Main Title |
A transient and steady state study of pure and mixed refrigerants in a residential heat pump / |
Author |
Judge, John. ;
Hwang, Y. ;
Radermacher, R.
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Other Authors |
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CORP Author |
Maryland Univ., College Park. Center for Environmental Energy Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div. |
Publisher |
U.S. Environmental Protection Agency, Air Pollution Prevention and Control Division, |
Year Published |
1996 |
Report Number |
EPA/600/4-96/129; EPA/600/R-96/129 |
Stock Number |
PB97-117741 |
Subjects |
Heat pump ;
Refrigerants ;
Heat--Transmission--Computer simulation
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Additional Subjects |
Refrigerants ;
Materials replacement ;
Air conditioning equipment ;
Heat pumps ;
Air pollution abatement ;
Ozone ;
Residential buildings ;
Hydrochlorofluorocarbons ;
Performance evaluation ;
Models ;
Comparison ;
Computerized simulation ;
Pollution prevention
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Internet Access |
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Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB97-117741 |
Some EPA libraries have a fiche copy filed under the call number shown. |
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07/26/2022 |
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Collation |
314 pages : illustrations ; 29 cm |
Abstract |
The report gives results of an experimental and theoretical investigation of the transient and steady state performance of a residential air-conditioning/heat pump (AC/HP) operating with different refrigerants. (NOTE: The project was motivated by environmental concerns related to the replacement of stratospheric ozone depleting refrigerants as required by international agreement and U.S. law. Hydrochlorofluorocarbon (HCFC)-22, and a medium pressure refrigerant, is scheduled to be phased out of production and must be replaced. Significant empirical data are available on HCFC-22, but relatively little data exist on the transient performance of any of the zeotropic mixtures being considerd as HCFC-22 replacements). The experimental work, conducted by testing an AC/HP in environmental chambers, documented refrigerant performance for steady state, cyclic, and seasonal performance, evaluated various equipment modifications, and measured changes in the concentrations of refrigerant mixtures as a function of time. A computer model was developed, capable of modeling the transient and steady state performance of an AC/HP. This model is the first capable of representing the significant transient and steady state physics of an AC/HP operating with pure and mixed refrigerants while utilizing minimal empirical data. |
Notes |
EPA/600/R-96/129. Includes bibliographical references. Microfiche. |