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Topic Area: High Performance Buildings
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Displaying records 61 to 70 of 128 records.
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61. Assessing the Measurement Uncertainty of Thermophysical Properties
Topic: High Performance Buildings
Published: 9/2/2009
Author: Robert R Zarr
Abstract: A generalized approach for the expression of measurement uncertainty consistent with current international practice is presented. The approach is applicable to all kinds of quantitative measurements including measurements of thermophysical propertie ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902139

62. Soft X-ray Characterization Technique for Li Batteries under Operating Conditions
Topic: High Performance Buildings
Published: 9/1/2009
Authors: Daniel A Fischer, Cole Petersburg, Robert Daniel, Cherno Jaye, Faisal Alamgir
Abstract: O K edge and Co L edge near edge X-ray absorption fine structure (NEXAFS) was used to examine the cathode of an intact solid-state lithium ion battery. The novel technique allowed for the simultaneous acquisition of partial electron yield and fluores ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902383

63. Glassy Carbon as an Absolute Intensity Calibration Standard for Small Angle Scattering
Topic: High Performance Buildings
Published: 8/19/2009
Authors: Andrew John Allen, Jan Ilavsky, Fan Zhang, Gabrielle G Long, Pete R. Jemian
Abstract: Absolute calibration of small-angle scattering (SAS) intensity data (in units of differential cross-section per unit sample volume per unit solid angle) is essential for many important aspects of quantitative SAS analysis, such as obtaining the numbe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901709

64. Blow-Down Tests Confirm Accurate Critical Flow Venturi Measurements During Transients
Topic: High Performance Buildings
Published: 8/14/2009
Author: John D Wright
Abstract: Critical flow venturis (CFVs) can be used to measure flow under transient pressure, temperature, and flow conditions with k=2 uncertainties of 0.4 % or less. Blow-down tests transferred 630 g of nitrogen during a 100 s interval from an unregulated cy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903281

65. Comparison of Five Natural Gas Equations of State Used for Flow and Energy Measurement
Topic: High Performance Buildings
Published: 8/14/2009
Authors: Aaron N Johnson, William Johansen
Abstract: Measurements of the flow and the energy content of natural gas rely on equations of state to compute four thermodynamic properties: 1) compressibility factor; 2) critical flow factor; 3) speed of sound; and 4)isentropic exponent. We compare these com ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903432

66. Dynamic Gravitational Standard for Liquid Flow: Model and Measurements
Topic: High Performance Buildings
Published: 8/14/2009
Authors: Iosif I Shinder, Michael R Moldover
Abstract: We report progress in testing a dynamic gravimetric standard using both steady and unsteady water flows. For steady flows in the range 10 kg/s to 60 kg/s, the difference between the dynamic standard and NIST s static primary standard was 0.015 % wit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903358

67. The Calculation of Natural Gas Viscosity
Topic: High Performance Buildings
Published: 8/14/2009
Authors: Aaron N Johnson, William Johansen
Abstract: The calculation of natural gas viscosity has been implemented many different ways including the use of constants. Different methods of calculating natural gas viscosity may produce values with differences as large as 50%. Increasing natural gas price ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903462

68. High Definition Flow
Topic: High Performance Buildings
Published: 8/1/2009
Authors: John D Wright, Michael R Moldover
Abstract: From pharmaceutical production to the natural gas market, exact flow measurements are critical. Here's how NIST helps keep us all on the same page.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832391

69. The Virtual Cybernetic Building Testbed-A Building Emulator
Topic: High Performance Buildings
Published: 7/16/2009
Authors: Steven T Bushby, Michael A Galler, Natascha Sylvia Milesi-Ferretti, Cheol D. Park
Abstract: Building emulators couple computer simulations to real control hardware, creating a useful tool for studying building control system performance. The National Institute of Standards and Technology's Virtual Cybernetic Building Testbed (VCBT) is a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902653

70. CYCLE_D: NIST Vapor Compression Cycle Design Program Version 4.0 Users' Guide
Series: OTHER
Topic: High Performance Buildings
Published: 6/23/2009
Authors: J S Brown, Piotr A Domanski, Eric W Lemmon
Abstract: The CYCLE_D package simulates vapor compression refrigeration cycles that use pure refrigerants or mixtures of refrigerants. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-l ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901480



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