GAS COOLER FOR A MOTOR VEHICLE AIR-CONDITIONING SYSTEM

摘要

The invention relates to a gas cooler for a motor vehicle air-conditioning system through which a supercritical refrigerant flows, said vehicle comprising an engine that is cooled by a coolant flowing through a cooling loop. The gas cooler (14) comprises a first exchanger (E1) which operates at a high temperature and a second exchanger (E2) which operates at a low temperature, both of which are flowed through by the vehicle engine coolant, thereby forming two cooling stages such that the gaseous refrigerant is successively cooled by the first exchanger and the second exchanger. In addition, the gas cooler (14) can also optionally comprise a third exchanger (E3) forming a third cooling stage. The invention is suitable for motor vehicle air-conditioning systems.