Heat pump

Earth as an energy source

This works contrary to the principle of a refrigerator. Free earth energy (geothermal energy) is delivered to the heating system.
Thereby, flow temperatures of more than 50°C are reached independent of outer temperatures.

With a heat pump, your entire house, business, hall, hotel, housing area etc. can be heated using both radiators or floor heating, water heating is also included.

In Switzerland, the US and Japan, more than 40 per cent of all new heating systems already use the principle of heat pumps operating with geothermal heat.

The heat pump is as compact as a washing machine. It makes gas ports, oil tanks and chimneys redundant.

Functional principle of a heat pump

A heat pump transforms low-temperature heat into high-temperature heat.

It withdraws stored geothermal heat from the surrounding area (earth or water) and transfers it in addition to the operating power in the form of warmth to the heating and warm water circulation.

Heat cannot pass from a colder to a warmer material by itself. It always flows from a material at higher temperature to a material at lower temperature (Second Law of Thermodynamics). Therefore, the heat pump has to bring the thermal energy absorbed from the surroundings to a temperature level suitable for heating and warm water, whereby it applies high-value energy, for instance electricity (1/3) needed for the drive motor. Thus, ¾ of the required energy can be withdrawn free of charge. 

The heat pump actually works similar to a refrigerator, with the contrary benefits. It withdraws heat from the surroundings which can be used for heating, water heating and cooling.

Use of geothermal heat

Four function units work together to utilize the heat withdrawn from the environment: evaporator, liquefier, expansion valve and compressor.

Heat pumps transmit the heat which is gained from the environment in an evaporator to a refrigerant medium. A compressor increases pressure. This compression leads to a temperature rise in the refrigerant medium. 

The heat is then transmitted to the heating system in a heat exchanger. The working medium gets relieved in the expansion valve, thereby it cools down and is in consequence able to receive geothermal energy again.

The cycle starts anew.


Read more about the subsidies of a Geothermal-Use.
Read more about the filing of a Geothermal-Use.

Go on with the Geothermal System Water-Water.
Go on with the Geothermal System Probe.

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