| 摘要 |
PURPOSE:To obtain a working fluid, containing specific amounts of pentafluoroethane, chlorodifluoromethane 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 <=95wt.%, preferably <=90wt.% pentafluoroethane (R125), <=95wt.%, preferably <=90wt.% chlorodifluoromethane (R22) and 5-60wt.%, preferably 10-50wt.% dichlorofluoroethane (R141b). |
