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Search Publications by: Piotr A. Domanski (Assoc)

Displaying 301 - 325 of 361

A Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures With and Without an Internal Heat Exchanger

January 1, 2000

Author(s)

William V. Payne, Piotr A. Domanski, E A. Silk

This investigation overviews the comprehensive results of the experimental study pertaining to flammable refrigerant alternatives in water-to-water heat pumps for building and home applications. In contrast to the comprehensive fluid survey of the initial

Finned-Tube Evaporator Model With a Visual Interface

September 19, 1999

Author(s)

Piotr A. Domanski

This paper presents a finned-tube evaporator model and its utility when equipped with a window-based interface. The modeling scheme is tube-by-tube and allows for specification of complex refrigerant circuits, modeling refrigerant distribution between

A Study of a Water-To-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures

May 1, 1999

Author(s)

William V. Payne, Piotr A. Domanski, J Muller

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 R290/600a

Evolution of Refrigerant Application

May 1, 1999

Author(s)

Piotr A. Domanski

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

Refrigerants for the 21st Century. ASHRAE/NIST. Refrigerants Conference. Gaithersburg MD, October 6-7, 1997. (Conference Report)

October 6, 1998

Author(s)

Piotr A. Domanski

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. The

ASHRAE/NIST Refrigerants Conference: Refrigerants for the 21st Century. Gaithersburg MD, October 6-7, 1997. Conference Report.

September 30, 1998

Author(s)

Piotr A. Domanski

Refrigerants for the 21st Century / ASHRAE/NIST Refrigerants Conference

September 1, 1998

Author(s)

Piotr A. Domanski

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 comprehensive

Potential Coefficient of Performance Improvements due to Glide Matching With R-407C

July 1, 1998

Author(s)

M E. Marques, Piotr A. Domanski

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 to

A Study of a Water-to-Water Heat Pump Using Flammable Refrigerants

June 1, 1998

Author(s)

William V. Payne, Piotr A. Domanski, J Muller

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 heat pump

Method for Estimating the Energy Efficiency Ratio of Mixed System Air Conditioners and Heat Pumps (NISTIR 6045)

September 1, 1997

Author(s)

Piotr A. Domanski, B. S. Kim

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

Ternary Zeotropic Mixture With CO2 Component for R-22 Heat Pump Application

August 30, 1997

Author(s)

K Maczeck, J Muller, K Wojtas, Piotr A. Domanski

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 project

Impact of Air and Refrigerant Maldistributions On the Performance of Finned-Tube Evaporators With R-22 and R-407C

July 1, 1997

Author(s)

J Lee, Piotr A. Domanski

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 for

Performance of R-22 Alternative Refrigerants in a System With Cross-Flow and Counter-Flow Heat Exchangers (NISTIR 5945)

January 1, 1997

Author(s)

M H. Kim, Piotr A. Domanski, David Didion

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 water