Forschungsgruppe-NET - Hochschule Offenburg

Solar Heat

Student Village Freiburg Vauban

The student village Vauban at Freiburg/ Breisgau consists of former military barracks that were renovated and partly reconstructed between 1993 and 1998. The renovation included the windows, the insulation of the buildings as well as new pipes for the potable water supply. Responsible for the student village is the student union of Freiburg University.

The collector field is integrated into the roof of one building and provides the warm water supply for the entire student village. Additional gas boilers reheat the warm water to the required temperature. Originally, each building had a separate warm water tank, which was fed with cold water and heated via remote two-pipe connection by the central heating block. With the installation of the solar thermal system, the pipeline network was changed such that now all the cold water that needs heating flows through the central heating where it is heated and then distributed to each building.

The student village was chosen for the program Solarthermie-2000 for several reasons. First, the relatively modern conventional housing technology, second the good condition of the renovated buildings, third the good demonstration effect, which is not least due to the frequent change of occupants of the dorms and, eventually the fact that the heat production costs would more than likely remain below 0,128 €/kWh. We based our expectation of meeting the cost limit on the favorable climate location of Freiburg, for one, but also on the good quality of the buildings themselves (compact installation of the collector field, collector field next to the central heating block, existing pipes connecting the roof to the central heating block). Together this ensured a very cost- effective installation of the entire solar thermal system.



Project Partners


Student Union Freiburg
Schreiberstraße 12-16
79098 Freiburg
Dipl.-Ing. (FH) Jochen Gerlach
phone +49 (0) 761 2101-283


Studentendorf Vauban
Merzhauserstraße 154/15
79100 Freiburg


Ingenieurbüro Michael Fischer
Hochstetterstraße 9
79206 Breisach
phone +49 (0) 7667 944-20


Firma Schmid
Heizung - Lüftung - Sanitär
Reblingstraße 11
79227 Schallstadt-Wolfenweiler





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Project Management Jülich on behalf of the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety
Berlin Office
Breite Straße 3
10178 Berlin
Dr. Peter Donat
phone +49 (0) 30 20199-427

Scientific and Technical Assistance

University of Applied Sciences Offenburg
Badstraße 24
77652 Offenburg
Prof. Elmar Bollin
Dipl.-Ing. (FH) Huber
phone +49 (0) 781 205-294

Program Monitoring

ZfS Rationelle Energietechnik GmbH
Verbindungsstraße 19
40723 Hilden
Dr. Felix Peuser
Dipl.-Ing. Reiner Croy
phone +49 (0) 2103 2444-0