Geothermal Energy Essay

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Geothermal energy is extracting steam from miles below the earth’s surface to generate energy. Geothermal reservoirs (pools of hot water below the earths surface) can be used to heat homes by piping it through the homes. After the water is pumped into the heat exchanger, it is pumped back down to the geothermal reservoirs to be heated again. The hot water and steam can be used to create electricity through geothermal power plants. Geothermal energy doesn’t produce pollutants and it cuts down on costs because it doesn’t need to transport the energy to the plant. (Watson, Stephanie) The term Geothermal comes from the Greek word geo (earth) and therme (heat). Geothermal naturally comes to the surface as volcanoes, hot springs, and geysers. Geothermal resources are commonly found near the plate boundaries. There are three types of geothermal power plants: dry steam plants, flash seam plants, and binary cycle plants. Dry steam plants use hot steam from geothermal reservoirs to spin a turbine to generate electricity. Flash steam plants use water that’s 300 to 700 degrees Fahrenheit that’s piped to a turbine. Some turns to steam and turns the turbine, but the rest doesn’t and gets pumped back into the earth. Finally binary cycle plants uses hot water from geothermal reservoirs that is pumped through a heat exchanger and becomes a liquid that has a low boiling point then water. Then the fluid turns to steam, which turns a turbine (Geothermal). Geothermal energy has a few benefits to society. It doesn’t pollute the air, its available ever second of the day and every day of the year, and its right below our feet and we don’t have to dependent on foreign countries (Geothermal FAQ’s). Geothermal energy systems are fifty to seventy percent more energy efficient than traditional heating systems. Geothermal systems also offer a twenty to forty percent more efficient cooling

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