How do GHP systems work?
Solar energy is absorbed and stored by the earth, resulting in a stable temperature a few feet below the earth’s ground surface. GHP systems take advantage of the earth’s stable temperature by utilizing the ground as a heat source during winter seasons and heat sink during summer seasons. Water flows through vertical piping buried deep and transfers heat from the building to the ground source or vice versa. The ground heat exchange system is connected to a heat pump which has the same working cycle as refrigerators with the capability of reversing the cycle and providing both heating and cooling. A distribution system consisting of ductwork distributes the hot or cold air throughout the building. Some systems contain a desuperheater which preheats tanks of water, providing hot water for low or no cost.
