Compositions of hydrofluoroolefins and hydrofluorocarbons and systems for using the compositions

Abstract

Environmentally friendly refrigerant blends utilizing refrigerants including at least one fluoroolefin compound selected from E-1,2-difluoroethylene (HFO-1132(E)), E-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)), 1,1-difluoropropene (HFO-1252zc) and combinations thereof, and at least one hydrofluorocarbon compound selected from 1,1,2,2-tetrafluoroethane (HFC-134), difluoromethane (HFC-32) and combinations thereof, are provided. The blends have low GWP, low toxicity, and low flammability with low temperature glide for use in a hybrid, mild hybrid, plug-in hybrid, or full electric vehicles for thermal management (transferring heat from one part of the vehicle to the other) of the passenger compartment providing air conditioning (A / C) or heating to the passenger cabin.

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