Portland, ME Airport about to Use Geothermal Heating
Portland, Maine is expanding its airport and with the renovation comes a new geothermal system for heating and cooling. The builders estimate the system will save the airport 50,000 gallons in heating oll a year. 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.
The reduction in heating oil use will amount to a significant energy bill savings for the airport –about $200,000 a year and over $8 million over the life of the system. The airport funded the installation of the heating system with a $2.5 million grant from the Federal Aviation Administration‘s Voluntary Airport Low Emission program.
via U.S. DOT Blog
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