The energy geothermal is obtained from volcanic activity or the movement of the earth ‘s plates. From these places it is possible to obtain hot water close to the surface and from there it is possible to generate electricity .
The production of electricity is carried out through a series of steps:
1) Extraction of steam or hot water that comes from a geometric reserve located one hundred meters below the earth’s surface;
2) Steam reaches the surface through a turbine connected to a generator, from which it converts steam into electricity; Geothermal Energy
3) After the steam has passed through the turbine, it cools down and turns into water, reusing the geothermal reserve so that the same cycle can be restarted again.
Geothermal energy is that which the Earth transmits through its inner layers to the outermost part of the Earth’s crust
As you go deeper into the Earth’s crust, the Earth’s temperature gradually increases and the manifestation of geothermal energy is produced naturally in the form of geysers, fumaroles, thermal waters or volcanoes.
The purpose of this energy source is to harness heat energy from the Earth’s interior. For this, geothermal reservoirs are explored, that is, the spaces in the earth’s crust are those that locate the permeable materials that retain water and transmit its heat. Geothermal Energy
Geothermal energy is considered a renewable energy, as is the case of hydroelectric, solar, wind or biomass energy.
Advantages
Geothermal projects preserve the environment and provide a local source of electricity and heat in some remote places. A geothermal plant employs a very small expanse of land so that it has less of an impact on the landscape. On the other hand, these plants do not emit gases, only water vapor.
Furthermore, no fuel is used to generate electricity. Even so, they do not affect surface manifestations (such as geysers or fumaroles), but help to identify geothermal resources . Finally, it should be noted that production wells prevent contamination in groundwater.
Examples
An example of this energy modality can be found in Iceland, a country where most homes are heated using geothermal energy. In Europe and the United States this energy is used for conditioning greenhouses during the winter. In some Asian countries, such as Japan, it is used as an alternative to nuclear power plants. Geothermal Energy
