1. Geothermal Energy Photos of US Geological Survey

5. 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.)

8. Global Geothermal Sites http://www.deutsches-museum.de/ausstell/dauer/umwelt/img/geothe.jpg

9. 25 50 75 100/150+

11. Geysers http://en.wikipedia.org/wiki/Geyser Clepsydra Geyser in Yellowstone

12. Hot Springs Hot springs in Steamboat Springs (CO) area.

13. Fumaroles Clay Diablo Fumarole (CA) White Island Fumarole New Zealand

14. Methods of Heat Extraction http://www.geothermal.ch/eng/vision.html

15. 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

16. Dry Steam Schematic Boyle, Renewable Energy, 2 nd edition, 2004

17. Geysers dry steam field in northern California © 2000 Geothermal Education Office

18. Geysers Geothermal Plant The Geysers is the largest producer of geothermal power in the world. http://www.ece.umr.edu/links/power/geotherm1.htm

19. Single Flash Steam Schematic Boyle, Renewable Energy, 2 nd edition, 2004

20. Flash steam plant in Japan © 2000 Geothermal Education Office

21. Binary Cycle Schematic Boyle, Renewable Energy, 2 nd edition, 2004

22. Binary plant in Nevada © 2000 Geothermal Education Office

23. 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/

24. 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

25. 1932 2000 © 2000 Geothermal Education Office

26. “Blue Lagoon,” Iceland (Svartsengi Geothermal Power Plant)

28. Direct uses of geothermal energy are appropriate for sources below 150 0 C space heating air conditioning industrial processes drying Greenhouses Aguaculture hot water resorts and pools melting snow

29. Geothermal greenhouse in Nigrita, Greece Cultivation of spirulina (red) algae using geothermal heat Geothermal Greenhouses

30. Geothermal “sun-dried” tomatos drying in Northern Greece The finished product Geothermal application in the food industry

31. Geothermal fish drying in Northern Iceland The finished product Fish factory in Laugar, Iceland Geothermal application in the food industry

32. Daily St. Louis High and Low Temperatures How can we save the heat from the summer and use it in the winter?

33. Residential Geothermal Heat Pump

34. Heat vs. Depth Profile Boyle, Renewable Energy, 2 nd edition, 2004

37. 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.