TEMPERATURE CONTROL SYSTEM

A temperature control system is mounted on a vehicle. The temperature control system includes a PU cooling circuit configured to allow a first refrigerant to flow therethrough and adjust a temperature of a power unit, a refrigeration cycle circuit, which is used for air conditioning, configured to allow a second refrigerant to flow therethrough, a first heat exchanger configured to exchange heat between the first refrigerant in the PU cooling circuit and the second refrigerant in the refrigeration cycle circuit, a gas-liquid separation device configured to separate the first refrigerant into gas and liquid, and a refrigerant cooling circuit configured to allow the first refrigerant to flow therethrough and communicate with the PU cooling circuit via the gas-liquid separation device.