| 摘要 |
PURPOSE: To obtain a working fluid having null ozone destruction coefficient and refrigerant characteristics equal to or higher than R22, capable of using an existing apparatus as it is, utilizing R22. CONSTITUTION: This working fluid contains 35-60wt.% of 1,1,1-trifluoroethane, 25-55wt.% of 1,1-difluoroethane and the rest of difluoroethane and the weight percents (wt.%) of 1,1,1-trifluoroethane and 1,1-difluoroethane are in a range enclosed by a point A (35, 55), a point B (55, 45), a point C (60, 40), a point D (60, 30), a point E (55, 25), a point F (50, 25) and a point G (50, 30) shown on the solid lines of the figure. The working fluid contains at least the three components. |
