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Author: piotr domanski

Displaying records 101 to 110 of 129 records.
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101. A Study of a Water-To-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6330
Published: 5/1/1999
Authors: William V Payne, Piotr A Domanski, J Muller
Abstract: This investigation compared the performance of R22 to the performance of propane (R290) and zeotropic mixtures of HFC's and hydrocarbons in a water-to-water heat pump. Baseline testing began with R22 and proceeded to R290, R32/290, R32/152a, and R290 ...

102. Evolution of Refrigerant Application
Published: 5/1/1999
Author: Piotr A Domanski
Abstract: The paper reviews the development of chlorofluorocarbon refrigerants, the implemented replacements of ozone-depleting fluids, other considered alternatives, and the prospect for next-generation refrigerants in response to climate change concerns. Con ...

103. Refrigerants for the 21st Century. ASHRAE/NIST. Refrigerants Conference. Gaithersburg MD, October 6-7, 1997. (Conference Report)
Published: 10/6/1998
Author: Piotr A Domanski
Abstract: The "Refrigerants for the 21st Century" conferece was the third refrigerants conference jointly organized by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) and the National Institute of Standards and Technology ...

104. Refrigerants for the 21st Century / ASHRAE/NIST Refrigerants Conference
Series: Journal of Research (NIST JRES)
Published: 9/1/1998
Author: Piotr A Domanski
Abstract: The goal of the 1997 ASHRAE/NIST Refrigerants Conference was to review available air-conditioning and refrigeration options in response to ozone depletion, global warming, and technology advances. The two-day program consisted of 16 invited comprehe ...

105. Potential Coefficient of Performance Improvements due to Glide Matching With R-407C
Published: 7/1/1998
Authors: M E Marques, Piotr A Domanski
Abstract: Potential improvements of the Coefficient of Performance (COP) were investigated for R-407C at cooling and heating conditions of a residential heat pump. The study used CYCLE-11, a semi-theoretical vapor-compression cycle model, which was upgraded t ...

106. A Study of a Water-to-Water Heat Pump Using Flammable Refrigerants
Published: 6/1/1998
Authors: William V Payne, Piotr A Domanski, J Muller
Abstract: This investigation compared the performance of R22 to the performance of R290 and that of flammable zeotropic mixtures, R32/290 and R32/152a. The tests were conducted in a test apparatus specially designed to simulate a residential water-to-water hea ...

107. Method for Estimating the Energy Efficiency Ratio of Mixed System Air Conditioners and Heat Pumps (NISTIR 6045)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6045
Published: 9/1/1997
Authors: Piotr A Domanski, B. S. Kim
Abstract: In lieu of testing each split system air conditioner and heat pump combination, an empirically based calculation procedure may be used for estimating a unit's Energy Efficiency Ratio at the 35 deg C (95 deg F) rating condition, EER(95). The procedure ...

108. Ternary Zeotropic Mixture With CO2 Component for R-22 Heat Pump Application
Published: 8/30/1997
Authors: K Maczeck, J Muller, K Wojtas, Piotr A Domanski
Abstract: The objective of this research project was to demonstrate a successful operation of a high efficiency heat pump employing a zeotropic mixture with a zero ozone-depletion and a small greenhouse warming potential (ODP and GWP, respectively). The projec ...

109. Impact of Air and Refrigerant Maldistributions On the Performance of Finned-Tube Evaporators With R-22 and R-407C
Series: OTHER
Published: 7/1/1997
Authors: J Lee, Piotr A Domanski
Abstract: The report presents basic features of the evaporator model, EVAP5M, and simulation results for an evaporator operating with R-22 and R-407C at non-uniform air and refrigerant distributions. EVAP5M was developed under this project to provide a tool fo ...

110. Performance of R-22 Alternative Refrigerants in a System With Cross-Flow and Counter-Flow Heat Exchangers (NISTIR 5945)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5945
Published: 1/1/1997
Authors: M H Kim, Piotr A Domanski, David Didion
Abstract: This report presents results of performance tests of R-22 and four alternative fluids, R-134a, R-32/134a (30/70), R-407C, and R-410A, at operating conditions typical for a residential heat pump. The study was performed in an experimental breadboard w ...

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