05 May '11, 4pm

Portland, ME Airport to Use Geothermal Heating

The system will consist of a 120 wells and a series of fluid-filled pipes running about 500 feet under an employee parking lot. The parking lot will act as a heat sink and underground temperatures should stay at around 55 degrees year-round. In the summers, the fluid in the pipes will help provide cooler air to the airport, while in the winter, the fluid will help heat the air to 55 degrees before the building's heating system takes over.

Full article: http://www.ecogeek.org/geothermal-power/3496-portland-me-...

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