a cooling system for a vehicle has a refrigeration system with an ejector pump for ejecting fluid heated by a first heating element . the fluid is ejected at high speed to circulate the refrigerant and induce an entrainment effect . a radiator cools the refrigerant ejected from said ejector pump and an evaporator evaporates the refrigerant to generate refrigerating capacity . a first refrigerant circuit has a heat recovery circuit for exchanging heat between the first heating element and the refrigerant , ejecting the refrigerant and taking heat from the first heating element into the radiator via the heat recovery circuit with the use of the ejector pump , making the radiator dissipate the heat of the refrigerant , separating the refrigerant into gas - phase refrigerant and liquid - phase refrigerant by a gas - liquid separator , and making the gas - phase refrigerant return to the heat recovery circuit . a second refrigerant circuit decompresses the liquid - phase refrigerant .