In the expanses of the post-Soviet space, geothermal heating of houses is still not in great demand. But in Europe and North America, plants have been successfully operating for about 30 years, because the price of geothermal heating at home is just the cost of equipment.
The principle of geothermal heating
The principle of the geothermal heating of houses resembles the principle of the functioning of the refrigerator. The main operating unit of the system is a heat pump, which is mounted on both circuits. Internal is a tremendous heat exchanger located under water or in soil. It is filled with water or non-freezing liquid. The coolant takes the ambient temperature and carries it to the heat pump. Here, the heat "accumulates" and then goes to the internal circuit (radiators in the room). As you can see, the principle of geothermal heating at home is quite simple.
So, all the main work goes to the geothermal pump. This appliance is smaller than the refrigerator. Unfortunately, despite the undoubted benefit of geothermal heating at home, the installation of the system is in first place in terms of cost. Equipment for geothermal heating of a country house is not cheap in itself, and work on laying a heat exchanger is also added to it.
DIY geothermal heating
It’s realistic to equip a home’s geothermal heating system with your own hands. But very time consuming. First of all, these are very voluminous earthworks. Why they are needed, see below. There are two options for the location of the heat exchanger: vertical and horizontal. The second is used more often. Pipes need to be buried deeper into the ground than the ground freezes at your latitude.
The area occupied by the heat exchanger should be approximately 2.5 times larger than the area of the building. In this case, the trees should be at least one and a half meters. The cost of geothermal heating at home can be slightly reduced by using a vertical heat exchanger.
Vertical heat exchanger - here you can not do without special drilling equipment, since the depth of the wells for pipes should be from 50 to 200 meters. Equipment installed using this method will last at least one hundred years. The scheme is very convenient if the infield is already ennobled.
Water heat exchanger - This is a very good option for two reasons: the energy of the water is transferred faster to the heat exchanger, increasing work efficiency, excavation is completely absent. But, to the pool or pond should be no more than one hundred meters, and the depth of the pond from 2.5 to 5 meters (below the freezing line), the area of the pond is more than 200 square meters. meters. And by laying pipes in the pond, you can significantly reduce the cost of geothermal heating at home.
So, assembling geothermal home heating with your own hands is almost impossible.
Reviews
About geothermal heating at home, there are not many reviews of our compatriots. Among them come across negative ones. For example, installing equipment from a very large and serious company specializing specifically in such works, people do not get any effect. According to some reports, the price of geothermal heating at home is an average of 200 thousand dollars.
Most users who leave feedback about geothermal heating at home agree that this is too expensive and not yet an effective heating method. Experts believe that the best effect is provided by geothermal heating of a country house with an area of not more than 150 square meters. meters.
