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PERFORMANCE EVALUATION OF A VARIABLE SPEED, MIXED REFRIGERANT HEAT PUMP
Citation:
Rothfleisch, P. AND D. Didion. PERFORMANCE EVALUATION OF A VARIABLE SPEED, MIXED REFRIGERANT HEAT PUMP. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-92/053.
Description:
The report gives results of an evaluation of the performance of an innovative heat pump, equipped with a distillation column to shift the composition of a zeotropic refrigerant mixture. t gives results of U.S. Department of Energy (DOE) rating tests and seasonal energy calculations with the main cycle refrigerant compositions. o composition shifting of the circulating refrigerant mixture was observed. o demonstrate the potential value of composition shifting, an ideal vapor compression cycle computer program was used to predict what the system performance would have been had the composition shifted. easonal energy usage calculations based on the computer predictions demonstrated that the effect of composition shifting on the heating seasonal performance factor (HSPF) was very small, increasing slightly with climate zone. owever, the savings in auxiliary heat were found to be substantial. n the cooling mode, computer predictions showed pure Refrigerant-22 (R-22) to have a seasonal energy efficiency ratio (SEER) approximately 2% higher than a mixture of 20% R-13B1 and 80% R-22 by weight.