How Geothermal Works
Geothermal systems use the Earth's energy storage capability to heat and cool buildings, and to provide hot water. The earth is a huge energy storage device that absorbs 47% of the sun's energy-more than 500 times more energy than mankind needs every year-in the form of clean, renewable energy. Geothermal takes this heat during the heating season at an efficiency approaching or exceeding 400%, and returns it during the cooling season. Geothermal heating and cooling systems use conventional vapor compression heat pumps to extract the low-grade solar energy from the earth. In summer, the process reverses and the earth becomes the heat sink.
Loop Diagram During Heating Mode
Loop Diagram During Cooling Mode