mixtures pseudo - azeotropic of difluoromethane and pentafluorodimethylether, and their applications, such as fluids refrigerants

摘要

To replace the chlorodifluoromethane in the refrigeration systems, or air conditioning, the invention proposes to use as a refrigerant fluid, a mixture comprising difluoromethane, pentafluorodiméthyléther and at least one fluorinated compound chosen from the group constituted by the 1,1,1,2 (or 1,1,2,2) tetrafluoroethane, le1,1,1 - trifluoroethane, le1,1 - difluoroethane, the fluoroethane, the 1,1,1,2,3,3,3 (or 1,1,1,2,2,3,3) - heptafluoro - propane and pentafluoropropane 1,1,1,2,2 -