What is geothermal energy? Why is geothermal important? · Why isn't all subsurface water hot? Ground water: Water that exists beneath the earth's surface in underground streams and

What is geothermal energy?

Why is geothermal important?

Where do we find it?

How do we use it?

Why is geothermal important?

● Clean energy● Renewable● Cheap

http://geothermal.marin.org/GEOpresentation/images/img037.jpg

What is clean energy?

http://arthurpage.files.wordpress.com/2009/02/coal-power-plant.jpg

http://paradiseprofits.files.wordpress.com/2009/07/geothermal-power-plant-i01.jpg

Where do we find geothermal resources?

http://www.latimes.com/media/graphic/2008-11/43174037.gif

http://smu.edu/geothermal/heatflow/geothermal_all_us_clipped_150dpi_pagesize_legend.gif

Why is it hot?

http://www.geothermal-energy.org/pliki/Image/geo/What_is_geothermal_en_html_m79881583.jpg

http://oceansjsu.com/images/exp5_interior_earth.gif

Why isn't all subsurface water hot?

Why isn't all subsurface water hot?

● Ground water: Water that exists beneath the earth's surface in underground streams and aquifers

● Aquifer: an area that contains large amounts of water under the surface of the earth

● Geothermal water: water heated by the natural heat inside the Earth

● Geothermal reservoir: a large volume of underground hot water and steam in porous and fractured hot rock. Geothermal reservoirs are sometimes covered by a layer of impermeable rock.

Where does Boise's geothermal come from?

http://www.geothermal-energy.org/pliki/Image/geo/What_is_geothermal_en_html_4983ad05.jpg

Geothermal recharge

http://www.volker-goebel.biz/Geothermal_energy_plant_Swizerland_egs.jpg

Efficiency

http://www.geothermal-energy.org/pliki/Image/geo/What_is_geothermal_en_html_m22e51466.jpg

Direct use geothermal

How do we extract the energy?