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Priority to PH22016000077UpriorityCriticalpatent/PH22016000077Y1/en
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Publication of PH22016000077Y1publicationCriticalpatent/PH22016000077Y1/en
Energy conservation of freezing and air-conditioning apparatuses can be practiced by replacing the chlorofluorocarbon alternatives (HCFC and HFC) with a hydrocarbon refrigerant as a natural refrigerant so as to allow fluorocarbon-free by the hydrocarbon refrigerant as the natural refrigerant reduce use of chlorofluorocarbon alternatives. A hydrocarbon mixed refrigerant according to the utility model contains propane and having a saturated vapor pressure at 7 celsius of 0.3 to 1 MPa and a saturated vapor pressure at 35 celsius of 0.6 to 2.2 MPa and may further contain n-butane, isobutane and ethane. The hydrocarbon mixed refrigerant preferably has a boiling point of -20 celsius or less.
Hydrocarbon mixed refrigerant, freezing/refrigerating or cooling/heating air-conditioning system, freezing/refrigerating or cooling/heating air-conditioning method, and method for manufacturing freezing/refrigerating or cooling/heating air-conditioning system