is an initial investigation of the extent to which renewable energy supply can meet the electricity demands of the contiguous United States over the next several decades. This study explores the implications and challenges of very high renewable electricity generation levels: from 30% up to 90% (focusing on 80%) of all U.S. electricity generation from renewable technologies in 2050. At such high levels of renewable electricity penetration, the unique characteristics of some renewable resources, specifically geographical distribution and variability and un-certainty in output, pose challenges to the operability of the nation's electric system. The study focuses on key technical implications of this environment from a national perspective, exploring whether the U.S. power system can supply electricity to meet customer demand on an hourly basis with high levels of renewable electricity, including variable wind and solar generation. The study also identifies some of the potential economic, environmental, and social implications of deploying and integrating high levels of renewable electricity in the U.S. The full report and associated supporting information is available at: http://www.nrel.gov/analysis/refutures/.

Mai, Trieu

2013-04-01

393

EDITORIAL: Renewing energy technology Renewing energy technology  

Microsoft Academic Search

Renewable energy is now a mainstream concern among businesses and governments across the world, and could be considered a characteristic preoccupation of our time. It is interesting to note that many of the energy technologies currently being developed date back to very different eras, and even predate the industrial revolution. The fuel cell was first invented as long ago as

Anna Demming

2011-01-01

394

Super capacitor applications for renewable energy generation and control in smart grids  

Microsoft Academic Search

In the renewable energy generation, maximum power point tracking (MPPT) is always expected. However, the scale of integration of renewable energy sources into the existing electric power networks is not infinitive mainly due to the fluctuation of power flow from these sources. In order to ensure power quality in particular AC voltage quality in case of line impedance being significantly

Yonghua Cheng; DC DC; DC AC

2011-01-01

395

COMMISSION REPORT RENEWABLE ENERGY PROGRAM  

E-print Network

COMMISSION REPORT RENEWABLE ENERGY PROGRAM 2011 ANNUAL REPORT Authors Lorraine Gonzalez Madeleine Meade Project Manager Tony Gonçalves Office Manager Renewable Energy directive to report annually on the results of the Renewable Energy Program's activities and status

396

Assessment of Energy Production Potential from Ocean Currents along the United States Coastline  

SciTech Connect

Increasing energy consumption and depleting reserves of fossil fuels have resulted in growing interest in alternative renewable energy from the ocean. Ocean currents are an alternative source of clean energy due to their inherent reliability, persistence and sustainability. General ocean circulations exist in the form of large rotating ocean gyres, and feature extremely rapid current flow in the western boundaries due to the Coriolis Effect. The Gulf Stream system is formed by the western boundary current of the North Atlantic Ocean that flows along the east coastline of the United States, and therefore is of particular interest as a potential energy resource for the United States. This project created a national database of ocean current energy resources to help advance awareness and market penetration in ocean current energy resource assessment. The database, consisting of joint velocity magnitude and direction probability histograms, was created from data created by seven years of numerical model simulations. The accuracy of the database was evaluated by ORNL?s independent validation effort documented in a separate report. Estimates of the total theoretical power resource contained in the ocean currents were calculated utilizing two separate approaches. Firstly, the theoretical energy balance in the Gulf Stream system was examined using the two-dimensional ocean circulation equations based on the assumptions of the Stommel model for subtropical gyres with the quasi-geostrophic balance between pressure gradient, Coriolis force, wind stress and friction driving the circulation. Parameters including water depth, natural dissipation rate and wind stress are calibrated in the model so that the model can reproduce reasonable flow properties including volume flux and energy flux. To represent flow dissipation due to turbines additional turbine drag coefficient is formulated and included in the model. Secondly, to determine the reasonableness of the total power estimates from the Stommel model and to help determine the size and capacity of arrays necessary to extract the maximum theoretical power, further estimates of the available power based on the distribution of the kinetic power density in the undisturbed flow was completed. This used estimates of the device spacing and scaling to sum up the total power that the devices would produce. The analysis has shown that considering extraction over a region comprised of the Florida Current portion of the Gulf Stream system, the average power dissipated ranges between 4-6 GW with a mean around 5.1 GW. This corresponds to an average of approximately 45 TWh/yr. However, if the extraction area comprises the entire portion of the Gulf Stream within 200 miles of the US coastline from Florida to North Carolina, the average power dissipated becomes 18.6 GW or 163 TWh/yr. A web based GIS interface, http://www.oceancurrentpower.gatech.edu/, was developed for dissemination of the data. The website includes GIS layers of monthly and yearly mean ocean current velocity and power density for ocean currents along the entire coastline of the United States, as well as joint and marginal probability histograms for current velocities at a horizontal resolution of 4-7 km with 10-25 bins over depth. Various tools are provided for viewing, identifying, filtering and downloading the data.

Haas, Kevin

2013-09-15

397

The Green Power Network: Buying Green Power  

NSDL National Science Digital Library

The Green Power Network (GPN), operated and maintained by the National Renewable Energy Laboratory for the U.S. Department of Energy, provides news and information on green power markets and related activities. Here, they supply a great tool for discovering green power availability throughout the United States. Clicking on any state will provide visitors with any green power including utility green pricing programs, retail green power products offered in competitive utility markets, and renewable energy certificate products (REC) sold separate from electricity. This will be a useful tool for instructors or students interested in renewable energy technologies.

2008-10-21

398

Bidding strategies for renewable energy generation with non stationary statistics  

E-print Network

Bidding strategies for renewable energy generation with non stationary statistics A. Giannitrapani to the integration of renewable energy sources into the electricity grid. This paper studies the problem of optimizing energy bids for a photovoltaic (PV) power producer taking part into a competitive electricity

Giannitrapani, Antonello

399

Scoping technology scenarios for a 100% Renewable Energy Rotorua  

Microsoft Academic Search

There is a move towards the use of renewable energy internationally in particular in Europe. In the countries which have been successful, like Denmark and Germany, the increasing use of renewable energy has been through a multi-resource approach. In Denmark the development has happened with an increase in energy efficiency, more use of bioenergy, more use of wind power, more

J. Collins; Per S. Nielsen

400

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Tronox Facility in Savannah, Georgia. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Tronox Facility site in Savannah, Georgia, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Kiatreungwattana, K.; Geiger, J.; Healey, V.; Mosey, G.

2013-03-01

401

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Brisbane Baylands Brownfield Site in Brisbane, California. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Brisbane Baylands site in Brisbane, California, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Salasovich, J.; Geiger, J.; Healey, V.; Mosey, G.

2013-04-01

402

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Price Landfill Site in Pleasantville, New Jersey. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Price Landfill site in Pleasantville, New Jersey, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Salasovich, J.; Geiger, J.; Mosey, G.; Healey, V.

2013-05-01

403

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Crazy Horse Landfill Site in Salinas, California. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Crazy Horse Landfill site in Salinas, California, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) was contacted to provide technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, operation and maintenance requirements, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Stoltenberg, B.; Konz, C.; Mosey, G.

2013-03-01

404

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Kerr McGee Site in Columbus, Mississippi. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Kerr McGee site in Columbus, Mississippi, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Simon, J.; Mosey, G.

2013-01-01

405

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Peru Mill Industrial Park in the City of Deming, New Mexico. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Peru Mill Industrial Park site in the City of Deming, New Mexico, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Kiatreungwattana, K.; Geiger, J.; Healey, V.; Mosey, G.

2013-04-01

406

Feasibility Study of Economics and Performance of Solar Photovoltaics at the VAG Mine Site in Eden and Lowell, Vermont. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Vermont Asbestos Group (VAG) Mine site in Eden, Vermont, and Lowell, Vermont, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Simon, J.; Mosey, G.

2013-04-01

407

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Former Fort Ord Army Base Site in Marina, California. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Fort Ord Army Base (FOAB) site in Marina, California, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Stoltenberg, B.; Konz, C.; Mosey, G.

2013-05-01

408

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Chino Mine in Silver City, New Mexico. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Chino Mine site in Silver City, New Mexico, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Kiatreungwattana, K.; Geiger, J.; Healey, V.; Mosey, G.

2013-04-01

409

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Tower Road Site in Aurora, Colorado. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Tower Road site in Aurora, Colorado, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Van Geet, O.; Mosey, G.

