Diferencia entre revisiones de «Energía geotérmica»

Not all areas of the world have a usable geothermal resource, though many do. Also, some geothermal areas do not have a high enough temperature to produce steam. In those areas, geothermal power can be generated using a process called [[binary cycle technology]], though the efficiency is lower. Other areas do not have the water to produce steam, which is necessary for current plant designs. Geothermal areas without steam are called hot dry rock areas and methods for exploiting them are being researched. Also, instead of producing electricity, lower temperature areas can provide space and process heating. As of 1998, the United States has 18 district heating systems, 28 fish farms, 12 industrial plants, 218 spas and 38 greenhouses that use geothermal heat.

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