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Author: william payne

Displaying records 21 to 30 of 38 records.
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21. A Curve-Based Mixed System Rating Method for Unitary Air Conditioners
Series: Journal of Research (NIST JRES)
Report Number: 7225
Published: 5/2/2005
Authors: William V Payne, Piotr A Domanski
Abstract: The curve-based method was evaluated based on performance predictions for nine mixed systems, which were also tested by an independent testing laboratory. Capacity predictions were within 5% of the tested values for six of nine mixed systems, and f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860973

22. Vibration Signatures for Three Positive Displacement Compressors
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7183
Published: 12/1/2004
Authors: David A Yashar, William V Payne
Abstract: This report presents vibration data for three positive displacement compressors which will be used to evaluate Microelectromechanical Systems (MEMS) vibration sensors at a later time. The axial, radial and tangential vibration signatures of three co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860964

23. A Mass Flow Rate Correlation for Refrigerants and Refrigerant Mixtures Flowing Through Short Tubes
Published: 1/1/2004
Authors: William V Payne, D L O'Neal
Abstract: A correlation was developed for mass flowrate of R12, R134a, R502, R22, R407C, and R410A through short tubes. Sort tube lengths ranged from 9.5 mm to 25.4 mm, and sharp edged diameters ranged from 1.09 mm to 1.94 mm. The correlation covered both si ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860914

24. A Study of In-Tube Evaporation Heat Transfer of Carbon Dioxide
Published: 8/17/2003
Authors: N N Sawant, M Kim, William V Payne, Piotr A Domanski, Y W Hwang
Abstract: The evaporative heat transfer characteristics of carbon dioxide (CO^d2^) were measured in a fluid-heated, 8.0 mm ID smooth stainless steel tube. The test apparatus was a concentric tube heat exchanger heated by water in the annulus with CO^d2^ in th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860915

25. Effects of Non-Uniform Refrigerant and Air Flow Distributions on Finned-Tube Evaporator Performance.
Published: 8/17/2003
Authors: J M Choi, William V Payne, Piotr A Domanski
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101203

26. Study of In-Tube Evaporation Heat Transfer of Carbon Dioxide.
Published: 8/17/2003
Authors: N N Sawant, Min S. Kim, William V Payne, Piotr A Domanski, Y W Hwang
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101211

27. Effects of Non-Uniform Air Flow on Finned-Tube Evaporator Performance
Published: 8/1/2003
Authors: John Choi, William V Payne, Piotr A Domanski
Abstract: An experimental investigation was implemented to determine the capacity degradation due to non-uniform refrigerant and air flow distributions, and to assess the potential to recover the lost capacity via controlling refrigerant distribution between i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860899

28. Potential Benefits of Smart Refrigerant Distributors
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6946
Published: 1/1/2003
Authors: William V Payne, Piotr A Domanski
Abstract: The main goal of this study was to investigate the benefits possible for finned tube refrigerant evaporators when refrigerant distribution was precisely controlled to produce a desired equal superheat in each circuit. This goal was accomplished by e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860897

29. Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point
Published: 9/1/2002
Authors: Piotr A Domanski, William V Payne
Abstract: Performance of R22 and R410A split air conditioners was evaluated experimentally at the ambient temperature range from 82 F to 135 F. Capacity and EER decreased as the outdoor temperature increased. The capacity of the R410A system relative to th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860865

30. Comparison of an R22 and an R410A Air Conditioner Operating at High Ambient Temperatures.
Published: 7/16/2002
Authors: William V Payne, Piotr A Domanski
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101209



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