Apparatus to use a refrigerator in mobile computing device

An apparatus comprising:

• a refrigerator to be placed in a mobile computing device, the refrigerator is selected from a group of refrigerators comprising of a thermoacoustic based refrigerator and a Stirling based refrigerator, the refrigerator including a cold reservoir and a hot reservoir, the cold reservoir to absorb heat generated by a heat generating unit of the mobile computing device;
• a working fluid loop with a fluid of the working fluid loop being in thermal contact with the heat generating unit, the cold reservoir of the refrigerator to absorb heat from the fluid of the working fluid loop;
• a heat exchanger to dissipate heat from the fluid of the loop;
• a fan to dissipate heat from the heat exchanger;
• and
• a pump to circulate the fluid of the working fluid loop between the heat generating unit and the cold reservoir, wherein the pump is powered off in response to the mobile computing device receiving power from a battery power source.