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How energy efficient geothermal heat pump, How energy efficient is a geothermal heat pump? geothermal heat pumps are energy efficient heating and cooling units that use the sun’s natural rays to heat the.
Geothermal energy – lsa, 1. what is geothermal energy? geothermal energy comes from the heat within the earth. the word "geothermal" comes from the greek words geo, meaning earth," and therme.
Where geothermal energy ? – bright hub, Where geothermal energy ? understand origins geothermal energy, deep beneath surface earth .
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How geothermal energy generate electricity? | ehow, How geothermal energy generate electricity?. "geothermal" means heat coming earth . wide variety sources warm .