摘要 |
PURPOSE:To obtain a working fluid containing specific amounts of chlorodifluoromethane, chlorotetrafluoroethane and dichlorotrifluoroethane, hardly affecting the stractospheric ozonosphere and used for refrigerators, heat pumps, etc. CONSTITUTION:The objective working fluid containing at least three kinds of fluorocarbons of 30-90wt.%, preferably 35-85wt.% chlorodifluoromethane (R22), <=70wt.%, preferably <=65wt.% chlorotetrafluoroethane (R124) and <=55wt.%, preferably <=50wt.% dichlorotrifluoroethane (R123). |