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Geothermal Energy

Geothermal Energy. Dong Kim Chemical Engineering Energy Technology and Policy. What is Geothermal Energy?. Utilize temperature of the earth’s core. Direct use: District Heating System Electricity generation Heat pumps. Locations. Ring of Fire

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Geothermal Energy

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  1. Geothermal Energy Dong Kim Chemical Engineering Energy Technology and Policy

  2. What is Geothermal Energy? • Utilize temperature of the earth’s core. • Direct use: District Heating System • Electricity generation • Heat pumps

  3. Locations • Ring of Fire • Over 20 countries: Iceland, U.S., Italy, France, China, Japan, ect. • The United States is the country with the greatest geothermal energy production

  4. Direct District Heating System • Use hot water from springs or reservoirs near the surface. • Hot water near the earth's surface can be piped directly into buildings and industries for heat.

  5. Electricity Generation • Dry Steam Power Plant: Uses the superheated, pressurized steam (180°-350°C)

  6. Electricity Generation • Flash Steam Power Plant: use hot water above 182°C (360°F) from geothermal reservoirs.

  7. Electricity Generation • Binary Cycle Power Plant: • Insufficiently hot resource to efficiently produce steam • Too many chemical impurities to allow flashing.

  8. Heat Pumps • Utilizes constant temperature of upper 10 feet of the Earth’s surface. • Similar to ordinary heat pumps, but they rely on more stable source than air.

  9. Geothermal Energy • Almost no negative impact on the environment. • Release about 1 to 3 percent of the carbon dioxide emissions of a fossil fuel plant.

  10. References • 1:http://www.worldbook.com/wb/images/content_spotlight/earth/insideearth.jpg • 2:http://en.wikipedia.org/wiki/Image:Pacific_Ring_of_Fire.png • 3:http://en.wikipedia.org/wiki/Image:2005-08-30-district-heating-pipeline.jpg • 4:http://www.geothermal.nau.edu/about/generation.shtml • 5:http://www.inhabitat.com/images/steamystuff2.jpg • http://www.eia.doe.gov/kids/energyfacts/sources/renewable/geothermal.html • 6:http://en.wikipedia.org/wiki/Geothermal_power#_note-USGeo

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