REFRIGERANT MIXTURES COMPRISING TETRAFLUOROPROPENE, DIFLUOROMETHANE, PENTAFLUOROETHANE, AND TETRAFLUOROETHANE, AND USES THEREOF

摘要

A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture may include from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125, (d) from 25.5 weight percent to 30 weight percent HFC-134a, and optionally (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g., lubricants), in processes to produce cooling, in methods for replacing refrigerants R-404A, R-507, R-407A, R-407C, R-407F and/or R-22, and in refrigeration apparatuses.

主权项

1. A composition comprising:
from 23.3 weight % to 24.5 weight % difluoromethane; from 24.5 weight % to 25.7 weight % pentafluoroethane; from 25.5 weight % to 26.7 weight % 1,1,1,2-tetrafluoroethane; and from 24.3 weight % to 25.5 weight % 2,3,3,3-tetrafluoropropene.