1 / 36

Geothermal Energy: An Overview

Geothermal Energy: An Overview. Kenneth M. Klemow, Ph.D. Wilkes University. © 2000 Geothermal Education Office. Points to be covered. The deep earth as a thermal source Direct uses of geothermal energy Types of geothermal electrical generation Benefits of geothermal power generation

charleen
Download Presentation

Geothermal Energy: An Overview

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Geothermal Energy: An Overview Kenneth M. Klemow, Ph.D. Wilkes University

  2. © 2000 Geothermal Education Office

  3. Points to be covered • The deep earth as a thermal source • Direct uses of geothermal energy • Types of geothermal electrical generation • Benefits of geothermal power generation • Current levels of electrical generation capacity worldwide • Issues regarding geothermal • The WebQuest

  4. 20-65 km 5-6 km (6940 km) (2900 km) © 2000 Geothermal Education Office

  5. Temperature and depth • Average gradient: • 2.5 - 3.0oC / 100m • Variation: • 1.0 - 25oC / 100m • So if assuming average, temps at depth will be:

  6. © 2000 Geothermal Education Office

  7. iga.igg.cnr.it

  8. iga.igg.cnr.it

  9. iga.igg.cnr.it

  10. Direct Electrical generation www.energywhiz.com www.coloradodirectory.com/cottonwoodhotsprings/ Geothermal energy is used in two ways

  11. www.strose.edu www.hickerphoto.com www.geothermal-biz.com geothermal.marin.org www1.eere.energy.gov Direct uses of geothermal energy

  12. http://iga.igg.cnr.it/geo/geoenergy.php

  13. http://iga.igg.cnr.it/geo/geoenergy.php

  14. Types of geothermal electrical generation • Dry steam • Flash steam • Binary cycle

  15. © 2000 Geothermal Education Office

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

  17. © 2000 Geothermal Education Office

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

  19. © 2000 Geothermal Education Office

  20. © 2000 Geothermal Education Office

  21. Binary plant in Nevada © 2000 Geothermal Education Office

  22. Benefits of geothermal power • Provides safe and reliable power with little land consumption • Renewable and sustainable • Provides constant baseload power • Conserves fossil fuels • Benefits local economies • Can be implemented remotely • Can prevent pollution caused by fossil fuels © 2000 Geothermal Education Office

  23. 1932 2000 © 2000 Geothermal Education Office

  24. Geothermal electrical power output geothermal.marin.org

  25. © 2000 Geothermal Education Office

  26. © 2000 Geothermal Education Office

  27. What is potential for geothermal energy development? • Geothermal power could serve 100% of the electrical needs of 39 countries (over 620,000,000 people) in Africa, Central/ South America and the Pacific. (Source:www.geotherm.org/PotentialReport.htm link)

  28. What is potential for geothermal energy development? • Using current technology, geothermal energy from already-identified reservoirs can contribute 10% of U.S. energy supply. • With more exploration, inventory can become larger. • Entire world resource base of geothermal energy calculated to be larger than those of coal, oil, gas and uranium combined. • Further research and experience will improve geothermal resource base. geothermal.marin.org/

  29. What is potential for geothermal energy development? • According to Geothermal Energy Association (GEA), geothermal resources could supply over 30,000 MW of power by 2025 • Equivalent to 6 percent of today's total U.S. electricity needs, and equal to 100% of the electricity generated in California, Nevada and Idaho. geothermal.marin.org/

  30. http://www.greenjobs.com/Public/images/geothermal-jobs.gif Employment in geothermal?

  31. www.nwcommunityenergy.org Location of geothermal potential in US

  32. Geothermal heat pumps © 2000 Geothermal Education Office

  33. Benefits of geothermal heat pumps • Can be used almost anywhere worldwide • Are energy and cost efficient • Conserve fossil fuel resources • Provide clean heating and cooling; no emissions from burning fuels Deployment: 400,000 units in U.S. Yield: 1500 thermal mW of heating and cooling

  34. Any environmental problems? http://iga.igg.cnr.it/geo/geoenergy.php

  35. One clear environmental benefit

  36. So, is geothermal the answer to our energy concerns? You tell me!

More Related