Heat pumps opening!
Ground-source heat pumps absorb heat from the ground or an underground body of water and transfer it indoors, or vice versa. The most common type of ground-source heat pump transfers heat directly from the ground by absorbing it through buried pipes filled with water or a refrigerant. Ground-source heat pumps that pump liquid through pipes can be either closed-loop or open-loop systems. In a closed-loop system, the same refrigerant or water circulates through the pipes repeatedly. In an open-loop system, water is pumped out of the water source, such as a well or a man-made lake, and when the heat has been extracted from the water, that water returns to the well or surface lake. More water is then pumped from the well to extract more heat.
Aug 22, 2009
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