| 摘要 |
PURPOSE:To obtain a working fluid, containing fluorocarbons such as pentafluoroethane in a specific proportion, hardly destroying the ozonosphere as a substitutive fluid for R22, usable in the existing equipment, excellent in heat exchange efficiency and useful as heat pump devices such as air conditioners. CONSTITUTION:The objective working fluid containing at least three fluorocarbons of (A) 55-85wt.% pentafluoroethane, (B) 0-45wt.% tetrafluoroethane and (C) 0-35wt.%, preferably 0-30wt.% chlorotetrafluoroethane. |
