NEAR AZEOTROPIC REFRIGERANT MIXTURES

摘要

PURPOSE: A near azeotropic refrigerant mixture is provided to prevent an ozone layer from being destroyed even when the refrigerant mixture is spilled or is discarded and to enable a user to stably use a refrigerating system using a pure refrigerant. CONSTITUTION: A near azeotropic refrigerant mixture comprises 85~98 kg of ethane-based 1,1,-difluoroethane(R-152a) and 0.1~0.5 kg of hexa methyl silicone oil. The refrigerant mixture has an oxygen depletion potential(ODP) of 0 and a global warming potential(GWP) of 117.5. The refrigerant mixture is capable of preventing composition change according to phase change and improving heat efficiency.