PURPOSE: To provide a refrigerant which consists of bromotrifluoromethane and chlorotetrafluoroethane, shows an improved performance coefficient higher than those of flon 12 or 22 and is suitable for use in a heat-pump type room heater. CONSTITUTION: The refrigerant is prepared by mixing, preferably, 85W10wt% bromotrifluoromethane with 15W90wt% chlorotetrafluoroethane. It is a non-azeotropic composition and its temperature gradient can be approximated to that of a fluid to be cooled in an evaporator to have high refrigeration efficiency, i.e. a high performance coefficient. COPYRIGHT: (C)1984,JPO&Japio




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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    JP-S4997351-ASeptember 13, 1974

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    JP-S59117579-AJuly 06, 1984Matsushita Electric Ind Co LtdRefrigerant composition
    JP-S59117580-AJuly 06, 1984Matsushita Electric Ind Co LtdRefrigerant composition
    JP-S6312512-B2March 19, 1988Matsushita Electric Ind Co Ltd