Two field studies were conducted in a university classroom in the autumn of 2004 in Harbin. The objective of these studies was to assess the thermal conditions and the subjective effects on occupant thermal comfort. A field study was carried out when the undergraduate students were not taught the theory of thermal ...
E-print Network
The report discusses the indoor temperature ranges found acceptable by occupants of buildings controlled by passive means, in areas where the influence of land mass dominates the local climate.
National Technical Information Service (NTIS)
Six subjects participated in a study to measure physiological and subjective responses to the wearing of half facepiece respirators under various room and respirator air conditions. Room air temperatures varied from 25 to 30 to 35 C, while the correspondi...
This standard specifies desirable and generally acceptable thermal environmental conditions for comfort for sedentary and slightly active, healthy, normally clothed people in the United States and Canada at altitudes of sea level to 7,000 feet. This standard does not specify values for the non-thermal environmental ...
Energy Citations Database
The classrooms in Chongqing are taken as a study subject in this paper. Measurements of the indoor thermal environmental parameters, e.g., indoor dry/wet bulb temperature, and air velocity, were taken. Combined with the questionnaire, which included the thermal sense value of the occupants, the winter classroom thermal environment was ...
... thermal energy recovery testing was also ... of the acceptance test procedure, the ... RECOVERY, *ACCEPTANCE TESTS, VOLUME, ENVIRONMENTS ...
DTIC Science & Technology
The outgassing characteristics of electrodeposited black chromium were determined because of interest in using this coating in vacuum applications. Data obtained for a variety of conditions led to the conclusion that this coating is acceptable for use in ...
Thermal responses in a production brazing furnace can be very difficult to predict or measure due to changing loading and heating conditions. An efficient approach to determining acceptable furnace brazing cycles is to apply computational models that can ...
Building ventilation and air conditioning systems have traditionally been designed and controlled to maintain occupant thermal comfort at acceptable capital and operating costs, an indoor air quality (IAQ) has not been a primary concern. A literature revi...
To help determine the capability range of a MEMS optical microphone design in harsh conditions computer simulations were carried out. Thermal stress modeling was performed up to temperatures of 1000 C. Particular concern was over stress and strain profiles due to the coefficient of thermal expansion mismatch between the polysilicon ...
The problems of experimentally studying the effects of thermal stresses in beryllium oxide are considered in detail. Several ways of producing thermal stresses in hollow cylinders are described and the theoretical stress equations are given for these conditions. Theoretical treatment and practical considerations indicate that ...
... Descriptors : , (*LAMINATED PLASTICS, THERMAL INSULATION), (*THERMAL INSULATION, ACCEPTABILITY), (*GLASS TEXTILES ...
Human perception and annoyance due to background noise has been the subject of much research. A great deal of work has also been done to identify conditions that produce an acceptable thermal environment for building occupants. The experience of occupants in indoor environments, however, is much more complex than can be represented by ...
NASA Astrophysics Data System (ADS)
This project demonstrates that energy consumption for air conditioning can be reduced while still maintaining acceptable comfort for building occupants. The primary purpose of air conditioning is to provide a comfortable environment. However, in an era where energy cost and availability are key concerns, the goal is to provide maximum ...
The use of heat pipes and loop heat pipes (LHPs) as thermal control devices in satellites and other spacecrafts have increased considerably during the last decades. Due to the need of a crescent demand on heat dissipation, more of these devices have been used in low orbit and geo-stationary satellites to promote the adequate thermal control for the ...
The 9975 shipping package incorporates a cane fiberboard overpack for thermal insulation and impact resistance. Thermal properties (thermal conductivity and specific heat capacity) have been measured on cane fiberboard and a similar wood fiber-based product at several temperatures representing potential storage ...
A spreadsheet program for determining system efficacy, power input and light output of common 4 ft fluorescent lighting systems under realistic operating conditions is described. The program uses accepted IES engineering principles to precisely account for ballast factor, existing thermal conditions and maintenance ...
... Acceptance of Medium Tactical Vehicles Report No. D-2008-038 ... Page 17. 6 A. Conditional Acceptance of Family of Medium Tactical Vehicles ...
... Title : PRELIMINARY INVESTIGATION OF THERMAL CONDITIONS INSIDE LARGE LIQUID OXYGEN CONTAINER EXPOSED TO CLIMATIC ...
The development, fabrication, and evaluation of heat pipe thermal conditioning panels are discussed.
NASA Technical Reports Server (NTRS)
... THERMAL ANALYSIS OF A POWER CONDITIONING UNIT FOR A HOWITZER ... 6 Summary of failed components based on thermal analysis 7 ...
