How Geothermal Systems Work
A GHP system moves the heat from the earth, or a groundwater source,
into the home through a heat pump/exchanger in winter and pulls the
heat out of the house and discharges
it into the ground in the summer. Underground piping loops serve as
a heat source in the
winter and a heat sink in the summer. A pump circulates
temperature-sensitive fluid through
the ground loop.
A few feet below the earth’s surface, the ground temperature remains
at a relatively constant
temperature. Depending on latitude, ground temperatures usually
range from 45 degrees F to
75 degrees F (7 degrees C to 21 degrees C), even when temperatures
outside can range from
sub-zero in winter to scorching highs in summer. A GHP system can
take advantage of this
constant temperature by exchanging heat with the earth through a
ground heat exchanger.

View
Geothermal Case Study Here:
View Geothermal PowerPoint
Here: