The Values of Geothermal Energy: - Geothermal Energy Association
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Transcript of Geothermal energy
Geothermal EnergyDong 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 Over 20 countries: Ice
land, U.S., Italy, France, China, Japan, ect.
The United States is the country with the greatest geothermal energy production
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.
Electricity Generation Dry Steam Power Plant: Uses the
superheated, pressurized steam (180°-350°C)
Electricity Generation Flash Steam Power Plant: use hot
water above 182°C (360°F) from geothermal reservoirs.
Electricity Generation Binary Cycle Power Plant:
Insufficiently hot resource to efficiently produce steam
Too many chemical impurities to allow flashing.
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.
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.
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/renewabl
e/geothermal.html 6:http://en.wikipedia.org/wiki/Geothermal_power#_note-USG
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