METHOD OF CHARGING MIXED COOLING MEDIUM

摘要

To use a non-azeotropic mixture consisting of HFC32 (23 wt.%), HFC125 (25 wt.%) and HFC134a (52 wt.%) as a cooling medium, the mixture in a container on the supply side such as a bomb is made to have a composition of HFC31 (23.5 to 25.0 wt.%), HFC125 (23.5 to 25.0 wt.%) and HFC134a (50.0 to 53.0 wt.%), and extracted from thte liquid phase at a temperature not higher than 40 DEG C. The change of the composition due to the charging is within an allowable range of cooling performance.