The geothermal heat exchanger at the building of the Federal Environmental Agency in Dessau

The geothermal heat exchanger consists of three fields in the western and one larger field in the southern part of the site. They form a subterranean system of pipes with a total length of almost 5 km, through which air flows. Outside air enters the system via three intake structures on the western side of the building. After passage through the heat exchanger pipes, the air is fed to four air-handling units inside the building.