| 摘要 |
PURPOSE:To provide a refrigerant which shows an improved performance coefficient higher than those of flon 12 or 22 and is suitable for use in a heat-pump type room heater, prepared by blending dichlorodifluoromethane with bromotrifluoromethane. CONSTITUTION:The refrigerant is prepared by mixing, preferably, 90-30wt% dichlorodifluoromethane with 10-70wt% bromotrifluoroethane. It is a non-azeotropic composition and its temperature gradient can be approximated to that of a fluid to be cooled in an evaporator to have high refrigeration efficiency i.e. a high performance coefficient. |
