The temperature of the Earth’s core is estimated to exceed 5000 ° C (http://www.cres.gr/kape/energeia_politis/energeia_politis_geothermal.htm). This heat in the heels of the Earth is called geothermal energy and due to the enormous quantities for the human scale, it can be considered a practically inexhaustible form of energy.
The temperature rises deeper than the Earth's surface toward the center. Near the surface of the earth the average value is about 30 ° C / k m. In some areas due to various geological phenomena (eg volcanoes, hot water movement from deep depths through fissures), the temperature is significantly higher and so at relatively shallow depths we find aquifers with water or high temperature steam. These areas are so-called geothermal fields of high enthalpy, where the exploitation of geothermal energy for electricity generation becomes advantageous.
The temperature rises deeper than the Earth's surface toward the center. Near the surface of the earth the average value is about 30 ° C / k m. In some areas due to various geological phenomena (eg volcanoes, hot water movement from deep depths through fissures), the temperature is significantly higher and so at relatively shallow depths we find aquifers with water or high temperature steam. These areas are so-called geothermal fields of high enthalpy, where the exploitation of geothermal energy for electricity generation becomes advantageous.
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