2013-03-01

410

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Former Chicago, Milwaukee, and St. Paul Rail Yard Company Site in Perry, Iowa. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Chicago, Milwaukee & St. Paul Rail Yard Company site in Perry, Iowa, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Salasovich, J.; Geiger, J.; Healey, V.; Mosey, G.

2013-03-01

411

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Snohomish County Cathcart Landfill Site in Snohomish County, Washington. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Snohomish County Cathcart Landfill Site in Snohomish County, Washington, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Olis, D.; Salasovich, J.; Mosey, G.; Healey, V.

2013-04-01

412

Ocean Science  

NSDL National Science Digital Library

The European Geosciences Union has been working on a number of open access journals over the past few years, and Ocean Science is just such an endeavor. The intent of the journal is to publish research articles, review papers, and short communications of all stripes. Visitors can sign up for RSS feeds, look over the "General Information" area, and also learn about their submission guidelines. In the "Online Library OS" area, visitors can view recently revised papers, complete issues, special issues, and also search past works by title or author. Also, visitors are welcome to comment on published works and they can also sign up to receive an email subscription to Ocean Science.

413

Ocean Acidification  

NSDL National Science Digital Library

The purpose of the lessons is to teach about ocean acidification, its causes and impacts on marine life especially zooplankton, an essential part of marine food webs. Included in the materials is background information on ocean acidification. There are four different activities included in this document. To do all four you should plan on at least two 45 minute periods. The activities define and explain the process of acidification as well as its impacts on shelled organism. The materials can be adapted and used for grades 5-6 and adding more indepth information makes it suitable for middle and high school students.

Osis, Vicki

414

Ocean Temperatures  

NSDL National Science Digital Library

In this activity, students are presented with a satellite image of ocean temperature, and examine the map to determine whether ocean temperature is influenced by latitude. Students graph each temperature value as a function of latitude and write a linear equation that best fits the points on their graph. A student worksheet is provided. Summary background information, data and images supporting the activity are available on the Earth Update data site. To complete the activity, students will need to access the Space Update multimedia collection, which is available for download and purchase for use in the classroom.

2012-08-03

415

Center for Energy Efficiency and Renewable Technologies  

NSDL National Science Digital Library

The Center for Energy Efficiency and Renewable Technologies (CEERT) is a nonprofit organization of concerned scientists, environmentalists, public interest advocates and innovative technology companies. CEERT advocates sustainable electric generation policies, clean vehicles, and energy efficiency and conservation. Their web site features the latest topics surrounding sustainable energy including Harnessing CA Solar Power, Reducing Coal Demand Fuels, and Transportation Fuel.

2008-09-09

416

Alternative and Renewable Energy Sources Course Model  

NSDL National Science Digital Library

The Advanced Technology Environmental and Energy Center (ATEEC) has provided this course development model on renewable energy sources including solar energy, wind power, hydropower, fuel cells, biomass, and alternative transportation. Users must download this resource for viewing, which requires a free log-in. There is no cost to download the item.

2011-05-23

417

RENEWABLE ENERGY MARKETS IN DEVELOPING COUNTRIES  

Microsoft Academic Search

Abstract Renewable energy is shifting from the fringe to the mainstream of sustainable development. Past donor efforts achieved modest results but often were not sustained or replicated, which leads now to greater market orientation. Markets for rural household lighting with solar home systems, biogas, and small hydro power have expanded through rural entrepreneurship, government programs, and donor assistance, serving millions

Eric Martinot; Akanksha Chaurey; Debra Lew; Jose Roberto Moreira; Njeri Wamukonya

2002-01-01

418

Synchrophasor Research Enables Renewables and Improves  

E-print Network

Synchrophasor Research Enables Renewables and Improves Grid Reliability Energy Systems Research pose a challenge to power grid reliability. Until PIER research put synchrophasor applications Office PIER Smart Grid Research http://www.energy.ca.gov/research/integratio n/transmission.html October

419

Module 5: Introduction to Renewable Energy  

NSDL National Science Digital Library

Eastern Iowa Community College provides this learning module to teach students about renewable energy on farms, energy storage and distribution, PURPA legislation, and a number of other topics related to agricultural energy. Users can download a zip file in which they will find a syllabus, student handouts, a quiz, and 55 slide PowerPoint presentation.

2013-11-19

420

Renewable energy potential and utilization in Turkey  

Microsoft Academic Search

Renewable energy sources have been important for humans since the beginning of civilisation. For centuries, and in many ways, biomass has been used for heating, and cooking. Many centuries ago, mankind was already utilizing the clearly visible power of water for mechanical drive purposes, as was also the case with wind. Today, water mills are still used in our villages,

Kamil Kaygusuz; Ahmet Sar?

2003-01-01

421

RENEWABLES RESEARCH Boiler Burner Energy System Technology  

E-print Network

RENEWABLES RESEARCH Boiler Burner Energy System Technology (BBEST) for Firetube Boilers PIER, industrial combined heat and power (CHP) boiler burner energy system technology ("BBEST"). Their research (unrecuperated) with an ultra- low nitrous oxide (NOx) boiler burner for firetube boilers. The project goals

422

EDITORIAL: Renewing energy technology Renewing energy technology  

NASA Astrophysics Data System (ADS)

Renewable energy is now a mainstream concern among businesses and governments across the world, and could be considered a characteristic preoccupation of our time. It is interesting to note that many of the energy technologies currently being developed date back to very different eras, and even predate the industrial revolution. The fuel cell was first invented as long ago as 1838 by the Swiss--German chemist Christian Friedrich Schönbein [1], and the idea of harnessing solar power dates back to ancient Greece [2]. The enduring fascination with new means of harnessing energy is no doubt linked to man's innate delight in expending it, whether it be to satisfy the drive of curiosity, or from a hunger for entertainment, or to power automated labour-saving devices. But this must be galvanized by the sustained ability to improve device performance, unearthing original science, and asking new questions, for example regarding the durability of photovoltaic devices [3]. As in so many fields, advances in hydrogen storage technology for fuel cells have benefited significantly from nanotechnology. The idea is that the kinetics of hydrogen uptake and release may be reduced by decreasing the particle size. An understanding of how effective this may be has been hampered by limited knowledge of the way the thermodynamics are affected by atom or molecule cluster size. Detailed calculations of individual atoms in clusters are limited by computational resources as to the number of atoms that can studied, and other innovative approaches that deal with force fields derived by extrapolating the difference between the properties of clusters and bulk matter require labour-intensive modifications when extending such studies to new materials. In [4], researchers in the US use an alternative approach, considering the nanoparticle as having the same crystal structure as the bulk but relaxing the few layers of atoms near the surface. The favourable features of nanostructures for catalysis also recommend them for ethanol fuel cells, as demonstrated in the decoration of SnO2-coated single-walled carbon nanotubes with platinum catalysts by researchers in Canada [5] Interest in solar power received an enormous boost in the early 1990s when Brian O'Regan and Michael Grätzel published work on a new way to maximise the amount of energy harvested by colloidal TiO2 films with the use of a charge-transfer dye [6]. This approach captured attention across the community due to the large current densities, exceptional stability and low cost of the devices. This design has been modified since, using arrays of nanowires, where each nanowire provides a direct pathway to the collection electrode. In [7], researchers in the US investigate how arrays of vertical nanowires with controlled aspect ratios grow in solution, and how the nanowire aspect ratio affects the performance of nanowire-based dye-sensitized solar cells. A collaboration of researchers in China and Australia has considered how the cell performance could be improved by maximising the interface area between the indium-tin-oxide (ITO)-glass electrode and the oxide semiconductor. To this end, they synthesized arrays of ITO nanowires and ITO/TiO2 core-shell nanowires creating a three-dimensional electrode [8]. Quantum dots have also been incorporated into solar cell devices as they have higher extinction coefficients than metal-organic dyes and their size-dependent spectral responses allow them to be tuned to optimize their performance. Until recently, molecular linkers have been required to attach the quantum dots to the electrode, creating a gap between quantum dot and electrode that is thought to diminish cell performance. Researchers in Spain and Japan have applied a new technique that allows the quantum dots to be adsorbed directly onto the electrode, yielding significant improvements to cell efficiency [9]. Organic photovoltaic devices have also attracted considerable interest as a result of their flexibility and the ability to produce them at a low cost in large scales. While maximising cell effici

Demming, Anna

2011-06-01

423

Fukushima and the ocean  

NASA Astrophysics Data System (ADS)

The triple disaster of the March 11, 2011 earthquake, tsunami, and subsequent radiation releases at Fukushima Dai-ichi were unprecedented events for the ocean and society. The earthquake was the fourth largest ever recorded; the tsunami resulted in over 20,000 dead or missing and destroyed entire towns; and the radiation releases from the Fukushima Dai-ichi nuclear power plants created the largest accidental release of man-made radionuclides to the oceans in history— a release that continues to this day. Compared to monitoring on land, studies of the ocean are far fewer, yet the area impacted and quantity delivered- 80% of all radioactivity released- is far greater. For oceanographers, this presents a challenge of unprecedented scope and complexity: to understand exactly how these events played out, how radiation continues to move through the marine system (including important seafood items), and, in turn, how best to communicate scientific findings that will inform public policy decisions far into the future. This presentation will provide an overview of the sources and fate of radionuclides released from Fukushima to the ocean. An emphasis will be given on the sources of cesium, its transport in waters, and fluxes associated with sinking particles and accumulation in sediments.

