Abstract: A cooling device for cooling a component comprising a heat sink, a housing having an inner chamber, wherein a volume-changing device is formed to withdraw a fluid into the chamber and to expel the fluid from the chamber, the withdrawal causing a first flow and the expulsion causing cortices which form a second flow. A preheating device is also provided and is configured to convey the first flow and the second flow, and to increase the temperature of the first fluid quantity entrained by the first flow during the withdrawal from an initial temperature to a first temperature, and to increase the second fluid quantity entrained by the second flow, from the first temperature to a second temperature.