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'Geothermal heating' has been used since Roman times as a way of heating buildings and spas by utilizing sources of hot water and hot steam that exist near the earth's surface.^[1] Where such geothermal resources are available, it is possible to distribute hot water or steam to multiple buildings. This technique, long practiced throughout the world in locations such as Reykjavik, Iceland^[2] and Boise, Idaho, USA^[3], is known as Geothermal District heating.
In recent years, the term 'Geothermal heating' has frequently been used to refer to the heating and cooling that can be achieved through the use of a Geothermal heat pump.

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External links

Notes

1. Climate.Org - Renewable Energy: Geothermal, ''http://www.climate.org/topics/green/geo.shtml''.
2. University of Rochester - History of the utilization of geothermal sources of energy in Iceland, ''http://www.energy.rochester.edu/is/reyk/history.htm''.
3. Idaho Energy Division - District Heating Systems in Idaho, ''http://www.idwr.state.id.us/energy/alternative_fuels/geothermal/detailed_district.htm''.

See also

★ Geothermal (geology)

★ Geothermal power

★ District heating

★ Geothermal exchange heat pump

★ Geothermal heat pump

★ Geo-exchange

External links

★ Energy Efficiency and Renewable Energy - Geothermal Technologies Program

★ Geothermal Education Office

★ Geothermal Energy Association

★ Geothermal Resources Council

★ Geothermal Heating Resources UK

★ Idaho National Laboratory - Geothermal Program

★ Los Alamos National Laboratory - Hot Dry Rock Geothermal Energy Technology

★ National Renewable Energy Laboratory - Geothermal Technologies Program

★ Oregon Institute of Technology - Geo-Heat Center

★ Southern Methodist University - Geothermal Lab

★ Sequoien - Non-profit geothermal heating

★ - International Ground Source Heat Pump Association

★ - American Society of Heating, Refridgerating, and Air-Conditioning Engineers

★ - HeatSpring Energy - Geothermal Design and Education