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Search Publications by: Piotr A. Domanski (Assoc)

Displaying 176 - 187 of 187

Evaluation of Suction Line-Liquid Line Heat Exchange in the Refrigeration Cycle

January 1, 1994

Author(s)

Piotr A. Domanski, David Didion, J. P. Doyle

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 whether the

Glide Matching With Binary and Ternary Zeotropic Refrigerant Mixtures. Part 1. An Experimental Study

January 1, 1994

Author(s)

W. J. Mulroy, Piotr A. Domanski, David Didion

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

Glide Matching With Binary and Ternary Zeotropic Refrigerant Mixtures. Part 2. A Computer Simulation

January 1, 1994

Author(s)

Piotr A. Domanski, W. J. Mulroy, David Didion

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 conducted

Simulation of an Evaporator with Nonuniform One-Dimensional Air Distribution

January 13, 1991

Author(s)

Piotr A. Domanski

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 distribution

EVSIM: An Evaporator Simulation Model Accounting for Refrigerant and One Dimensional Air Distribution (NISTIR 89-4133)

August 1, 1989

Author(s)

Piotr A. Domanski

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 refrigerant

An Experimental Investigation and Modeling of the Flow Rate of Refrigerant 22 Through the Short Tube Restrictor (NISTIR 89-4120)

July 1, 1989

Author(s)

D. A. Aaron, Piotr A. Domanski

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

Rating procedure for mixed air-source unitary air conditioners and heat pumps operating in the cooling mode - revision 1

May 1, 1989

Author(s)

Piotr A. Domanski

A procedure is presented for determining the cooling performance ratings of air-source unitary air conditioners and heat pumps consisting of a condensing unit and an indoor section which were not tested together as a system. The procedure allows

Rating of Mixed Split Residential Air Conditioners

September 13, 1988

Author(s)

Piotr A. Domanski

A methodology is presented for rating the performance of mixed, split residential air conditioners. The method accounts for the impact on system performance of the indoor evaporator, expansion device and fan; three major components that are likely to be

Exergy Analysis of Heat Pumps

January 1, 1987

Author(s)

T. L. Tsaros, R. A. Gaggioli, Piotr A. Domanski

The HPSIM computer program for modeling heat pumps (Domanski and Didion 1983) has been augmented to include exergy analysis. Exergy transports between the components, to the loads, and to the environment are evaluated. The exergy consumptions in each

Simulation of a Heat Pump Operating With a Nonazeotropic Mixture

June 1, 1985

Author(s)

Piotr A. Domanski, David Didion

This paper provides an overview of the model developed for simulation of steady -state performance of a heat pump working with a nonazeotropic binary mixture. The modeled heat pump consists of a hermetic, reciprocating compressor, flat-finned tube heat

Equation-of-State-Based Thermodynamic Charges for Nonazeotropic Refrigerant Mixtures

January 1, 1985

Author(s)

Piotr A. Domanski, David Didion

Application of a nonazeotropic mixture to a refrigeration machine offers a new degree of freedom in controlling machine performance by control of circulating mixture composition. Presenting possible thermodynamic cycles of such a machine operating with

Computer Modeling of the Vapor Compression Cycle With Constant Flow Area Expansion Device. Final Report (NBS Building Science Series 155)

May 1, 1983

Author(s)

Piotr A. Domanski, David Didion

An analysis of the vapor compression cycle and the main components of an air source heat pump during steady-state operation has been performed with emphasis on fundamental phenomena taking place between key locations in the refrigerant system. The basis of

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