Geothermal energy

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  • Geothermal energy

    1. 1. Geothermal Energy<br />
    2. 2. What is it?<br />Two Greek words in it<br />geo means earth and thermal means heat<br />Basically, it is using water heated within the earth and using it for energy.<br />
    3. 3. How it works<br />These are the steps to making geothermal energy:<br />Heat pumps in the ground move water continuously through a closed loop of a plastic pipe <br />The heat pump then moves the heat from an area of low temperature to an area of high temperature<br />This concept is similar to an air conditioner, (cold air comes in, warm air goes out)<br />
    4. 4. Geothermal Power plants Designs<br />There are three designs of geothermal power plants:<br />Dry Steam: steam is goes into a turbine and then a condenser where it condenses to water<br />Flash Steam: in order for the water to turn to steam, the water is depressurized, then it is used to power a generator<br />Dry Steam<br />Flash Steam<br />
    5. 5. Geothermal Power plants Designs (continued)<br />Binary System: the hot water is passed through a heat exchanger where the heat from the water is used to heat another liquid such as isobutane. Then the isobutane is heated a temperature where it can be easily transformed into steam.<br />Binary System<br />
    6. 6. Types of Loops<br />Vertical Loop: This example is used when there is not a lot of land available. A drill then drills a 150-200 foot hole. A pipe is then inserted and the hole is then filled with a sealer.<br />Horizontal Loop: This loop is used when there is a lot of land. Excavation material is used to dig 6-8 feet deep trenches that are 100 to 300 feet long<br />
    7. 7. Types of Loops (Continued)<br />Pond Loop: This is most common when there is a ½ acre wide and 8-10 foot deep body of water nearby. The pipe coils are most commonly 300 to 500 feet in length and are placed at the bottom of the water.<br />Open Loop: This like the pond is used when there is a body of water around but in the open loop, there must be enough water to provide 4 to 8 gallons of water a minute. There must also be a discharge drain <br />
    8. 8. Sources<br />Works Cited <br />Binary cycle. N.d.Union of Concerned Scientists. Union of Concerned Scientists, n.d. Web. 20 May 2011. <http://www.ucsusa.org/​clean_energy/​technology_and_impacts/​ energy_technologies/​how-geothermal-energy-works.html>.<br />Dry Steam. N.d.Union of Concerned Scientists. Union of Concerned Scientists, n.d. Web. 20 May 2011. <http://www.ucsusa.org/​clean_energy/​technology_and_impacts/​ energy_technologies/​how-geothermal-energy-works.html>.<br />Flash Steam. N.d.Union of Concerned Scientists. Union of Concerned Scientists, n.d. Web. 20 May 2011. <http://www.ucsusa.org/​clean_energy/​technology_and_impacts/​ energy_technologies/​how-geothermal-energy-works.html>.<br />Geothermal Energy. N.d.BBC. British Broadcasting Company, n.d. Web. 17 May 2011. <http://news.bbc.co.uk/​2/​hi/​uk_news/​england/​cornwall/​ 3937771.stm>.<br />Geothermal Energy. N.d.DebatePedia. N.p., n.d. Web. 17 May 2011. <http://debatepedia.idebate.org/​en/​index.php/​Debate:_Geothermal_energy>.<br />Geothermal Energy. N.d.Going Eco Green.  GoingEcoGreen, n.d. Web. 17 May 2011. <http://www.goingecogreen.com/​go-green-videos/​geothermal-energy/>.<br />Renew Mechanical Inc. “Geothermal Energy.” Renew Mechanical Inc.N.p., 2010. Web. 24 May 2011. <http://www.renewmechanical.com/​geo_energy.htm>.<br />Union of Concerned Scientists. “How Geothermal Energy Works .” Union of Concerned Scientists . Union of Concerned Scientists, 16 Dec. 2009. Web. 20 May 2011. <http://www.ucsusa.org/​clean_energy/​technology_and_impacts/​ energy_technologies/​how-geothermal-energy-works.html>.<br />U.S. Energy Information Administration. “Renewable Geothermal.” Energy Kids. U.S. Energy Information Administration, n.d. Web. 17 May 2011. <http://www.eia.doe.gov/​kids/​ energy.cfm?page=geothermal_home-basics>.<br />

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