Raser Technologies, a publicly traded company based in Provo, Utah, has developed a new method of harnessing lower-heat geothermal resources, inexpensively and rapidly. The ribbon-cutting on Nov. 6, 2008 celebrated the first plant they have completed, with eight other plants in various phases of construction.
Raser has contracted with United Technologies Corporation (UTC), which has been in the industrial air conditioning business for decades. With just a slight modification of UTC's air conditioning unit, essentially running it in reverse, rather than using electricity to produce cool air, Raser applies the earth's heat to generate electricity.
Hot water from deep underground reservoirs is pumped up through a well and ran through a heat exchanger, which contains a proprietary fluid that boils at much lower temperature than water does. That turns a turbine, which runs a generator to produce electricity. The cooled water is then pumped back underground, completing a closed loop. The vaporized heat exchanger fluid is cooled back down in the large cooling towers that can be seen in the background, behind the modules. Above-ground water is used in those evaporative cooling towers to assist in cooling the fluid.
Each PureCycle module by UTC produces 280 kilowatts continuously, with virtually no fluctuation, all day and all night, year after year. Like a nuclear power plant, this approach can provide base load electricity for the grid, except with no emissions; no pollution.
This 11 Megawatt net output power plant was built in just six months, from groundbreaking to the ribbon cutting ceremony on Nov. 6, 2008 -- an unheard of speed in the geothermal industry that usually would expect take five to seven years to produce a plant with this output. These innovations by Raser will allow for unleashing vast geothermal resources, competitively; potentially providing up to one third of all electrical needs in the U.S. and elsewhere in the world, via a clean, renewable energy source.
See our story about the ribbon-cutting at: http://pesn.com/2008/11/07/9501499_Raser_ribbon-cutting_new_geothermal_era/
See our feature page at: http://peswiki.com/index.php/Directory:Raser_Technologies_-_Geothermal_and_Waste_Heat_Harvesting
The company's website is: http://www.rasertech.com/geothermal_projects.html
Video Tags:geothermal, Raser, Brent M. Cook, Orrin Hatch, Gary Herbert, Utah, PureCycle, Sterling Allan, free energy
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