| 摘要 |
PURPOSE:To normally operate a heat pump with new substitute refrigerant gas by allowing a specific allowance of the heat exchanging capacity of a condenser to remain in the condenser after heat radiating calorie of the refrigerant gas is eliminated when the gas is heat exchanged with cooling water in a water-cooled compressor. CONSTITUTION:A compressor 1, a water-cooled condenser 2A, an expansion valve 3 and an evaporator 4 are sequentially connected by a tube, refrigerant gas and oil are heat exchanged with cooling water from a water cooler 5 fed by a water pump 6 to be liquefied by the condenser 2A. In this case, the condenser 2A is so constructed as to be extended until the heat radiating calorie of the gas is all eliminated and that an allowance of 5% or more of the capacity of the entire condenser 2A is retained as 2a' thereafter at the time of a normal operation. The temperature of the gas output in contact with the water is lowered, for example, by 1 deg.C or more to completely combine the gas and the oil, thereby guaranteeing the normal operation of a cooler. |
