| 摘要 |
PURPOSE: A mixed refrigerant mixture composition is provided to ensure excellent volume refrigerating capacity, performance coefficient, steam pressure property, and the reliability of various parts and to minimize ozone depletion index and global warming property. CONSTITUTION: A mixed refrigerant mixture composition for replacing Freon-based refrigerants R502 and R404A comprises, based on the whole refrigerant composition, 65~80 weight% of propylene(CH3-CH-CH2) as a hydrocarbon-based coolant gas; 15~30 weight% of 2,3,3,3-tetrafluoropropene(CF3CF=CH2) as hydrocarbon-based coolant gas; and 5 weight% or less of pentafluoroethane(C2HF5) or difluoromethane(CH2F2) within 5 weight%.
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