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Geothermal Energy

Added on: March 21st, 2012 by Afsal Meerankutty No Comments

The word geothermal comes from the Greek words geo (earth) and therme ( heat). So, geothermal energy is heat from within the earth. We can use the steam and hot water produced inside the earth to heat buildings or generate electricity. Geothermal energy is a renewable energy source because the water is replenished by rainfall and the heat is continuously produced in the earth.

Historically , the first application of geothermal energy were for space heating , cooking and medical purposes . The earliest record of space heating dates back to 1300 in Iceland .In the early 1800s , geothermal energy was used on what was then a large scale by the conte Franceso de Laderel to recover boric acid . The first mechanical conversion was in 1897 when the steam of the field at Larderallo, Italy , was used to heat a boiler producing steam which drove a small steam engine . The first attempt to produce electricity also took place at Larderello in 1904 with an electricity generator that powered four light bulbs . This was followed in 1912 by a condensating turbine ; and by 1914, 8.5 MW of electricity was being produced . By 1944 larderello was producing 127MW. The Plant was destroyed near end of World war 2, but was fortunately rebuilt and expanded evevtually reached 360 MW in 1981.

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References for Geothermal Energy

http://en.wikipedia.org/wiki/Geothermal_energy
Topic Category - Electrical Topics, Mechanical Topics
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