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Author: piotr domanski

Displaying records 121 to 130 of 136 records.
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121. Intracycle Evaporative Cooling in a Vapor Compression Cycle (NISTIR 5873)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5873
Published: 9/1/1996
Authors: B. S. Kim, Piotr A Domanski
Abstract: The temperature glide of zeotropic mixtures during phase change provides the opportunity to limit throttling losses of the refrigeration cycle by intracycle evaporative cooling of the refrigerant leaving the condenser. Intracycle evaporative cooling ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910511

122. Minimizing Throttline Losses in the Refrigeration Cycle
Published: 8/1/1995
Author: Piotr A Domanski
Abstract: Most alternative non-CFC refrigerants have a large molecular structure and large heat capacity, which influence the slope of saturated liquid line and result in substantial throttling losses in a basic reversed Rankine cycle. These losses degrade the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910532

123. Theoretical Evaluation of the Vapor Compression Cycle With a Liquid-Line/Suction-Line Heat Exchanger, Economizer, and Ejector (NISTIR 5606)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5606
Published: 3/1/1995
Author: Piotr A Domanski
Abstract: The report presents a theoretical analysis of three vapor compression cycles which are derived from the Rankine cycle by incorporating a liquid-line/suction-line heat exchanger, economizer, or ejector. These addendums to the basic cycle reduce thrott ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910533

124. Simulation Model and Study of Hydrocarbon Refrigerants for Residential Heat Pump Systems
Published: 5/10/1994
Authors: Piotr A Domanski, David Didion, W. J. Mulroy, J Parise
Abstract: To conduct a systematic study of Natural Fluids as working fluids for heat pumping applications, it was necessary for NIST to simultaneously expand its analytical tools and evaluate what design changes American industry would most readily accept. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910584

125. Evaluation of Suction Line-Liquid Line Heat Exchange in the Refrigeration Cycle
Published: 1/1/1994
Authors: Piotr A Domanski, David Didion, J. P. Doyle
Abstract: The paper presents a theoretical evaluation of the performance effects resulting from the installation of a liquid-line/suction-line heat exchanger (LLSL-HX). It examines cycle parameters and refrigerant thermodynamic properties that determine wheth ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910591

126. Glide Matching With Binary and Ternary Zeotropic Refrigerant Mixtures. Part 1. An Experimental Study
Published: 1/1/1994
Authors: W. J. Mulroy, Piotr A Domanski, David Didion
Abstract: An improvement of the coefficient of performance (COP) of the refrigeration cycle can be realized when temperature profiles of the refrigerant mixture and the heat transfer fluid (HTF) are matched. For the same temperature lift, the benefit of glide ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910586

127. Glide Matching With Binary and Ternary Zeotropic Refrigerant Mixtures. Part 2. A Computer Simulation
Published: 1/1/1994
Authors: Piotr A Domanski, W. J. Mulroy, David Didion
Abstract: The glide-matching study presented in Part 1 was a laboratory investigation which demonstrated the evaporator performance in detail. However, since it was not possible to instrument the condenser sufficiently, some computer simulation work was conduc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910587

128. Simulation of an Evaporator with Nonuniform One-Dimensional Air Distribution
Published: 1/13/1991
Author: Piotr A Domanski
Abstract: This paper presents a simulation model of a plate-fin, air-to-refrigerant heat exchanger used as an evaporator in residential air conditioning. The model can account for nonuniform air-distribution between coil tubes and simulates refrigerant distri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915253

129. EVSIM: An Evaporator Simulation Model Accounting for Refrigerant and One Dimensional Air Distribution (NISTIR 89-4133)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 89-4133
Published: 8/1/1989
Author: Piotr A Domanski
Abstract: The report describes a computer model, EVSIM, of a refrigerant-to-air heat exchanger of the type used in residential air conditioning as an evaporator. The model provides performance predictions of a one-slab or two-slab evaporator for a given refrig ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910659

130. An Experimental Investigation and Modeling of the Flow Rate of Refrigerant 22 Through the Short Tube Restrictor (NISTIR 89-4120)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 89-4120
Published: 7/1/1989
Authors: D. A. Aaron, Piotr A Domanski
Abstract: Refrigerant 22 flow through short tube restrictors was investigated. The analysis pertained to initially subcooled refrigerant flowing through short tubes with 5 < L/D < 20. The flow conditions studied were those typically found in heat pumps. Flow ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910660



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