Buesseler, Ken

2013-04-01

424

Renewable Energy Research Planning for Renewable-based  

E-print Network

Renewable Energy Research Planning for Renewable-based Energy Security and Prosperity in Humboldt of the county, however, offers much potential. Many indigenous renewable energy resources, such as biomass affecting renewable energy in the region. An array of potential ownership models will be considered

425

Renewable energy plan of action for American Samoa  

SciTech Connect

American Samoa has no indigenous fossil fuels and is almost totally dependent for energy on seaborne petroleum. However, the seven Pacific Islands located at 14 degrees south latitude that constitute American Samoa have a wide variety of renewable resources with the potential for substituting for imported oil. Included as possible renewable energy conversion technologies are solar thermal, photovoltaics, wind, geothermal, ocean thermal, and waste-to-energy recovery. This report evaluates the potential of each of these renewable energy alternatives and establishes recommended priorities for their development in American Samoa. Rough cost estimates are also included. Although renewable energy planning is highly site specific, information in this report should find some general application to other tropical insular areas.

Shupe, J.W. (USDOE San Francisco Operations Office, Honolulu, HI (USA). Pacific Site Office); Stevens, J.W. (Sandia National Labs., Albuquerque, NM (USA))

1990-11-01

426

Renewable Energy Technology Certificate  

NSDL National Science Digital Library

The Advanced Technology Environmental and Energy Center (ATEEC) has provided this framework for a renewable energy certificate. Users must download this resource for viewing, which requires a free log-in. There is no cost to download the item.

2011-05-27

427

AID's renewable energy projects  

SciTech Connect

Efforts by the US to promote renewable energy and fuelwood projects in developing countries were reviewed. Issues of slow project implementation and questionable field-testing of energy devices are discussed.

Not Available

1982-08-13

428

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented to the 2012 Western Conference of Public Service Commissioners, during their June, 2012, meeting. The Western Conference of Public Service Commissioners is a regional association within the National Association of Regulatory Utility Commissioners (NARUC).

Hand, M. M.

2012-08-01

429

Ocean Acidification  

NSDL National Science Digital Library

Students choose shell fragments from different species of Molluscs and calculate percent lose after soaking in different ph solutions for different periods of time. They research ocean acidification and especially local events off the Oregon coast to apply to this activity.

Bown, Jennifer

430

Ocean bowling  

Microsoft Academic Search

Coach Scott Carpenter, a biology teacher at Lexington High School in Massachusetts, says that ``some [students] want to show that they can win on a football field, and some want to show that they know science better than anyone else.''His team of four sophomores and one senior proved their mettle when they won the 1998 National Ocean Science Bowl on

Randy Showstack

1998-01-01

431

Ocean bowling  

NASA Astrophysics Data System (ADS)

Coach Scott Carpenter, a biology teacher at Lexington High School in Massachusetts, says that “some [students] want to show that they can win on a football field, and some want to show that they know science better than anyone else.”His team of four sophomores and one senior proved their mettle when they won the 1998 National Ocean Science Bowl on April 27.

Showstack, Randy

432

Ocean Events  

NSDL National Science Digital Library

This website from the Operational Significant Event Imagery (OSEI) team produces high-resolution detailed imagery of significant ocean events. OSEI products typically include sea surface temperature plots and single-channel imagery of oil spills. The images are available in several different file sizes; standard (full resolution) and preview (thumbnail).

Imagery, Operational S.; Noaa

433

The Ocean.  

ERIC Educational Resources Information Center

The chemistry of the ocean, whose constituents interact with those of air and land to support life and influence climate, is known to have undergone changes since the last glacial epoch. Changes in dissolved oxygen, calcium ions, phosphate, carbon dioxide, carbonate ions, and bicarbonate ions are discussed. (JN)

Broecker, Wallace S.

1983-01-01

434

Ocean Currents  

Microsoft Academic Search

IF Mr. Laughton will take the trouble, to read my previous Reports with attention, he will find that I have based no argument upon my ``trough'' experiment, which I have used merely as an illustration. The argument in favour of the vertical Oceanic Circulation which I advocate rests upon the facts of Deep Sea Temperature. In my forthcoming Report, these

William B. Carpenter

1872-01-01

435

Ocean Waves  

NSDL National Science Digital Library

This webpage, from Hyperphysics, provides a detailed explanation of how waves form in the ocean. A series of diagrams show how the water moves as a wave passes by. The site shows how a water wave's speed depends on wavelength, and how the shape of a wave depends on its amplitude. A description of why waves break on a beach is included.

Nave, Carl R.

2010-07-13

436

Ocean World  

NSDL National Science Digital Library

The majority of Ocean World is devoted to a series of ten reference sections: coral reefs, currents, El Nino, Fisheries, Ice Ages, icebergs, JASON-1 (a satellite), the role of the ocean in weather, satellites and ocean exploration, and waves. Each section culminates with an interactive quiz, links to sources of related real-time data, and a list of additional related links. Also available is a set of supplementary services, including a glossary, a question and answer section called Ask Dr.Bob, an index page for all of the available real-time dataset sources, primer pages on the use of internet technology, and links to three distance learning courses in oceanography offered by Texas A&M university. An additional series of link lists are broken up into Four Star Sites, General Links, and (the site author's) Bookmarks. Finally, under a teacher's introductory section to the site, instructors can access a guide to using Ocean World in the classroom, find advice on teaching oceanography in general, locate technology lab stations, and follow links to additional teaching resources.

437

Empty Oceans  

NSDL National Science Digital Library

How does the human population affect the population of marine species? What can citizens do to sustain seafood populations? In this lesson, students will learn how pieces of the ocean food web, fish, are being removed faster than they can be replenished. Students will also learn how they can become informed consumers to promote sustainable seafood.

438

Making use of renewable energy  

SciTech Connect

This book describes renewable energy projects proposed for the rural areas of developing countries. Topics considered include biogas generation in Zimbabwe, biogas technology for water pumping in Botswana, soil fertility and energy problems in rural development in the Zaire rain forest, international scientific collaboration on biogas technologies for rural development, alcohol from biomass, an ethanol project in Zimbabwe, biomass alcohol and the fuel-food issue, solar water heating in Zimbabwe, absorbent box solar cookers, solar crop drying in Zimbabwe, the use of passive solar energy in Botswana buildings, the potential of mini hydro systems, woodfuel as a potential renewable energy source, small-scale afforestation for domestic needs in the communal lands of Zimbabwe, muscle power, the use of human energy in construction, hand-operated water pumps, animal power for water pumping in Botswana, the production of charcoal in Zambia, improving the efficiency of a traditional charcoal-burning Burmese cooking stove, social impacts, non-engineering constraints affecting energy use in a rural area, women and energy, and non-technical factors influencing the establishment of fuels-from-crops industries in developing countries.

Johnston, J.C.

