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OLS Field Name OLS Field Data
Main Title Evaluation of Alternatives for HFC-134A Refrigerant in Motor Vehicle Air Conditioning.
Author Jetter, J. J. ; Smith, N. D. ; Ratanaphruks, K. ; Ng, A. S. ; Tufts, M. W. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. National Risk Management Research Lab. ;Acurex Environmental Corp., Research Triangle Park, NC.
Publisher 1997
Year Published 1997
Stock Number PB97-192371
Additional Subjects Air conditioning ; Refrigerants ; Environmental chemical substitudes ; Motor vehicles ; Compatibility ; Performance evaluation ; Alternatives ; Hydrofluorocarbons ; Azeotropes ; Thermophysical properties ; Thermodynamic properties ; Vapor compression refrigeration cycle ; Coefficient of performance ; Hydrofluoroethers ; HFC-134a ; HFC-227ca ; HFC-227ea ; HFC-245cb ; HFE-143a ; Refrigeration capacity
Holdings
Library Call Number Additional Info Location Last
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NTIS  PB97-192371 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/22/1997
Collation 12p
Abstract
HFC (hydrofluorocarbon)-134a is currently used as the refrigerant in motor vehicle air conditioners. The EPA's (Environmental Protection Agency's) NRMRL (National Risk Management Research Laboratory) has evaluated lower global warming alternatives for HFC-134a in motor vehicle air conditioning. Alternative technologies were evaluated. Four pure chemicals and one azeotropic mixture were identified and evaluated as alternative refrigerants for conventional systems, but were found to be unsuitable. The four pure chemicals were HFC-227ca, HFC-227ea, HFC-245cb, and HFE (hydrofluoroether)-143a. The azeotropic mixture was 51.7 weight percent HFC-134 and 48.3 weight percent HFC-245cb. The evaluation process and results are described in this paper.