On a sustainable path - Tamási

Meeting the heating gas demand of public buildings became an increasing financial burden for the municipality. Traditional methods (e.g. façade insulation, replacement of windows and doors) only partially solved the problem.

The first step towards a solution was a geothermal heating system that uses the available thermal water to heat the buildings.

A pair of thermal wells form the basis of the system: the production well brings up the 47°C water from a depth of 1,000 metres; while the injection well presses back the water, which has been pre-circulated in the town, to a depth of 750 meters.

14 public institutions of the city were connected to this system, which operates with a heat loss of 1-2°C down to the last point, thanks to a fully closed, automatic control system.

To further reduce natural gas consumption, a biomass heating plant has been added to the system, which, in addition to help meeting peak heating demand, also provides 100% heating security. The biomass boiler can be loaded up to nearly 1300 megawatts and can be used down to -10°C.

To run the biomass heating plant, green and wood waste are collected from the city and chipped, and woodchips are also purchased from an external contractor and burned in the biomass boiler.