You are here:
INVESTIGATION OF HFC-236EA AND HFC-236FA AS CFC-114 REPLACEMENTS IN HIGH-TEMPERATURE HEAT PUMPS
Citation:
Kazachki, G., C. Gage, R. Hendriks, AND W. Rhodes. INVESTIGATION OF HFC-236EA AND HFC-236FA AS CFC-114 REPLACEMENTS IN HIGH-TEMPERATURE HEAT PUMPS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-95/016.
Description:
The paper discusses a thermodynamic analysis of HFC-236ea and HFC-236f as ozone-safe CFC-114 alternatives in a vapor-compression cycle at high-temperature heat-pump conditions. he cooling capacities and the coefficients of performance (COPs) are evaluated. omprehensive calorimeter tests on a semihermetic compressor were performed with CFC-114, HFC-236ea, and HFC-236fa over a wide range of temperature test conditions: evaporating temperatures from 0 to 35 C and condensing temperatures from 40 to 110 C. ore than 600 tests were run at 66 test conditions with the three refrigerants. arameters assessed as criteria for performance evaluation and for reliable performance were: cooling capacity; electric power input, current, and voltage; CCP; compressor volumetric and isentropic efficiencies; and discharge, winding, and oil temperatures. olyol ester oil was used as lubricant in the compressor. he oil charge was unchanged when switching refrigerants. ith all three refrigerants, the compressor ran 1800 hours without failure and without indication of excessive noise or vibration.