CUTTING COAL PLANT EMISSIONS WITH GEOTHERMAL
Geothermal Assisted Power Generation for Thermal Power Plants
Nigel Bean, February 3, 2015 (Penn Energy)
“The recent push to reduce carbon emissions from the electricity sector encompasses common, immediately available approaches such as increasing power plant efficiency and increasing the deployment of renewables. The opportunity now exists to accomplish these goals simultaneously through the use of geothermal energy to increase the power output, and decrease the carbon intensity, of thermal power plants. This technology is referred to here as geothermal assisted power generation (GAPG). Basically, GAPG employs hot geothermal fluid to heat the boiler feedwater at a thermal power plant. The steam that would otherwise be taken from the turbines to heat the feedwater is allowed to run through the turbines, thereby generating extra power and increasing plant efficiency. Here we use efficiency to mean “fossil fuel efficiency”, as more power is generated per unit heat (MMBtu) of fossil fuel, because of the addition of the geothermal heat…Not only would this technology increase the efficiency of existing thermal power plants, most of which are coal fired, it would also assist the development of the immature technology of utilizing unconventional geothermal resources…” click here for more
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