Geothermal Power Plants

Geothermal power plants convert the energy of high temperature and pressure water found in the deeper layers of the Earth into electricity.

Our geothermal power plants are able to produce clean electricity from water and steam at different temperatures (55C°-250C°).

There are several types of geothermal power plants, which can be characterized and categorized based on the extracted water/steam.

dry steam plants

If the extracted medium is high-pressure steam, it is directed directly to the turbine, which drives the generator. Hungary does not have the geological conditions for this procedure.

hybrid steam-water plants

If medium-pressure wet steam is extracted from the geothermal well (less than 33 Bar(a)), then for the purpose of pressure reduction and energy production, steam is led to the so-called WST (Wet Steam Turbine) Lysholm double rotor turbine in the first round. Then the now expanded steam (hot water) coming from the condenser of the WST unit goes to the inlet side of the ORC (Organic Rankine Cycle) turbine, and in a hybrid second round the residual heat is extracted from it by condensing it further up to 35 C°.

binary cycle power plants

When low-temperature steam or water is extracted and its heat is utilized, it is worthwhile to install a two-circuit power plant. In this case, the extracted water is led through a heat exchanger, where it transfers its heat to a material with a lower boiling point in the secondary circuit. The advantage of these power plants is that they do not emit harmful substances and can also be used in waters with a lower temperature, so our applicability is wider.