What is the source of energy for a geothermal power plant?
Thursday, July 15th, 2010 at
5:09 pm
Please help me. This is for a study guide so I need help. It seems that I can’t find it.
Is it possible that the answer is magma? Earth Man or anyone else please reply O:
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Very hot, high-pressure geothermal fluids. Basically deep groundwater that is heated by the presence of a nearby, stationary magma plume, then rises under pressures to the surface.
The plants use one of three mechanisms to generate electricity, but all very similar.
(1) Using the steam alone to drive the blades of an electric turbine. Very inefficient.
(2) Using the geothermal fluids as direct-drive for the turbine blades. Very powerful, but the fluids are rough on the blades.
(3) Using a heat-exchanger, often ammonia, to take the heat from the geothermal fluids, then use the newly heated and pressurized fluid to drive the turbine blades. Very powerful and efficient, and also good because it’s much lower maintenance.
Eventually, the fluids will always get injected back into the ground, where they’re eventually reheated and returned to the surface to drive the turbines again.
as said the magna… magna heated by gravitational pulls from the moon and the sun..
heat from the earth