1984-01-01

439

Ocean thermal energy conversion: Perspective and status  

NASA Astrophysics Data System (ADS)

The use of the thermal gradient between the warm surface waters and the deep cold waters of tropical oceans was first proposed by J. A. d'Arsonval in 1881 and tried unsuccessfully by George Claude in 1930. Interest in Ocean Thermal Energy Conversion (OTEC) and other renewable energy sources revived in the 1970s as a result of oil embargoes. At that time, the emphasis was on large floating plants miles from shore producing 250 to 400 MW for maintained grids. When the problems of such plants became better understood and the price of oil reversed its upward trend, the emphasis shifted to smaller (10 MW) shore based plants on tropical islands. Such plants would be especially attractive if they produce fresh water as a by-product. During the past 15 years, major progress has been made in converting OTEC unknowns into knowns. Mini-OTEC proved the closed cycle concept. Cost effective heat exchanger concepts were identified. An effective biofouling control technique was discovered. Aluminum was determined to be promising for OTEC heat exchangers. Heat transfer augmentation techniques were identified, which promised a reduction on heat exchanger size and cost. Fresh water was produced by an OTEC open cycle flash evaporator, using the heat energy in the seawater itself. The current R and D emphasis is on the design and construction of a test facility to demonstrate the technical feasibility of the open cycle process. The 10 MW shore-based, closed cycle plant can be built with today's technology; with the incorporation of a flash evaporator, it will produce fresh water as well as electrical power; both valuable commodities on many tropical islands. The open cycle process has unknowns that require solution before the technical feasibility can be demonstrated. The economic viability of either cycle depends on reducing the capital costs of OTEC plants and on future trends in the costs of conventional energy sources.

Thomas, Anthony; Hillis, David L.

440

Pre-Feasibility Analysis of Pellet Manufacturing on the Former Loring Air Force Base Site. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect

The U.S. Environmental Protection Agency (EPA) Office of Solid Waste and Emergency Response, in accordance with the RE-Powering America's Lands initiative, engaged the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to conduct feasibility studies to assess the viability of developing renewable energy generating facilities on contaminated sites. This site, in Limestone, Maine -- formerly the location of the Loring Air Force Base but now owned by the Aroostook Band of Micmac -- was selected for the potential to produce heating pellets from woody feedstock. Biomass was chosen as the renewable energy resource to evaluate based on abundant woody-biomass resources available in the area. NREL also evaluates potential savings from converting existing Micmac property from oil-fired heating to pellet heating.

Hunsberger, R.; Mosey, G.

2014-04-01

441

Article for Holyrood Magazine (Renewables Supplement) Dr Gareth Harrison  

E-print Network

on growth in renewable energy. Acid Rain Fossil-fuelled power stations produce significant quantities of sulphur and nitrogen oxides which are precipitated as acid rain across wide areas. Pictures from the 1980s

Harrison, Gareth

442

Renewable Energy Positioning System: Energy Positioning: Control and Economics  

SciTech Connect

GENI Project: The University of Washington and the University of Michigan are developing an integrated system to match well-positioned energy storage facilities with precise control technologies so the electric grid can more easily include energy from renewable power sources like wind and solar. Because renewable energy sources provide intermittent power, it is difficult for the grid to efficiently allocate those resources without developing solutions to store their energy for later use. The two universities are working with utilities, regulators, and the private sector to position renewable energy storage facilities in locations that optimize their ability to provide and transmit electricity where and when it is needed most. Expanding the network of transmission lines is prohibitively expensive, so combining well-placed storage facilities with robust control systems to efficiently route their power will save consumers money and enable the widespread use of safe, renewable sources of power.

None

2012-03-01

443

Renewable Energy Carriers Research Profile  

E-print Network

Renewable Energy Carriers Research Profile The research program of the Professorship of Renewable applied to renewable energy technologies. The fundamental research focus comprises high-temperature heat (radiative fluxes >10 000 kW/m2 ; temperatures >1000°C; heating rates >1000°C/s) + Renewable Energy

444

DE-EE0000319 Final Technical Report [National Open-ocean Energy Laboratory  

SciTech Connect

Under the authorization provided by Section 634 of the Energy Independence and Security Act of 2007 (P.L. 110-140), in 2009 FAU was awarded U.S. Congressionally Directed Program (CDP) funding through the U.S. Department of Energy (DOE) to investigate and develop technologies to harness the energy of the Florida Current as a source of clean, renewable, base-load power for Florida and the U.S. A second CDP award in 2010 provided additional funding in order to enhance and extend FAU’s activities. These two CDPs in 2009 and 2010 were combined into a single DOE grant, DE-EE0000319, and are the subject of this report. Subsequently, in July 2010 funding was made available under a separate contract, DE-EE0004200. Under that funding, DOE’s Wind and Water Power Program designated FAU’s state of Florida marine renewable energy (MRE) center as the Southeast National Marine Renewable Energy Center (SNMREC). This report discusses SNMREC activities funded by the DE-EE0000319 grant, but will make reference, as appropriate, to activities that require further investigation under the follow-on grant. The concept of extracting energy from the motions of the oceans has a long history. However, implementation on large scales of the technologies to effect renewable energy recovery from waves, tides, and open-ocean currents is relatively recent. DOE’s establishment of SNMREC recognizes a significant potential for ocean current energy recovery associated with the (relatively) high-speed Florida Current, the reach of the Gulf Stream System flowing through the Straits of Florida, between the Florida Peninsula and the Bahamas Archipelago. The proximity of the very large electrical load center of southeast Florida’s metropolitan area to the resource itself makes this potential all the more attractive. As attractive as this potential energy source is, it is not without its challenges. Although the technology is conceptually simple, its design and implementation in a commercially-viable fashion presents a variety of challenges. Beyond the technology itself (and, especially, the effects on the technology of the harsh oceanic environment), it is important to consider the possible environmental impacts of commercial-scale implementation of oceanic energy extraction. Further, because such implementation represents a completely new undertaking, the human resources required do not exist, so education and training programs are critical to eventual success. This project, establishing a national open-ocean energy laboratory, was designed to address each of these three challenges in a flexible framework allowing for adaptive management as the project proceeded. In particular: ? the technology challenge, including resource assessment, evolved during the project to recognize and address the need for a national testing facility in the ocean for small-scale prototype MRE systems developed by industry; ? the environmental challenge became formalized and expanded during the permitting process for such a testing facility; and ? the human resources/societal challenges, both in terms of the need for education and training and in terms of public acceptance of MRE, stimulated a robust outreach program far beyond that originally envisioned at SNMREC. While all of these activities at SNMREC are ongoing, a number of significant milestones (in addition to the contributions listed in the appendices) were achieved under the auspices of this award. These include: ? Planning and site selection for the first-phase test facility, offshore of Dania Beach, FL, including some equipment for the facility, submission of an Interim Policy Lease Application to the U.S. Department of Interior’s Bureau of Ocean Energy Management (BOEM), and completion of an Environmental Assessment by BOEM and a positive Consistency Determination by the State of Florida; ? Measurements using acoustic profilers of the current structure and variability in the vicinity of the site under a variety of weather conditions, seasons and time durations; ? Design and implementation of instrument

Skemp, Susan

2013-12-29

445

Renewable Energy Living Lab: The Bright Idea  

NSDL National Science Digital Library

Students use real-world data to evaluate the feasibility of solar energy and other renewable energy sources in different U.S. locations. Working in small groups, students act as engineers evaluating the suitability of installing solar panels at four company locations. They access data from the online Renewable Energy Living Lab from which they make calculations and analyze how successful solar energy generation would be, as well as the potential for other power sources at those locations. Then they summarize their results, analysis and recommendations in the form of feasibility plans prepared for a CEO.

Civil And Environmental Engineering Department

446

Integrating Variable Renewable Energy: Challenges and Solutions  

SciTech Connect

In the U.S., a number of utilities are adopting higher penetrations of renewables, driven in part by state policies. While power systems have been designed to handle the variable nature of loads, the additional supply-side variability and uncertainty can pose new challenges for utilities and system operators. However, a variety of operational and technical solutions exist to help integrate higher penetrations of wind and solar generation. This paper explores renewable energy integration challenges and mitigation strategies that have been implemented in the U.S. and internationally, including forecasting, demand response, flexible generation, larger balancing areas or balancing area cooperation, and operational practices such as fast scheduling and dispatch.

Bird, L.; Milligan, M.; Lew, D.

2013-09-01

447

Green Learning Canada: Adventures in renewable energy technology  

NSDL National Science Digital Library

This website is a collection of resources for secondary teachers and learners on renewable energy sources. It contains lesson plans and content support for clean energy technologies. Detailed construction plans are provided for students to construct working models of solar ovens, wind turbines, hydroelectric generators, and biogas generators. Related links and backgrounders in renewable energy basics, solar heat, solar electricity, wind power, water power, biomass energy, and other clean energy technologies are also provided.

