| 摘要 |
PURPOSE:To provide a novel operating medium mixture containing trichloromonofluoromethane and tetrafluoroethane as essential components, having excellent heating and cooling efficiency, and applicable to a heat-pump, etc. CONSTITUTION:The objective operating medium mixture can be prepared by mixing (A) trichloromonofluoromethane with (B) a tetrafluoroethane at a molar ratio of (1.5-100):1. the component B is preferably 1,1,2,2-tetrafluoroethane and/or 1,1,1,2-tetrafluoroethane. |
