REFRIGERANT CIRCULATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To suppress temperature rise of an electric compressor and protect the electric compressor.SOLUTION: A refrigerant circulation system includes: an indoor air conditioning evaporator unit 2 which cools the interior of a vehicle cabin; an on-vehicle battery cooling evaporator unit 3 including an on-vehicle battery cooling evaporator 32 which cools an on-vehicle battery mounted on a vehicle; an electric compressor 5 which compresses a refrigerant and supplies the refrigerant to the indoor air conditioning evaporator unit 2 and the on-vehicle battery cooling evaporator unit 3; a temperature sensor 41 which detects an internal temperature of the electric compressor 5; a pressure sensor 42 which detects a pressure of the refrigerant compressed by the electric compressor 5; and an air conditioner control unit 40 which regulates the operation of the on-vehicle battery cooling evaporator 32 for reducing a load of the electric compressor 5 on the basis of the internal temperature of the electric compressor 5 and the pressure of the refrigerant.