The temperature of the bowels of the globe does not change widely, depending on the season and its value varies between 10 ° and 20 ° C, depending on geographical latitude. Geothermal thermal pumps use this relatively stable temperature as a source for heating a house in winter and cooling them in the summer.
Through the system of underground pipes, pumps remove heat from the inside of the building in the summer, and in winter the reverse process occurs. Because geothermal thermal pumps actually only transport heat between the house and the Earth and vice versa, this process is distinguished by purity and high efficiency.
Thermal pumps are the products of high -tech production of developed countries producing them with a capacity of up to 1000 kW. The most productive, but the most expensive thermal pumps take heat from the ground. In practice, it looks like this.
The pipeline, which is a circuit with an antifreeze circulating in it, is laid at a depth with a plus temperature. As a rule, this is not more than half a meter below the level of freezing, which is the norm accepted for a given area.
Geothermal heating of the house
The drilling procedure that is not necessary with this method of selecting geothermal heat is more than compensated by large -scale earthen works carried out on a significant area.
And a little theoretical calculation. For obtaining and devices of geothermal installation producing power 10 kW. Values sufficient to provide a middle -sized country house – the length of the laid contour should be approximately 400 meters. Without difficulty, you can cope with a similar task on the area of the site with sides of 20 by 20 meters
Heating with a heat pump
Like all heating systems, a geothermal heating system is also inherent in a number of disadvantages. The main of which is the high cost of equipment. The second most important disadvantage should be considered the complexity of installation and the complexity of the laying process of the contour in the ground. And the last drawback characteristic of all systems with thermal pumps is the low temperature of heated water not exceeding a value of +60 ° degrees.
Of the advantages of using the heat of the land of the land for heating, it is necessary to note the purity and high efficiency of the process, so to obtain 1 kW of thermal energy, it is necessary to spent on the operation of the components of the system of electricity only 0.2kW and these are the only operational cost of the installation work.
