How does it operate? and how to buld it

Hi nobleresearcher,

Thank you for a very interesting question!


How Geothermal works - Slideshow!  This is awesome...
http://www.geothermal.marin.org/GEOpresentation/sld037.htm

You can move to the next slide either by clicking the right arrow
bottom of each image, or clicking anywhere on the slide image.

There are over 100 pictures or diagrams to view.  :)

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Geothermal Energy is energy from heat inside the Earth. 
http://www.darvill.clara.net/altenerg/geothermal.htm

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Geothermal Energy Facts 
http://geothermal.marin.org/pwrheat.html

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Rotokawa and Mokai are geothermal power stations operated by Mighty
River Power. These plants generate Electricity from renewable
geothermal fluid drawn from deep beneath the earth's surface.
http://www.mightyriverpower.co.nz/lakes_power_stations/power_stations/geothermal/

(See diagram)

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Best regards,
tlspiegel

Assuming that you are talking about a geothermal heat pump, this site
may be helpful:

http://www.geoexchange.org/