2007-10-23

448

Renewable-energy integration assessment through a dedicated computer program  

Microsoft Academic Search

This article is intented to present an approach to assess the possibilities of renewable resources through the dynamics of stand-alone and system-integrated renewable-based power plants. Mainly solar and wind energy will be considered leading to the computer program devoted to the simulation of both solar photovoltaic power plants and wind energy converters. Besides, the assessment of the integration of these

M. A. Castro; J. Carpio; J. Peire; J. A. Rodriguez

1996-01-01

449

Overview of energy storage systems for storing electricity from renewable energy sources in Saudi Arabia  

Microsoft Academic Search

Renewable power (photovoltaic, solar thermal or wind) is inherently intermittent and fluctuating. If renewable power has to become a major source of base-load dispatchable power, electricity storage systems of multi-MW capacity and multi-hours duration are indispensable. An overview of the advanced energy storage systems to store electrical energy generated by renewable energy sources is presented along with climatic conditions and

Faizur Rahman; Shafiqur Rehman; Mohammed Arif Abdul-Majeed

450

Ocean energy systems  

NASA Astrophysics Data System (ADS)

Progress is reported on the development of Ocean Thermal Energy Conversion (OTEC) systems that will provide synthetic fuels (e.g., methanol), energy-intensive products such as ammonia (for fertilizers and chemicals), and aluminum. The work also includes assessment and design concepts for hybrid plants, such as geothermal-OTEC (GEOTEC) plants. Another effort that began in the spring of 1982 is a technical advisory role to DOE with respect to their management of the conceptual and preliminary design activity of industry teams that are designing a shelf-mounted offshore OTEC pilot plant that could deliver power to Oahu, Hawaii. In addition, a program is underway to evaluate and test the Pneumatic Wave-Energy Conversion System (PWECS), an ocean-energy device consisting of a turbine that is air-driven as a result of wave action in a chamber. The work on the various tasks as of 31 March 1983 is reported.

451

Renewable energy sources and energy efficiency for building's greening: From traditional village houses via high-rise residential building's BPS and RES powered co- and tri-generation towards net ZEBuildings and Cities  

Microsoft Academic Search

As an introduction to the current approaches to building's greening and sustainability this paper outlines the intrinsic harmony of the traditional village houses encompassing efficiency and balanced use of renewable materials and energy sources. Further paper reviews technical advances in integrating energy efficiency, solar and other renewable energy sources in new and existing buildings, to approach sustainable net Zero Energy

Marija S. Todorovic; Olivera Ecim Djuric; Ivana Matinovic; Dusan Licina

2011-01-01

452

Integration of Storage Devices into Power Systems  

E-print Network

Integration of Storage Devices into Power Systems with Renewable Energy Sources Final Project System #12;Integration of Storage Devices into Power Systems with Renewable Energy Sources Final Project of Storage Devices into Power Systems with Renewable Energy Sources" (project S-40). We express our

453

Energy extraction from ocean currents and waves: Mapping the most promising locations  

NASA Astrophysics Data System (ADS)

Concerns about fossil fuel supplies and an ever-increasing demand for energy have prompted the search for alternative power sources. One option is the ocean, a power-dense and renewable source of energy, but its capacity to meet human energy demands is poorly understood. Although raw wave energy resources have been investigated at many scales, there is still substantial uncertainty regarding how much useful power can be extracted. Even less is known about the energy available in ocean currents, especially on a global scale. Moreover, no studies have attempted to examine wave and current energy simultaneously while at the same time taking into account geographical, environmental, and technical factors that can substantially limit the amount of extractable energy. In this study, we use high fidelity oceanographic model data to assess the availability, recoverability, and value of energy in ocean wind waves and currents. Global wave energy transport, coastal wave energy flux, and current energy are calculated and mapped using the model data. These maps are then incorporated into a geographic information system (GIS) in order to assess the U.S. recoverable ocean energy resource. In the GIS, the amount of recoverable energy is estimated by combining the power output from realistic wave and current energy farms with physical and ecological data such as bathymetry and environmentally protected areas. This holistic approach is then used to examine the distribution and value of extractable wave and current energy along the U.S. coast. The results support previous studies that show that the U.S. West Coast has large potential for wave energy extraction and that the Florida Strait has high potential for current energy extraction. We also show that, at any particular location, the amount of available ocean energy is only one factor of many that determines the ultimate feasibility and value of the energy. We outline ways in which the GIS framework used in this assessment can be enhanced to better model the many variables that affect the value of ocean energy; future research in this area may lead to greater support for developing, testing, and deploying ocean energy converter technology.

Ordonez, A.; Hamlington, P.; Fox-Kemper, B.

2012-12-01

454

Green marketing, renewables, and free riders: increasing customer demand for a public good  

Microsoft Academic Search

Retail electricity competition will allow customers to select their own power suppliers and some customers will make purchase decisions based, in part, on their concern for the environment. Green power marketing targets these customers under the assumption that they will pay a premium for ``green`` energy products such as renewable power generation. But renewable energy is not a traditional product

Ryan Wiser; Steven Pickle

1997-01-01

455

Integration of renewable energy into the transport and electricity sectors through V2G  

E-print Network

Integration of renewable energy into the transport and electricity sectors through V2G Henrik Lund Renewable energy Wind powerQ1 a b s t r a c t Large-scale sustainable energy systems will be necessary replace oil in the transportation sector, and (2) since today's inexpensive and abundant renewable energy

Firestone, Jeremy

456

Battery energy storage systems: Assessment for small-scale renewable energy integration  

Microsoft Academic Search

Concerns arising due to the variability and intermittency of renewable energy sources while integrating with the power grid can be mitigated to an extent by incorporating a storage element within the renewable energy harnessing system. Thus, battery energy storage systems (BESS) are likely to have a significant impact in the small-scale integration of renewable energy sources into commercial building and

Nirmal-Kumar C. Nair; Niraj Garimella

2010-01-01

457

Ocean Tracks  

NSDL National Science Digital Library

How are marine animals moving around when they are deep below the ocean's surface? It's a fascinating question, and one that has driven the work of part of Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO). On this website, visitors can see the "tracks" of selected marine animals tagged by CSIRO and partner agencies. It's an amazing experience, and visitors just need to download a small plug-in to get started. Some of the marine animals here include white sharks patrolling Australia's southern coast and bluefin tuna on their oceanic migrations. The About area is a great way to learn about the research and technology involved with this complicated endeavor. Also, visitors can check out the low-tech/accessible version of the site if they are so inclined.

458

Ocean Tracks  

NSDL National Science Digital Library

How are marine animals moving around when they are deep below the ocean's surface? It's a fascinating question, and one that has driven the work of part of Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO). On this website, visitors can see the "tracks" of selected marine animals tagged by CSIRO and partner agencies. It's an amazing experience, and visitors just need to download a small plug-in to get started. Some of the marine animals here include white sharks patrolling Australia's southern coast and bluefin tuna on their oceanic migrations. The About area is a great way to learn about the research and technology involved with this complicated endeavor. Also, visitors can check out the low-tech/accessible version of the site if they are so inclined.

2013-02-08

459

Promoting STEM to Young Students by Renewable Energy Applications  

ERIC Educational Resources Information Center

The Math-Science-Engineering Technology in Iowa on Applied Renewable Energy Areas (MSETI-AREA) projects are aimed at providing area school teachers with an applied mathematics and science curriculum package based on photovoltaic (PV) power, wind power, human power and hydrogen fuel-cell fundamentals. The MSETI-AREA project has established a…

Pecen, Recayi; Humston, Jill L.; Yildiz, Faruk

2012-01-01

460

Oceanic Lidar  

NASA Technical Reports Server (NTRS)

Instrument concepts which measure ocean temperature, chlorophyll, sediment and Gelbstoffe concentrations in three dimensions on a quantitative, quasi-synoptic basis were considered. Coastal zone color scanner chlorophyll imagery, laser stimulated Raman temperaure and fluorescence spectroscopy, existing airborne Lidar and laser fluorosensing instruments, and their accuracies in quantifying concentrations of chlorophyll, suspended sediments and Gelbstoffe are presented. Lidar applications to phytoplankton dynamics and photochemistry, Lidar radiative transfer and signal interpretation, and Lidar technology are discussed.

