METHOD AND SYSTEM FOR SUPPLYING REFRIGERANT TO REFRIGERANT HEATER OF STEAM INJECTION TYPE COOLING AND HEAT PUMP SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method and system for supplying fluid to the refrigerant heater of a steam injection type cooling and heat pump achieving sufficiently high latent heat of evaporation to reduce the amount of refrigerant needed to be circulated for driving an enector, while using ammonium as natural refrigerant with good heat transfer performance, and interposing a short stop period during the period of system operation for the purpose of supplying cold or heat, during which period the supply of the refrigerant fluid from a receiver to the refrigerant heater is achieved by the weight of the fluid itself.;SOLUTION: The system comprises the ejector 10; an evaporator 11; a condenser 12; a receiver 13; the refrigerant heater 14 disposed beneath the receiver 13 with a gap therebetween; a drive flow passage 16 interconnecting the above members; a superheated steam flow passage 20; a liquid receiving passage 17; a suction flow passage 21 leading to the ejector 10 from the condenser 12 via the evaporator 11; and a refrigerant supply passage 15 leading to the refrigerant heater 14.;COPYRIGHT: (C)2003,JPO