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/ear th/insideearth.jpghttp://www.worldbook.com/wb/images/content_spotlight/ear th/insideearth.jpg  2:http://en.wikipedia.org/wiki/Image:Pacific_Ring_of_Fire.pnghttp://en.wikipedia.org/wiki/Image:Pacific_Ring_of_Fire.png  3:http://en.wikipedia.org/wiki/Image:2005-08-30-district- heating-pipeline.jpghttp://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.jpghttp://www.inhabitat.com/images/steamystuff2.jpg  http://www.eia.doe.gov/kids/energyfacts/sources/renewable/ geothermal.html http://www.eia.doe.gov/kids/energyfacts/sources/renewable/ geothermal.html  6:http://en.wikipedia.org/wiki/Geothermal_power#_note- USGeo