geothermal energy photos of us geological survey
TRANSCRIPT
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Geothermal Energy
Photos of US Geological Survey
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Global heat flow map prepared from the database compiled by the International Heat Flow Commission (H. N. Pollack, S. J. Hurter, and J. R. Johnson, Reviews of Geophysics, Vol. 31, 1993.)
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Global Geothermal Sites
http://www.deutsches-museum.de/ausstell/dauer/umwelt/img/geothe.jpg
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25 50 75 100/150+
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Geysers
http://en.wikipedia.org/wiki/Geyser
Clepsydra Geyser in Yellowstone
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Hot Springs
Hot springs in Steamboat Springs (CO) area.
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FumarolesClay Diablo Fumarole (CA) White Island Fumarole
New Zealand
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Methods of Heat Extraction
http://www.geothermal.ch/eng/vision.html
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A short glimpse at geothermal power
Photo courtesy of ENEL/ERGA, Italy
First experiment to produce geo-thermal power, done in Italy in 1904 by prince Ginori Conti
Modern geothermal power plants in Larderello, Italy
Photos: Lund
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Dry Steam Schematic
Boyle, Renewable Energy, 2nd edition, 2004
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Geysers dry steam field in northern California
© 2000 Geothermal Education Office
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Geysers Geothermal PlantThe Geysers is the largest producer of geothermal power in the world.
http://www.ece.umr.edu/links/power/geotherm1.htm
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Single Flash Steam Schematic
Boyle, Renewable Energy, 2nd edition, 2004
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Flash steam plant in Japan
© 2000 Geothermal Education Office
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Binary Cycle Schematic
Boyle, Renewable Energy, 2nd edition, 2004
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Binary plant in Nevada
© 2000 Geothermal Education Office
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Hot Dry Rock Technology: Enhanced Geothermal System (EGS)
Fenton Hill plant, NM – First EGS test facility, abandoned in 1992.
http://www.ees4.lanl.gov/hdr/
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Enhanced Geothermal System
25 MW Demonstration Plant at Cooper Basin, Australia Estimated to have 5-10 GW potential Useful life might be 20-30 years, before rock cools off too much
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1932
2000
© 2000 Geothermal Education Office
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“Blue Lagoon,” Iceland (Svartsengi Geothermal Power Plant)
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“Blue Lagoon,” Iceland (Svartsengi Geothermal Power Plant)
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Direct uses of geothermal energy are appropriate for sources below 1500C
• space heating• air conditioning• industrial processes• drying • Greenhouses• Aguaculture• hot water• resorts and pools• melting snow
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Geothermal greenhouse in Nigrita, Greece
Cultivation of spirulina(red) algae using geothermal heat
Geothermal Greenhouses
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Geothermal “sun-dried” tomatos drying in Northern Greece
The finished product
Geothermal application inthe food industry
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Geothermal fish drying in Northern Iceland
The finished product
Fish factory in Laugar, Iceland
Geothermal application inthe food industry
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Daily St. Louis High and Low Temperatures
How can we save the heat from the summer and use it in the winter?
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Residential Geothermal Heat Pump
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Heat vs. Depth Profile
Boyle, Renewable Energy, 2nd edition, 2004
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A typical household can save $1500 a year or more.
This can give most systems a payback period of three to five years.
GSHP's are more than three times as efficient as the most efficient fossil fuel furnace.
They deliver three units of energy for every one unit used to power the heat-pump system.