Hydrofluorocarbon refrigerant compositions for heat pump water heaters
AssigneeHoneywell International Inc.
InventorsSamuel F. Yana Motta, Lawrence Chin, Zhili Lu, Mark W. Spatz, Maggie Cao
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Abstract
Hydrofluorocarbon refrigerant compositions enable the use of existing compressor technologies in heat pump water heaters in a reliable (low discharge temperatures and pressures) and efficient (high capacity and efficiency) manner. The refrigerant comprises blends of pentafluoroethane (HFC-125), difluoromethane (HFC-32), tetrafluoroethane (HFC-134a) and tetrafluoropropene (HFO-1234ze).
Claims14
A refrigerant composition consisting of approximately 8-20 wt % pentafluoroethane (HFC-125), approximately 8-20 wt % difluoromethane (HFC-32), approximately 60-72 wt % tetrafluoroethane (HFC-134a) and approximately 1-16 wt % tetrafluoropropene (HFO-1234ze).
A refrigerant composition comprising approximately 8-20 wt % pentafluoroethane (HFC-125), approximately 8-20 wt % difluoromethane (HFC-32), approximately 60-72 wt % tetrafluoroethane (HFC-134a) and approximately 1-16 wt % tetrafluoropropene (HFO-1234ze).
A refrigerant composition consisting essentially of approximately 8-20 wt % pentafluoroethane (HFC-125), approximately 8-20 wt % difluoromethane (HFC-32), approximately 60-72 wt % tetrafluoroethane (HFC-134a) and approximately 1-16 wt % tetrafluoropropene (HFO-1234ze).
Dependencies are inferred from the claim text.