Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
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.
Other Authors
Author Title of a Work
Hwang, Y.
Radermacher, R.
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.
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
Library Call Number Additional Info Location Last
NTIS  PB97-117741 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 314 pages : illustrations ; 29 cm
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.
EPA/600/R-96/129. Includes bibliographical references. Microfiche.