摘要 |
PURPOSE:To obtain a working fluid, containing specific amounts of chlorodifluoromethane, chlorotetrafluoroethane and dichlorofluoroethane, hardly affecting the stratospheric ozonosphere and used for refrigerators, heat pumps, etc. CONSTITUTION:The objective working fluid containing at least three kinds of fluorocarbons of 30-95wt.%, preferably 35-90wt.% chlorodifluoromethane (R22), <=70wt.%, preferably <=65wt.% chlorotetrafluoroethane (R124) and <=45wt.% dichlorofluoroethane (R141b). |