Title: Geothermal Energy
Course: Critical Infrastructure: An Overview > Section: Course Content

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Geothermal energy is the heat energy that comes from the Earth [3]. Hot springs and geysers are naturally occurring sources of geothermal energy. Enhanced geothermal systems (also called EGS) are systems where water is forcefully injected into wells to be heated and then is pumped back out. A geothermal heat pump system can provide central heating and air by using the Earth as a source of heat or as a way to cool. Underground temperatures remain fairly constant and are generally cooler than the outside temperature in the summer and warmer than the outside temperature during winter [4].