Geothermal energy in China
China is actively working on issues of development of geothermal electricity by the way. Previously, next to a small Chinese town Guncha, which is located in the northwestern part of China in the thickness of the earth close to the surface discovered large reserves of hot water and hot rocks at depths of up to 230 meters. Previously in China, looking for places where it would be possible to dry to take heat of the Earth, but all attempts until the last day were fruitless. Qinghai province is the only place in mainland China where you can take heat from the hot rocks direct way. The place itself is quite suitable for large-scale development and use.
Dry heat generation of the earth is in the selection is not injected into the cavity in the earth is strata of the water, a selection of heat using special core, which deepened in the hot rocks at the depth of up to 10,000 meters deeper If there are such species, the heat from the depths below than 10 km already not appropriate. The rocks that are used to heat should have a temperature
below 150 degrees. Usually the temperature
is in the range between 150 hail and 650 degrees on the upper side.
The use of such energy-intensive layers allows you to generate electricity in an environmentally friendly way.
Earlier, such projects are implemented in areas where the surface of the hot springs or anywhere in the cavity of the Earth there is hot water. Water was pumped under pressure into one place, and superheated steam averted in the turbine hall in another place. So he worked earlier this thermal energy. The first thermal power plant appeared thanks to the American scientist back in the 70-ies of the last century.
The new technology is called ?hot dry rock?, not Chinese invented, although you will! The deeper you fall, the higher the temperature
of the reservoir. There is a certain law, every 100 meters down add 3 C for temperature
. The first thermal power plant was introduced in America. In an underground cavern at a depth of 5 km drilled two boreholes spaced from one another. In one fetch water, but from a different take superheated steam. As in China will be implemented all the time will show.
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