| 摘要 |
PURPOSE:To obtain a working fluid, containing specific amounts of chlorodifluoromethane, chlorodifluoroethane and dichlorotrifluoroethane, 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 45-90wt.%, preferably 55-85wt.% chlorodifluoromethane (R22), <=55wt.%, preferably <=50wt.% chlorodifluoroethane (R142b) and <=50wt.% dichlorotrifluoroethane (R123). |
