DIFLUOROMETHANE AND PENTAFLUORODIMETHYLETHER PSEUDO-AZEOTROPIC MIXTURES AND THEIR USE AS REFRIGERANT FLUIDS

摘要

to replace the chlorodifluoromethane in refrigeration systems, air conditioning, the invention proposes to use a mixture of difluoromethane refrigerant.the pentafluorodimu00e9thylu00e9ther fluorinated compound, and at least one selected from the group formed by the 1,1,1,2-tetrafluoroethane in the 1,1,2,2tu00e9trafluorou00e9thane, 1,1,1-trifluoro -, 1)1difluorou00e9thane, ethyl, 1,1,1,2,3,3,3 to propane, 1,1,1,2,2,3,3 heptafluoropropane and 1,1,1,2,2pentafluoropropane.