HEAT-PUMP-TYPE VEHICLE AIR-CONDITIONING SYSTEMA refrigerant/heat medium heat exchanger that heats a heat medium which circulates in a heater core of an HVAC unit is provided in a discharge pipe of a cooling refrigerant circuit, a heating bypass c…DRIVE·Nov 9·2 min readFollowB60H1/3204MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.