Geothermal works
From Parade Magazine for Earth Day 2015:
Earth Day Across America
Minnesota
Minnesota’s Blue Earth County Justice Center (jail, plus office and courts) is kept warm by a geothermal heating system that consists of 48 miles of tubes under the facility. In the middle of the Minnesota winter, water in the tubes absorbs ground heat, which can be converted to air that heats the prison.
Earth Day Across America
Minnesota
Minnesota’s Blue Earth County Justice Center (jail, plus office and courts) is kept warm by a geothermal heating system that consists of 48 miles of tubes under the facility. In the middle of the Minnesota winter, water in the tubes absorbs ground heat, which can be converted to air that heats the prison.
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