||Calorimeter Performance Tests of HFC-245ca and HFC-245fa as CFC-11 Replacements.
Kazachki, G. S. ;
Gage, C. L. ;
Bayoglu, E. ;
Hendriks, R. V. ;
||Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Performance tests ;
Environmental chemical substances ;
Thermodynamic cycles ;
Thermodynamic properties ;
Vapor compression refrigeration cycle ;
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The paper gives results of compressor calorimeter tests with hydrofluorocarbon(HFC)-245ca and HFC-245fa as alternatives for the refrigerant chlorofluorocarbon (CFC)-11. Tests were performed in a semi-hermetic compressor at evaporating temperatures from 1 to 13 C and condensing temperatures from 40 to 60 C. In these ranges, the capacities and efficiencies of HFC-245ca were confirmed to be lower than of CFC-11, while both capacities and efficiencies of HFC-245fa were significantly higher. The higher-than-expected efficiencies and capacities for HFC-245fa were a result of the higher compressor efficiencies.