How does GEOTHERMAL work?
Virtually every household has an appliance that works by using the same principles as a geothermal system: the refrigerator. The refrigerator’s internal compressor and refrigerant system have the ability to move heat from one location to another. Rather than applying cold, the refrigerator actually absorbs heat from the contents inside and deposits that heat out through the back or bottom of the appliance. A geothermal system operates in the same way with one big difference; our system has the capability of reversing the refrigerant cycle, allowing the geothermal system to heat in addition to cool.
The earth absorbs and stores approximately 48% of the sun’s solar energy. The result is a fairly constant underground temperature of 45 degrees in northern climates to 70 degrees in southern climates. The geothermal system takes advantage of this stored energy by using it to provide the most energy efficient heating and cooling system available today.
The heat exchanger, commonly referred to as a closed loop system, is buried in the ground and circulates a water solution through a series of pipes. The solution captures the stored solar energy and delivers it back to the geothermal system located in the house. The mechanical components of the geothermal unit absorb the delivered free energy which is then concentrated and compressed to raise the temperature to be distributed throughout the house using standard forced air duct work or radiant floor heat, providing comfortable indoor temperature during the winter.
The same geothermal unit and buried heat exchanger will then reverse this cycle during the cooling season to provide air conditioning. Through the use of a forced air system it is able to remove heat and humidity from the air. The captured heat is transferred and deposited back into the earth through the same series of buried pipe, providing comfortable air conditioning throughout the summer.