Why is Geothermal Energy a Great Choice for an Alternative Energy Source

43 просмотров 10.03.2012 00:00:55

Описание

A geothermal system can be designed to run water through the ground outside at a level below the frost line. The ground at this point tends to remain at a stable temperature between summer and winter extremes. cleave-energy.com

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Geothermal, Energy, Great, Choice, Alternative, Source