Non-azeotropic mixtures of 1,1,1,2-tetrafluoroethane, 1,1,1-trifluoroethane and pentafluoroethane, and application thereof as refrigerants

摘要

A non-azeotropic mixt. comprising (by wt.) 55-65 % 1,1,1,2-tetrafluoroethane (HFC-134a), 1-27 % 1,1,1-trifluoroethane (HFC-143a) and 10-44 % pentafluoroethane (HFC-125). Also claimed are their use as refrigerant fluids, partic. as replacements for R-500, a transport refrigerant.