Geothermal heat pumps may be used to exploit the temperature difference between the earth's surface and underground in the earth's mantle.

Question

Quizplus · Accepted Answer

Geothermal heat pumps use the relatively constant temperature of the earth's upper crust to provide heating and cooling for buildings. This temperature difference can be exploited using a series of underground pipes and a heat exchanger to extract heat from the ground in winter and dissipate excess heat in summer.

Geothermal Heat Pumps May Be Used to Exploit the Temperature