Carder, K. L. (editor)

1981-01-01

461

Interactive Oceans  

NSDL National Science Digital Library

This site is a collaboration of US and Canadian research institutions; it proposes an ocean observatory in the NE Pacific. A network of fiber optic cables on the Juan de Fuca plate will support sensors to monitor geological, chemical and biological events and provide shore-based researchers with real-time data. The site is intended to serve learners from K to college with web access to data, curricula and activities, as well as maps, images, videos of deep-sea environments.

2011-04-19

462

Ocean Voyagers  

NSDL National Science Digital Library

Ocean Voyagers is an educational outreach initiative consisting of an interdisciplinary curriculum program. It is designed to allow middle school teachers and students to gain real-world knowledge about oceanographic science, social science, maritime cultures, communication, literature, and the language arts. This site includes: integrated lesson plans on oceanographic science, maritime life and lore, technology and communications, and profiles of the Navy oceanographic survey fleet.

463

Renewable Energy Law, Regulation and the Environment, MAST 667016, Fall 2013 Now known as  

E-print Network

and marine renewable (wave, current and tidal). The respective roles of federal government agencies: Transmission, RTOs, Grid Integration, State Utility Commissions and Power Purchase Agreements (PPAs) Review

Delaware, University of

464

Water Power for a Clean Energy Future (Fact Sheet)  

SciTech Connect

This fact sheet provides an overview of the U.S. Department of Energy's Wind and Water Power Program's water power research activities. Water power is the nation's largest source of clean, domestic, renewable energy. Harnessing energy from rivers, manmade waterways, and oceans to generate electricity for the nation's homes and businesses can help secure America's energy future. Water power technologies fall into two broad categories: conventional hydropower and marine and hydrokinetic technologies. Conventional hydropower facilities include run-of-the-river, storage, and pumped storage. Most conventional hydropower plants use a diversion structure, such as a dam, to capture water's potential energy via a turbine for electricity generation. Marine and hydrokinetic technologies obtain energy from waves, tides, ocean currents, free-flowing rivers, streams and ocean thermal gradients to generate electricity. The United States has abundant water power resources, enough to meet a large portion of the nation's electricity demand. Conventional hydropower generated 257 million megawatt-hours (MWh) of electricity in 2010 and provides 6-7% of all electricity in the United States. According to preliminary estimates from the Electric Power Resource Institute (EPRI), the United States has additional water power resource potential of more than 85,000 megawatts (MW). This resource potential includes making efficiency upgrades to existing hydroelectric facilities, developing new low-impact facilities, and using abundant marine and hydrokinetic energy resources. EPRI research suggests that ocean wave and in-stream tidal energy production potential is equal to about 10% of present U.S. electricity consumption (about 400 terrawatt-hours per year). The greatest of these resources is wave energy, with the most potential in Hawaii, Alaska, and the Pacific Northwest. The Department of Energy's (DOE's) Water Power Program works with industry, universities, other federal agencies, and DOE's national laboratories to promote the development and deployment of technologies capable of generating environmentally sustainable and cost-effective electricity from the nation's water resources.

Not Available

2012-03-01

465

Integrating Renewable Electricity on the Grid  

NASA Astrophysics Data System (ADS)

The demand for carbon-free electricity is driving a growing movement of adding renewable energy to the grid. Renewable Portfolio Standards mandated by states and under consideration by the federal government envision a penetration of 20-30% renewable energy in the grid by 2020 or 2030. The renewable energy potential of wind and solar far exceeds these targets, suggesting that renewable energy ultimately could grow well beyond these initial goals. The grid faces two new and fundamental technological challenges in accommodating renewables: location and variability. Renewable resources are concentrated at mid-continent far from population centers, requiring additional long distance, high-capacity transmission to match supply with demand. The variability of renewables due to the characteristics of weather is high, up to 70% for daytime solar due to passing clouds and 100% for wind on calm days, much larger than the relatively predictable uncertainty in load that the grid now accommodates by dispatching conventional resources in response to demand. Solutions to the challenges of remote location and variability of generation are needed. The options for DC transmission lines, favored over AC lines for transmission of more than a few hundred miles, need to be examined. Conventional high voltage DC transmission lines are a mature technology that can solve regional transmission needs covering one- or two-state areas. Conventional high voltage DC has drawbacks, however, of high loss, technically challenging and expensive conversion between AC and DC, and the requirement of a single point of origin and termination. Superconducting DC transmission lines lose little or no energy, produce no heat, and carry higher power density than conventional lines. They operate at moderate voltage, allowing many "on-ramps" and "off-ramps" in a single network and reduce the technical and cost challenges of AC to DC conversion. A network of superconducting DC cables overlaying the existing patchwork of conventional transmission lines would create an interstate highway system for electricity that moves large amounts of renewable electric power efficiently over long distances from source to load. Research and development is needed to identify the technical challenges associated with DC superconducting transmission and how it can be most effectively deployed. The challenge of variability can be met (i) by switching conventional generation capacity in or out in response to sophisticated forecasts of weather and power generation, (ii) by large scale energy storage in heat, pumped hydroelectric, compressed air or stationary batteries designed for the grid, or (iii) by national balancing of regional generation deficits and excesses using long distance transmission. Each of these solutions to variability has merit and each requires significant research and development to understand its capacity, performance, cost and effectiveness. The challenge of variability is likely to be met by a combination of these three solutions; the interactions among them and the appropriate mix needs to be explored. The long distances from renewable sources to demand centers span many of the grid's physical, ownership and regulatory boundaries. This introduces a new feature to grid structure and operation: national and regional coordination. The grid is historically a patchwork of local generation resources and load centers that has been built, operated and regulated to meet local needs. Although it is capable of sharing power across moderate distances, the arrangements for doing so are cumbersome and inefficient. The advent of renewable electricity with its enormous potential and inherent regional and national character presents an opportunity to examine the local structure of the grid and establish coordinating principles that will not only enable effective renewable integration but also simplify and codify the grid's increasingly regional and national character.

Crabtree, George; Misewich, Jim; Ambrosio, Ron; Clay, Kathryn; DeMartini, Paul; James, Revis; Lauby, Mark; Mohta, Vivek; Moura, John; Sauer, Peter; Slakey, Francis; Lieberman, Jodi; Tai, Humayun

2011-11-01

466

National Renewable Energy Laboratory: Education Programs  

NSDL National Science Digital Library

The National Renewable Energy Laboratory (NREL) believes that "educating students, teachers, and consumers is the other key to finding new renewable ways to power our homes, businesses, and cars." This site is full of important educational resources such as classroom activities, online quizzes, and fact sheets that deal with renewable energy technology and applied sciences. In the Educational Resources area, visitors can make their way through several dozen lesson plans, including "History of Solar Cells," "Teacher's Guide to Wind Energy," and "School Energy Audit." Moving on, the DOE Undergraduate Internships & Graduate Fellowships area gives interested parties access to application forms for the Science Undergraduate Laboratory Internship Program and the Graduate Fellowship Program. The site is rounded out by information on the annual Junior Solar Sprint & Hydrogen Fuel Cell Car Competition.

2012-07-20

467

Oceanic Hotspots  

NASA Astrophysics Data System (ADS)

The Wilson-Morgan hypothesis that fixed mantle plumes rising from deep in Earth's mantle give rise to linear island and seamount chains like Hawaii has been a leading idea in planetary geodynamics for many decades. However, the notion that these ascending columns of buoyant mantle material are fixed relative to each other or to a fixed reference frame has been questioned because the mean regional flow of the mantle (the so-called mantle wind) would be expected to entrain them and waft them about. Lately, even more fundamental questions have been raised regarding the existence of deep mantle conduits. In fact, the subject of plumes has become quite controversial, with important implications for ideas of mantle convection, Earth's differentiation, and planetary magma budgets and cooling. The appearance of Oceanic Hotspots: Intraplate Submarine Magmatism and Tectonics is thus timely. The 14 chapters contained in this nicely produced volume reflect in part the successful Franco-German collaboration spanning more than 17 years (1986 to present) and 15 expeditions to largely uncharted and unexplored regions of the South Pacific Ocean. The editors intended to produce a comprehensive multidisciplinary overview of oceanic plumes in this region, and in this they have succeeded, with both review and research chapters. Most papers document new discoveries and contain new data and/or new and original thinking, whereas others provide a broad overview and synthesis of existing data.