An analysis of the NAHB Thermal Performance Guidelines for One and Two Family Dwellings is presented, relative to the following thermal performance guideline methodologies: thermal performance in existing homes (conventional); HUD Minimum Property Standards (MPS); American Society of Heating, Refrigerating, and Air ...
The objective of Task 2 is to develop a numerical method for the efficient and accurate analysis of distributed thermal perturbation sensing (DTPS) data for (1) imaging flow profiles and (2) in situ determination of thermal conductivities and heat fluxes. Numerical forward and inverse modeling is employed to: (1) Examine heat and fluid flow processes near ...
DOE Information Bridge
Component qualification and acceptance temperatures are derived from worst case thermal analyses and
An analytic parametric scoping tool has been developed for application to first wall (FW) design problems. Both thermal and disruption force effects are considered. For the high heat flux and high disruption load conditions expected in the International Thermonuclear Experimental Reactor (ITER) device, Vanadium alloy and dispersion-strengthened copper ...
This document is intended to serve as a basis for the US Department of Energy's (DOE's) multilayer plan for research on thermal distribution and utilization (TDU). In this document, the areas of research included under the heading of thermal distribution and utilization are defined, their benefits are shown, and a ten-year program of ...
this paper. Recently, measurements of thermal conductivity of a 5 m-thick deposited "mat" of SWNTs were reported for randomly oriented [5] or magnetically aligned conditions [6]. Comparing with the temperature dependence of electrical conductance in the same condition, it was concluded that the contribution of electrons to the ...
An active grating based on a novel optical concept with bendable polynomial surface profile to reduce the coma and defocus aberrations had been designed and proved by the prototype testing. Due to the low glass transition temperature of the glue and the difference of thermal expansion coefficient between the 17-4 steel bender and silicon, the prototype distorted from flat ...
Based on observations during the steam reforming of ethanol, the authors conclude that carbon was forming in the steam generator due to the thermal decomposition of ethanol. Since ethanol is being thermally decomposed, they were operating the steam generator at too high of a temperature. The thermal degradation of ethanol was confirmed ...
The outgassing characteristics of electrodeposited black chromium were determined because of interest in using this coating in vacuum applications. Data obtained for a variety of conditions led to the conclusion that this coating is acceptable for use in optical-transport networks and plasma-physics experiments. The outgassing rate for an unbaked coating ...
This paper describes Mound Laboratory`s environmental testing operations. The function of environmental testing is to perform quality environmental (thermal, mechanical, spin, resistance, visual) testing/conditioning of inert/explosive products to assure their compliance with specified customer acceptance criteria. Capabilities, ...
Experimental and analytical studies were conducted to determine the acceptability of a ribbon-burner simulation of engine conditions for testing ceramic-lined turbine tip shrouds. The calculated values reveal that the ribbon burner establishes at least as harsh a thermal environment as is present at any time within the turbine shroud. ...
Methods of assessing the uniformity of thermal and fast neutron fluence in relation to total body in vivo neutron activation analysis are described. Results are presented for 14 MeV neutrons emitted by sealed tube generators housed in a massive concrete shield, representing a substantial source of neutrons degraded in energy. Optimisation of conditions for ...
PubMed
The deposition of electromagnetic energy as heat in all of the human body, or in specific parts of it is one of the specific conditions which lend themselves uniquely to a preliminary evaluation through simulation modeling. In general the use of one of the widely accepted models of thermoregulation to evaluate the thermal effects of ...
Prescribed steps are given for flushing and steam blowing the condenser hotwell, deaerator, inline demineralizers, thermal storage subsystem flash tank, and steam lines of the Barstow Solar Pilot Plant. Included are acceptance criteria, precautions, a list of test equipment, initial conditions, procedures and data collection, and ...
... Accession Number : ADA366656. Title : Acceptance Testing Procedures for Heating, Ventilating, and Air-Conditioning Systems. ...
Capability to undergo acceptance thermal testing (if required) ..... Thermal Testing ). 12. Note 2: Equal to or hotter than 71 C ( 160 F) for ...
NASA Website
Thermal diffusion of (57)Co into rhodium matrix was studied. The diffusion degree was evaluated by M�ssbauer spectroscopy with the use of ?-Fe absorber. The influence of different annealing conditions was investigated. For a set of sources examined, smooth and rounded Lorentzian lines were observed. The main spectra parameters are fairly ...
