German Home- page of Annex 36 Homepage of the International Energy Agency (IEA-ECBCS)		University of Stuttgart   Address Universität Stuttgart Pfaffenwaldring 47 70550 Stuttgart, Germany   IWZ ETI 1 Year of construction 1975 1984 Year of renovation 1997 1997 Total floor area 30500 m² 14500 m² Hours of operation offices 12 12 Hours of operation labs up to 24 up to 24 University buildings normally use very sophisticated HVAC systems. These systems have to be adapted to the actual user needs quite frequently. If this is not done on a regular basis energy consumption becomes quite heavy. The adaptation of the systems can be financed through third party contracting. The renovation of the HVAC system of two buildings of the University of Stuttgart provides an impressive example. Retrofit features: The project concentrated only on the technical systems. No retrofit of the building envelope was undertaken. Thus the financing could be achieved completely on the base of performance contracting.   total report as pdf-download in English   © 2004 Fraunhofer Institute for Building Physics