Batiza, Rodey

2004-10-01

468

Introduction to Ocean Models  

NSDL National Science Digital Library

Oceans cover over 70% of the surface of the earth, yet many details of their workings are not fully understood. To better understand and forecast the state of the ocean, we rely on numerical ocean models. Ocean models combine observations and physics to predict the ocean temperature, salinity, and currents at any time and any place across the ocean basins. This module will discuss what goes into numerical ocean models, including model physics, coordinate systems, parameterization, initialization, and boundary conditions.

Comet

2007-08-06

469

Renewable Energy Policy Project  

NSDL National Science Digital Library

Established in 1995 with funding from the Energy Foundation and the Department of Energy, the Renewable Energy Policy Project (REPP) has spent the past decade educating the general public about renewable energies. This is accomplished by providing competent and rigorous policy analysis about the myriad of issues surrounding the viability and sustainability of such energy sources. Visitors to the siteâÂÂs homepage will find clickable icons (such as those depicting wind, solar, and hydrogen), and they can discover the variety of resources associated with each type of renewable energy source. These resources generally include a brief description of the REPPâÂÂs work in each field, along with links to some of their more recent working papers and policy briefs. For persons who hope to join the discussion about some of these timely topics, the site also maintains a number of relevant listservs, such as those dealing with bioconversion and strawbale conversion.

470

Renewables in Federal facilities  

SciTech Connect

President Clinton signed Executive Order 12902 on March 8, 1994 to improve energy efficiency and water conservation in Federal facilities across the nation and to increase investments in solar and other renewable energy. The Federal government is now required to significantly increase the use of solar and other renewable energy sources. Technological advances, increasing energy costs, and the economies of scale now being realized make this goal attainable. Many Federal agencies are already successfully using dependable renewable energy to meet their energy needs and reduce harmful effects to the environment, such as global warming, acid rain, toxic air emissions, and oil spills. The Department of Energy`s (DOE`s) Federal Energy Management Program (FEMP) is directed to implement key sections of this Federal Energy and Water Efficiency Executive Order. A working group, led by DOE, comprising of Federal agencies, industry, and national laboratory staff is developing a program to cost-effectively achieve this goal.

Thomas, B.K.

1996-05-01

471

Renewable Electricity Futures (Presentation)  

SciTech Connect

This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at the 2012 RE AMP Annual Meeting. RE-AMP is an active network of 144 nonprofits and foundations across eight Midwestern states working on climate change and energy policy with the goal of reducing global warming pollution economy-wide 80% by 2050.

Mai, T.

2012-08-01

472

Ocean and Plume Science and Management Forum January 24, 2014  

E-print Network

1 Ocean and Plume Science and Management Forum January 24, 2014 Northwest Power and Conservation of the Ocean and Plume Science and Management Forum and led a round of introductions. The October 24, 2013 from objectives 3a, 3b and 3d in the charter for the Ocean and Plume Forum. Rich then described

473

Renewable Energy Business Partnerships in China: Renewable Energy in China  

SciTech Connect

China has rich potential for renewable energy development including wind energy, solar, biomass, hydropower, and geothermal. Fact sheet describes Chinas policy for attracting foreign investment, Chinas tax policy, import duties, currency exchange, and renewable joint ventures in China.

Not Available

2004-04-01

474

Ocean Temperatures  

NSDL National Science Digital Library

A joint effort of NOAA Research and the College of Education at the University of South Alabama, this site seeks to provide middle school science students and teachers with research and investigation experiences using on-line resources. In this unit, students investigate ocean temperature around the world, and how it varies during the year and at different locations. This helps explain what causes seasons, and allows students to make predictions about future changes in sea and air temperatures. Students use data from the National Data Buoy Center to answer a series of questions, and complete related enrichment exercises. A downloadable teacher's guide, student guide, and necessary activity sheets are provided.

475

Ocean Currents  

NSDL National Science Digital Library

A joint effort of NOAA Research and the College of Education at the University of South Alabama, this site seeks to provide middle school science students and teachers with research and investigation experiences using on-line resources. It contains activities pertaining to ocean currents (their properties and influence on weather and sea life). Students gather data from other websites, apply the data to answer a series of questions, and participate in related enrichment exercises. A downloadable teacher's guide, student guide, and all necessary activity sheets are included.

476

Energy 5: Renewable and Non-Renewable Resources  

NSDL National Science Digital Library

This video distinguishes between renewable and non-renewable energy resources. It examines the question, "How long to do we have before we exhaust non-renewable resources?" It also looks at alternatives to non-renewable energy resources. This video is part of the Sustainability Learning Suites, made possible in part by a grant from the National Science Foundation. See 'Learn more about this resource' for Learning Objectives and Activities.

Vanasupa, Linda

477

Renew, Reflect, and Refresh  

ERIC Educational Resources Information Center

Is that the sound of the last bus leaving the schoolyard? Or the staff's collective sigh of relief? School's out. Now it's time to nurture the lifelong learner deep inside with a summer reading list that will allow teachers to renew, reflect, and refresh. The National Science Education Standards reminds us, "Becoming an effective science teacher…

Texley, Juliana

2005-01-01

478

Renewable Energy Education Set  

NSDL National Science Digital Library

Kit demonstrates an entire miniature renewable energy system. Set includes a wind turbine kit, solar photovoltaic panel, an electrolyzer, a PEM fuel cell, and a hydrogen storage system. Helps students visualize the workings of clean energy principles. For grades 4-12.

1900-01-01

479

Offshore Renewable Energy Solutions  

E-print Network

and maximising energy extraction. Offshore understanding Our long track record working with the oil and gasOffshore Renewable Energy Solutions #12;Cefas: meeting complex requirements The Centre and fisheries data. We also work collaboratively, with cross-cutting project teams, innovators in the supply

480

Canadian Renewable Fuels Association  

NSDL National Science Digital Library

The CRFA promotes the use of renewable bio-fuels (ethanol, biodiesel). Membership includes representatives from fuel marketing, fuel production agriculture, forestry, engineering and environmental organizations, and researchers and individuals. Visitors can find policy papers, industry statistics, plant locations, and FAQs and fact sheets about biodiesel and ethanol.

481

GROUND WATER REMEDIATION POWERED WITH RENEWABLE ENERGY  

EPA Science Inventory

Technical challenge: Resource conservation has become a critical concept in the remediation of contaminated ground water supplies. Ground water remedies which include surface discharge of treated ground water are often viewed as wasteful and non-sustainable....

482

LEAD COMMISSIONER REPORT RENEWABLE POWER IN  

E-print Network

Robert B. Weisenmiller, Ph.D Chair Primary Authors Jim Adams Rizaldo Aldas Eileen Allen Al Alvarado Grace Mike Kane Linda Kelly Joel Klein Eric Knight Andrea Koch Don Kondoleon Mark Kootstra Pramod Kulkarni Zhiqin Zhang Kate Zocchetti Suzanne Korosec Project Manager Robert P. Oglesby Executive Director

483

TidGen Power System Commercialization Project  

SciTech Connect

ORPC Maine, LLC, a wholly-owned subsidiary of Ocean Renewable Power Company, LLC (collectively ORPC), submits this Final Technical Report for the TidGen® Power System Commercialization Project (Project), partially funded by the U.S. Department of Energy (DE-EE0003647). The Project was built and operated in compliance with the Federal Energy Regulatory Commission (FERC) pilot project license (P-12711) and other permits and approvals needed for the Project. This report documents the methodologies, activities and results of the various phases of the Project, including design, engineering, procurement, assembly, installation, operation, licensing, environmental monitoring, retrieval, maintenance and repair. The Project represents a significant achievement for the renewable energy portfolio of the U.S. in general, and for the U.S. marine hydrokinetic (MHK) industry in particular. The stated Project goal was to advance, demonstrate and accelerate deployment and commercialization of ORPC’s tidal-current based hydrokinetic power generation system, including the energy extraction and conversion technology, associated power electronics, and interconnection equipment capable of reliably delivering electricity to the domestic power grid. ORPC achieved this goal by designing, building and operating the TidGen® Power System in 2012 and becoming the first federally licensed hydrokinetic tidal energy project to deliver electricity to a power grid under a power purchase agreement in North America. Located in Cobscook Bay between Eastport and Lubec, Maine, the TidGen® Power System was connected to the Bangor Hydro Electric utility grid at an on-shore station in North Lubec on September 13, 2012. ORPC obtained a FERC pilot project license for the Project on February 12, 2012 and the first Maine Department of Environmental Protection General Permit issued for a tidal energy project on January 31, 2012. In addition, ORPC entered into a 20-year agreement with Bangor Hydro Electric Company on January 1, 2013 for up to 5 megawatts at a price of $215/MWh, escalating at 2.0% per year.

