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GEOTHERMAL ENERGY

GEOTHERMAL ENERGY. WHAT DOES THE WORD "GEOTHERMAL" MEAN?. WHAT IS GEOTHERMAL ENERGY? Energy that can be extracted from the heat in the earth Arizona Conditions are most favorable for geothermal activity where the earth's tectonic plates collide and one slides beneath another .

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GEOTHERMAL ENERGY

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  1. GEOTHERMAL ENERGY

  2. WHAT DOES THE WORD "GEOTHERMAL" MEAN? WHAT IS GEOTHERMAL ENERGY? • Energy that can be extracted from the heat in the earth • Arizona Conditions are most favorable for geothermal activity where the earth's tectonic plates collide and one slides beneath another. • The best example of these hot regions is the Pacific Ring of Fire

  3. MAP OF THE WORLD INDICATING THE RING OF FIRE Arizona Pacific Ring of fire

  4. HOW DOES GEOTHERMAL HEAT GET UP TO EARTH'S SURFACE? • Conduction • Heat from the Earth’s interior flows outward. It is transferred to the outer layer of rock or the crust. • Convection • In some regions, the mantle beneath the crust may be hot enough to partly melt and create magma. Magma rising upward out of the mantle can bring intense shallow Magma or very hot rock heat into the crust

  5. HOW HAVE PEOPLE USED GEOTHERMALENERGY IN THE PAST? • Bathing: Ancient civilizations • Medical Therapy: Early Romans • Cooking: Native Americans and others • Heating: Early Romans in Pompeii

  6. HOW DO WE USE GEOTHERMAL ENERGY TODAY? • Domestic Use: Space Heating/Cooling Water Heating • Aquaculture use: Fish, Shrimpand Alligators Drying of fruits / vegetables • Industrial Use: Dying of cloth, washing wool, piping under sidewalks to keep from freezing, manufacturing paper • Electricity Generation

  7. STATISTIC OF ELECTRICITY GENERATED IN THE U.S.FROM GEOTHERMAL ENERGY • 2700 MW Today , 0.4% of all electrical generation • Estimated additional capacityavailable5,000 – 18,000 MW Coal – 53% Nuclear – 21% Natural Gas – 15% Hydro – 7% Oil – 3% Geothermal- Wind-Solar - 1%

  8. HOW IS ELECTRICITY GENERATED USING GEOTHERMAL ENERGY?

  9. SOME OF THE ADVANTAGES OF USINGGEOTHERMAL ENERGY TO GENERATEELECTRICITY • Clean: No emissions, safe to use • Reliable: Continuous, reliable base-load power • Sustainable / Reusable: Water can be recycled back into the earth and reused. No other fuel mixture required to create electricity. • Land Conservative: No major land requirements. Can be integrated into the local area with no adverse effects • Flexible / Modular: Geothermal power plants can have modular designs, with additional units installed in increments when needed to fit growing demand for electricity

  10. Additional Sources of Information • http://www.eere.energy.gov/geothermal/ • http://www.energyquest.ca.gov/index.html • http://www.azgs.az.gov/Summer2001.htm • http://www.energy.gov/engine/content.do • http://geothermal.marin.org/hotsites.html • http://www.geothermal.marin.org/ • http://lsa.colorado.edu/summarystreet/texts/geothermal.htm

  11. THE END

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