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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