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Q.

What is


what is Geothermal energy?? Shall we produce current from the same?

Tags: health, electronics, science
Asked by vijayasundarr vijayasundarr, 21 Mar '10 03:51 pm
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Answers (3)

 
1.

Wiki says -is power extracted from heat stored in the earth. This geothermal energy originates from the original formation of the planet, from radioactive decay of minerals, and from solar energy absorbed at the surface. It has been used for bathing since Paleolithic times and for space heating since ancient Roman times, but is now better known for generating electricity. Worldwide, geothermal plants have the capacity to generate about 10 gigawatts of electricity as of 2007, and in practice supply 0.3% of global electricity demand. An additional 28 gigawatts of direct geothermal heating capacity is installed for district heating, space heating, spas, industrial processes, desalination and agricultural applications. - though just and addition, india doesnot have good hotspots for the same except in himalayas
Answered by conviction, 21 Mar '10 03:55 pm

 
  
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2.

Geothermal Energy has been around for as long as the Earth has existed. "Geo" means earth, and "thermal" means heat. So, geothermal means earth-heat. Have you ever cut a boiled egg in half? The egg is similar to how the earth looks like inside. The yellow yolk of the egg is like the core of the earth. The white part is the mantle of the earth. And the thin shell of the egg, that would have surrounded the boiled egg if you didn't peel it off, is like the earth's crust.

Below the crust of the earth, the top layer of the mantle is a hot liquid rock called magma. The crust of the earth floats on this liquid magma mantle. When magma breaks through the surface of the earth in a volcano, it is called lava. For every 100 meters you go below ground, the temperature of the rock increases about 3 degrees Celsius. Or for every 328 feet below ground, the temperature increases 5.4 degrees Fahrenheit. So, if you went about 10,000 feet below ground, the temperature of the rock would be hot enough t ...more
Answered by Dinesh Manaktala, 21 Mar '10 03:55 pm

 
  
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3.

In some part of earth magma comes near the surface this can used for producing super heated steam these steam can be directed toward turbine.And when the turbine revolves current can really be produced.
Answered by Utsav, 21 Mar '10 03:55 pm

 
  
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