COOLING SYSTEM AND METHOD FOR OPERATING A COOLING SYSTEM FOR AT LEAST ONE COMPONENT OF A FUEL CELL SYSTEM

A cooling system (30) for at least one component (12) of a fuel cell system (10) equipped with a heat exchanger (34) has a refrigeration unit (38) and a thermofluid circuit (32) which is connected on the one hand to a thermofluid inlet (35) and a thermofluid outlet (36) of the heat exchanger (34) of the respective component (12) of the fuel cell system (10) and on the other hand to a heat exchanger (39) of the refrigeration unit (38). The thermofluid is conveyed through the heat exchanger (34) of the respective component (12) of the fuel cell system (10) and through the heat exchanger (39) of the refrigeration unit (38) by means of a pump (40) in the thermofluid circuit (32), wherein a thermal loss power of the pump (40) is varied in order, when an elevated temperature level of the respective component (12) of the fuel cell system (10) is required, to increase the temperature of the thermofluid by increasing the thermal loss power of the pump (40), instead of using additional heat sources for this purpose.