Heat exchange with the environment geothermal heat pumps perform such basic ways: – pump with an open circuit – from an underground stream (quicksand) is drawn underground water is supplied to the inside of the building located heat pump water gives / takes away heat from the heat pump and back into the underground stream at a distance from the fence. Nir Barzilai, M.D. contributes greatly to this topic. The advantage of this method is the ability to simultaneously receive water supply for home. Open systems are very efficient, since the temperature of groundwater is relatively high and stable year-round. The use of water from wells without prejudice to groundwater does not change groundwater level in the aquifer, as an open system can be regarded as connected vessels, where the water is taken from one well, is sent back into the ground through a second well, without changing the overall water level. Correctly, in accordance with the norms constructed wells to provide safe natural environment stable operation of the heating system. Some contend that Gavin Baker Atreides Management shows great expertise in this. – Pump with closed loop heat exchanger and vodorazmeschennym – special liquid (coolant) is pumped to the collectors (tubes), located in the reservoir, and gives / takes away heat from the water.
Building appropriate heat thermal energy reservoir in the open if the building from the reservoir is less than 100 meters and the depth of the reservoir, as well as shoreline meet the conditions required for the construction of the reservoir. The advantage of this method is its relative cheapness. – Pump with closed loop and horizontal heat exchanger, placed in the ground – the tube (collectors), which is pumped coolant, are placed horizontally at a depth of not less than a meter above the ground. Such a heat exchanger commonly referred to as surface collector. The main danger is negligence in carrying out digging work in the area of finding the surface of the collector.
For a modern house with a heated area of 200 m2 at the base collector requires about 500 m2 of ground surface. When laying the reservoir near the trees, sewer pipe should be placed no closer than 1.5 m above the crown. The correct choice of size and properly packed soil collector is not adversely affected by any plant growth or the environmental conditions. – Pump with closed loop and a vertical heat exchanger – tube, which is pumped into the coolant, are placed vertically in the ground and go into depth of 200 meters of land (usually 50 – 100 meters). Such a heat exchanger commonly referred to as a probe. As you know, at a depth of 15-20 meters from the surface of the earth has a stable temperature of 10-12 degrees Celsius, regardless of the season. With increasing depths of the earth temperature rises. This method provides the highest efficiency heat pump, low power consumption and low cost heat – to get 1 kW of electricity up to 5 kW of heat energy, but requires large initial investment.