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2. Geothermal heating - Wikipedia

   en.wikipedia.org/wiki/Geothermal_heating

   Heat pipes extend the temperature range down to 5 °C (41 °F) as they extract and "amplify" the heat. Geothermal heat exceeding 150 °C (302 °F) is typically used for geothermal power generation. [6] In 2004 more than half of direct geothermal heat was used for space heating, and a third was used for spas. [1]

3. Renewable heat - Wikipedia

   en.wikipedia.org/wiki/Renewable_heat

   Hot Springs located in Nevada. Geothermal energy is accessed by drilling water or steam wells in a process similar to drilling for oil. Geothermal energy is an enormous, underused heat and power resource that is clean (emits little or no greenhouse gases), reliable (average system availability of 95%), and homegrown (making populations less dependent on oil).

4. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.

5. Geothermal energy will heat and cool this Cudahy home. Find ...

   www.aol.com/geothermal-energy-heat-cool-cudahy...

   Beginning construction and how the geothermal system works. He began construction on the home in early December with the installation of a horizontal loop field by G. O. Loop of Fox Lake about 8 ...

6. The future is just about now: heating your house with ... - AOL

   www.aol.com/2008/11/18/the-future-is-just-about...

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7. Direct exchange geothermal heat pump - Wikipedia

   en.wikipedia.org/wiki/Direct_exchange_geothermal...

   DX system being drilled in the 1980s. A direct exchange (DX) geothermal heat pump is a type of ground source heat pump in which refrigerant circulates through copper tubing placed in the ground unlike other ground source heat pumps where refrigerant is restricted to the heat pump itself with a secondary loop in the ground filled with a mixture of water and anti-freeze.

8. Major geothermal bills pass House, widening path for clean ...

   www.aol.com/news/major-geothermal-bills-pass...

   Two bills making it easier to tap the Earth’s heat for on-demand clean power have passed the House. The CLEAN Act and HEATS Act remove many of the federal permitting regulations currently ...

9. Geothermal energy in the United States - Wikipedia

   en.wikipedia.org/wiki/Geothermal_energy_in_the...

   The Sonoma Calpine 3 geothermal power station of The Geysers. Geothermal energy in the United States was first used for electric power production in 1960. The Geysers in Sonoma and Lake counties, California was developed into what is now the largest geothermal steam electrical plant in the world, at 1,517 megawatts. Other geothermal steam ...