Geothermal energy is the heat from the Earth. It’s clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth’s surface.
Almost everywhere, from the shallow ground ie upper 10 feet of the Earth’s surface to hindreds of feet below the surface maintains a nearly constant temperature between 50° and 60°F (10° and 16°C). Geothermal heat pumps can tap into this resource to heat and cool buildings. A geothermal heat pump system consists of a heat pump, an heat delivery system (ductworks for air delivery or piping for hot water delivery), a heat exchanger-and a system of pipes buried in the shallow ground pr into deep wells near the building. In the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor heat delivery system. In the summer, the process is reversed, and the heat pump moves heat from the interior to the heat exchanger and then ultimately back to the ground to complete the cycle.