German Aerospace Center (DLR e.V.)

DLR is the national aeronautics and space research centre of the Federal Republic of Germany. Its extensive research and development work in aeronautics, space, energy, transport and security is integrated into national and international cooperative ventures. In addition to its own research, as Germany’s space agency, DLR has been given responsibility by the federal government for the planning and implementation of the German space programme. DLR is also the umbrella organisation for the nation’s largest project management agency.

DLR has approximately 8000 employees at 20 locations in Germany: Cologne (headquarters), Augsburg, Berlin, Bonn, Braunschweig, Bremen, Bremerhaven, Dresden, Goettingen, Hamburg, Jena, Juelich, Lampoldshausen, Neustrelitz, Oberpfaffenhofen, Oldenburg, Stade, Stuttgart, Trauen, and Weilheim. DLR also has offices in Brussels, Paris, Tokyo and Washington D.C.

Contribution to INN-BALANCE:

DLR leads the development of the thermal management module. On basis of a conventional fuel cell system cooling circuit, conceptual improvements as well as improvements of components are developed in collaboration with project partners. The improved system is built up and verified in a full-scale demonstrator. A focus of the scientific contribution to the project is the cold start of the fuel cell system. For this purpose, the conventional cooling circuit is enhanced to enable cold start with minimum heat capacity for rapid heat up. On the other hand, a novel cold start concept is investigated. This novel approach is based on the injection of a special anti-freeze liquid which inhibits the formation of ice and supports the heat up of the cell during cold start. Any system development is accompanied by corresponding simulation.


Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Institut für Technische Thermodynamik | Pfaffenwaldring 38-40
D-70569 Stuttgart, Germany