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Topic Area: High Performance Buildings
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Displaying records 61 to 70 of 124 records.
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61. 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

62. 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

63. 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

64. 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

65. 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

66. 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

67. Viscosity and Density of CuO Nanolubricant
Topic: High Performance Buildings
Published: 6/23/2009
Author: Mark A Kedzierski
Abstract: This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester based copper (II) oxide (CuO) nanoparticle dispersion (nanolubricant) at atmospheric pressure for a temperature range from approximately 288 K to 318 K ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901583

68. Substrate-dependent interface composition and charge transport in films for organic photovoltaics
Topic: High Performance Buildings
Published: 6/9/2009
Authors: David Germack, Calvin Chan, Behrang H Hamadani, Lee J Richter, Daniel A Fischer, David J Gundlach, Dean M DeLongchamp
Abstract: The buried interface composition of polymer-fullerene blends is found by near edge X ray absorption fine structure (NEXAFS) spectroscopy to depend on the surface energy of the substrate upon which they are cast. The interface composition determines ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902284

69. Number Fluctuations and Energy Dissipation in Sodium Spinor Condensates
Topic: High Performance Buildings
Published: 6/5/2009
Authors: Yingmei Liu, Eduardo NMN Gomez, Stephen E Maxwell, Lincoln David Turner, Eite Tiesinga, Paul D Lett
Abstract: We characterize fluctuations in atom number and spin populations in F = 1 sodium spinor condensates. The time evolution of the population fluctuations shows a maximum. We interpret this as evidence of a dissipation-driven separatrix crossing in pha ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902339

70. CYCLE_D VERSION 4.0: Theoretical Vapor Compression Cycle Design Program
Topic: High Performance Buildings
Published: 4/9/2009
Authors: J S Brown, Piotr A Domanski, Eric W Lemmon
Abstract: This paper presents Version 4.0 of the CYCLE_D: NIST Vapor Compression Cycle Design Program. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat exchanger. In additio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901543



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