Sunday, May 17, 2009

Enhanced geothermal power systems

The advancement in technology has led to the development of enhanced geothermal power systems. These systems are also called hot dry rock geothermal energy systems or hot fractured rock systems. These systems use geothermal power products for power generation and use very high temperatures found in rocks below the earth’s surface.

These are also known as engineered geothermal power systems that extract green renewable energy in the form of heat from earth that consists of natural geothermal power systems with cracks or pores which are filled with hot water that is sufficient enough to generate power.

Water is pumped at a high pressure using a bore or injection well that is drilled into the hot rock to pump water to generate electricity. Water travels through the fractures or cracks in rocks and captures the heat from rocks till it is forced out of the second borehole. The hot water so obtained as geothermal power product is converted to electricity through either a turbine or a geothermal power plant.

Some enhanced geothermal power systems also use supercritical carbon dioxide as a working fluid because it results in better geothermal power output.

There are a few advantages of these systems. One of the main advantages is that they use a renewable energy source, geothermal energy for power generation. These systems being green renewable energy structures do not emit carbon compounds into the atmosphere and thus do not degrade the environment. These systems can be handled easily and are also easy and convenient to use.

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