| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerant circuit capable of providing desirable refrigerating capacity while not only preventing ozone layer depletion but also keeping workplace environment favorable, and excellent in oil return as well. SOLUTION: This refrigerant circuit is such one as to contain a refrigerant comprising 75-99 wt.% of chlorodifluoromethane plus 1-chloro-1,1-difluoroethane, and 1-25 wt.% of propane octafluoride. |