The thermal response of fixtured parts in a batch-type brazing furnace can require numerous, time-consuming development runs before an acceptable furnace schedule or joint design is established. Powerful computational simulation tools are being developed to minimize the required number of verification experiments, improve furnace throughput, and increase ...
The vertical divergences of bending magnet and wiggler synchrotron sources are generally considerably larger than the acceptance angles of typical monochromator systems. This is particularly true at high energies (E greater than or equal to 14 keV) where the Darwin widths of perfect crystals are of the order 10/sup -6/ radians. By imposing a thermal ...
Prior to commercial operation, large solar systems in utility-size power plants need to pass a performance acceptance test conducted by the engineering, procurement, and construction (EPC) contractor or owners. In lieu of the present absence of ASME or other international test codes developed for this purpose, the National Renewable Energy Laboratory has undertaken the ...
A thermal comfort field study has been carried out in five cities in the humid subtropical climate zone in China. The survey was performed in naturally ventilated and air-conditioned buildings during the summer season in 2006. There were 229 occupants from 111 buildings who participated in this study and 229 questionnaire responses were collected. ...
Sofradir has built an infrared detector dewar assembly (DDA) capable of operating under various environmental conditions corresponding to various applications. In this paper it is shown that Sofradir DDA retain their performance for FLIR applications (ground vehicle, helicopter, or aircraft) as well as seeker applications. In particular, Sofradir DDAs permit the user to meet ...
This work presents an acceptable model for heat losses in the home. An hour-by-hour, steady state model receives, as an input, the outside weather conditions and gives, as an output, the hourly heating load. The home and its duct work is shown. Its design load, at the wintertime design conditions of the test side (-16.1/sup 0/C), is ...
The design has been completed for a new-generation Reversed-Field Pinch machine to be assembled at the Los Alamos National Laboratory during FY 1992. The Confinement Physics Research Facility (CPRF) houses the front-end ZTH torus. A series of simulations has been performed to predict temperature levels for various elements within the front end of the CPRF/ZTH apparatus for bakeout ...
an absence of moderation caused by homophobia and heterosexism. These oppressions cast a shadow on LGBTQ homophobia, acceptance of substandard conditions in their life world, and dismissal of oppressive treatment Homophobia, Acceptance of Substandard Conditions in Their Lifeworlds, and Dismissal of Oppression Some ...
This paper evaluates the cooling performance and thermal comfort of a compact thermoelectric (TE) air conditioner. The compact TE air conditioner is composed of three TE modules. The cold and hot sides of the TE modules were fixed to rectangular fin heat sinks and fans. Thermal acceptability assessment was performed to find out whether ...
This paper presents a thermal comfort study in a naturally ventilated residential building located in a tropical hot-humid climate region. The specific objective of this study is to investigate whether thermal comfort in this house can be achieved through a passive system only. The methods used in this study included conducting hourly monitoring of the ...
Recent HVAC design innovations, energy conservation concerns and new laboratory data on drafts have brought substantial attention to the issue of acceptable levels of air movement in office environments. Air movement may provide desirable cooling in warm conditions, but it may also increase the risk of unacceptably cool drafts. Detectable air movement may ...
The effects of environmental and individual factors on thermal sensation in air-conditioned office environments were analysed for two large, fully compatible thermal comfort field studies in contrasting Australian climates. In the hot - humid location of Townsville, 836 office workers were surveyed; 935 workers participated in hot - ...
Sandia National Laboratories (SNL) has designed a crash-resistant container, the Perforated Metal Air Transportable Package (PMATP), capable of surviving a worst-case plane crash, including both impact and subsequent fire, for the air transport of plutonium. This report presents thermal analyses of the full-scale PMATP in its undamaged (pre-test) condition ...
... Parametric thermal stress data for grains with varying dimensions subjected to step thermal conditioning and ... A. Thermoviscoelastic Stress Analysis ...
... Title : Thermal Conditioning of the AEOS Telescope. ... Abstract : The AEOS telescope facility was designed for high angular resolution imagery. ...
... Accession Number : AD0630288. Title : THE CONDITION OF COMBUSTION IN NON-THERMAL ACTIVATION OF COMBUSTIBLE MIXTURE,. ...
Results are presented from more than 1500 hours of testing on a liquid hydrogen thermal conditioning
... Title : Estimation of Fracture Conditions of Ceramics by Thermal Shock with Laser Beams based on the Maximum Compressive Stress Criterion. ...
... Title : ON THE THERMAL INSTABILITY OF FLUID LAYERS HEATED FROM BELOW; EQUATIONS OF MOTION AND BOUNDARY CONDITIONS. ...