Sauer, Christopher R. [President & CEO] [President & CEO; McEntee, Jarlath [VP Engineering & CTO] [VP Engineering & CTO

2013-12-30

484

Ocean Surface Currents Glossary  

NSDL National Science Digital Library

This glossary provides short definitions of the oceanographic jargon used to describe ocean surface currents. It is designed to accompany the website "Ocean Surface Currents", a reference that provides information on surface currents in the world's oceans.

485

Environmental Impacts of Renewable Energy.  

E-print Network

??Selected non-renewable and renewable energy processes from the ecoinvent 2.2 life cycle inventory database were analysed using basic contribution analysis, geometric series expansion, and structural… (more)

Hung, Christine

2010-01-01

486

Renewable Systems Interconnection: Executive Summary  

SciTech Connect

The U.S. Department of Energy launched the Renewable Systems Interconnection (RSI) study in 2007 to address the challenges to high penetrations of distributed renewable energy technologies. The RSI study consists of 14 additional reports.

Kroposki, B.; Margolis, R.; Kuswa, G.; Torres, J.; Bower, W.; Key, T.; Ton, D.

2008-02-01

487

REGULATION SCOPING Alternative and Renewable  

E-print Network

REGULATION SCOPING PAPER Alternative and Renewable Fuel and Vehicle Technology Program, Statutes of 2007) created the Alternative and Renewable Fuel and Vehicle Technology Program (Program California's fuel and vehicle types. The Program will help meet the state's alternative fuel use

488

Staging Rankine Cycles Using Ammonia for OTEC Power Production  

SciTech Connect

Recent focus on renewable power production has renewed interest in looking into ocean thermal energy conversion (OTEC) systems. Early studies in OTEC applicability indicate that the island of Hawaii offers a potential market for a nominal 40-MWe system. a 40-MWe system represents a large leap in the current state of OTEC technology. Lockheed Martin Inc. is currently pursuing a more realistic goal of developing a 10-MWe system under U.S. Navy funding (Lockheed 2009). It is essential that the potential risks associated with the first-of-its-kind plant should be minimized for the project's success. Every means for reducing costs must also be pursued without increasing risks. With this in mind, the potential for increasing return on the investment is assessed both in terms of effective use of the seawater resource and of reducing equipment costs.

Bharathan, D.

2011-03-01

489

Renewable energy scenario in India  

Microsoft Academic Search

Prospects for renewable energy are steadily improving in India (% of total installed capacity is expected to be 10% by 2020). It is destined to take a leading role in the global renewable energy movement aiming towards sustainable development. Renewable energy programmes are especially designed to meet the growing energy needs in the rural areas for promoting decentralised and hybrid

D. P. Kothari

2000-01-01

490

COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM  

E-print Network

COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM OVERALL PROGRAM GUIDEBOOK Fifth Edition Gonçalves Office Manager Renewable Energy Office Dave Ashuckian, P.E. Deputy Director Efficiency and Renewable Energy Division Robert P. Oglesby Executive Director The California Energy Commission formally

491

COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM  

E-print Network

COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM OVERALL PROGRAM GUIDEBOOK Sixth Edition Gonçalves Office Manager Renewable Energy Office Dave Ashuckian, P.E. Deputy Director Efficiency and Renewable Energy Division Robert P. Oglesby Executive Director The California Energy Commission formally

492

Renewable energy today and tomorrow  

Microsoft Academic Search

Energy is essential to our society to ensure our quality of life and to underpin all other elements of our economy. Renewable energy technologies offer the promise of clean, abundant energy gathered from self-renewing resources such as the sun, wind, earth, and plants. Virtually all regions of the United States and the world have renewable resources of one type or

STANLEY R. BULL

2001-01-01

493

Renewables Portfolio Standard Procurement Plan  

E-print Network

Roseville, California 95747-9704 Reliable Energy. Dependable Service. #12;[2] 1. Introduction A Renewables Ex. Session, Ch. 1), the "California Renewable Energy Resources Act" and must be approved regarding Roseville's renewable energy resources procurement status and future plans for consideration

494

RENEWABLE ENERGY RESEARCH August 2010  

E-print Network

Integration PIER Renewable Energy Research The Issue Researchers at the Santa Rita Jail, in Dublin, California a renewable energy integrated systems approach that is capable of obtaining at least a 15 percent reduction of techniques and practical approaches to use for integrating multiple renewable energy resources. · Data about

495

Renewable energy sources 1991, part 3  

NASA Astrophysics Data System (ADS)

The Fourth International Conference on Renewable Energy Sources was held at Prague Technical University from 1-4 Jul. 1991. Part 3 of the proceedings contains a report on the conference and 10 contributions, of which 2 were inputted in INIS: one deals with the economic problems of wind-, solar- and oil-driven water pumps, the other deals with the decrease in sunshine brought about by the operation of Czechoslovak nuclear power plants.

Michalicka, L.

1991-12-01

496

Integration of Renewable Resources November 2007  

E-print Network

Integration of Renewable Resources November 2007 Transmission and operating issues and recommendations for integrating renewable resources on the California ISO-controlled Grid California Independent System Operator #12;CAISO Integration of Renewable Resources Members of the Renewables Workgroup

497

2011 Renewable Energy Data Book Energy Efficiency &  

E-print Network

Renewable and Alternative Fuels ........................................................ XI Clean Energy2011 Renewable Energy Data Book Energy Efficiency & Renewable Energy #12;Acknowledgments of the National Renewable Energy Laboratory (NREL). We greatly appreciate the input of Carla Frisch, Tien Nguyen

498

Energy Efficiency & Renewable Energy  

E-print Network

-and-trade pproggram to reduce greenhouse gas emissions 80 percent by 2050 · Make the US a leader on climate change Nuclear Energy (TBD for FY11) $100M $200M EERE FY03 FY04 FY05 FY06 FY07 FY08 FY09 FY10 FY11 REQUEST 1 FEEnergy Efficiency & Renewable Energy An Introduction to the 2010 Fuel Cell Pre

499

Financing investments in renewable energy: The role of policy design and restructuring  

SciTech Connect

The costs of electric power projects utilizing renewable energy technologies are highly sensitive to financing terms. Consequently, as the electricity industry is restructured and new renewables policies are created, it is important for policymakers to consider the impacts of renewables policy design on project financing. This report describes the power plant financing process and provides insights to policymakers on the important nexus between renewables policy design and finance. A cash-flow model is used to estimate the impact of various financing variables on renewable energy costs. Past and current renewable energy policies are then evaluated to demonstrate the influence of policy design on the financing process and on financing costs. The possible impacts of electricity restructuring on power plant financing are discussed and key design issues are identified for three specific renewable energy programs being considered in the restructuring process: (1) surcharge-funded policies; (2) renewables portfolio standards; and (3) green marketing programs. Finally, several policies that are intended to directly reduce financing costs and barriers are analyzed. The authors find that one of the key reasons that renewables policies are not more effective is that project development and financing processes are frequently ignored or misunderstood when designing and implementing renewable energy incentives. A policy that is carefully designed can reduce renewable energy costs dramatically by providing revenue certainty that will, in turn, reduce financing risk premiums.

Wiser, R.; Pickle, S. [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technologies Div.

1997-03-01

500

Effects of Long Period Ocean Tides on the Earth's Rotation  

NASA Technical Reports Server (NTRS)

The spectra of polar motion excitation functions exhibit enhanced power in the fortnightly tidal band. This enhanced power is attributed to ocean tidal excitation. Ocean tide models predict polar motion excitation effects that differ with each other, and with observations, by factors as large as 2-3. There is a need for inproved models for the effect of long-period ocean tides on Earth's rotation.

Gross, Richard S.; Chao, Ben F.; Desai, Shailen D.

1996-01-01