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Using solar heat in office and administrative buildings

Facade systems with integrated evacuated tube collectors developed

Many modern office and administrative buildings attract the attention of passers-by with their large facades and glass surfaces. In order to put these surfaces to further use for heat and daylight provision in the future, researchers have developed a new facade system into which high performance evacuated tube collectors have been integrated.

The new facade system offers a view to the outside at all times.
© University of Stuttgart, IBK 2

The BINE Projektinfo brochure “Facade collectors with perspective” (07/2013) presents the research project and a first pilot system.

The new facade system fulfils three functions. The collectors contribute to the building heat supply. This heat can be used for providing hot water, supporting the heating system and for thermal cooling. The system is designed in such a way that the indoor areas are lit with semi-transparent daylight. The new facade elements also contribute to sun protection in the indoor areas. This can reduce the need for cooling in the building by up to 90 percent.

The Institut für Baukonstruktion at the University of Stuttgart has developed the new system in collaboration with partners from the scientific and industrial fields. The pilot system was installed at Ritter XL Solar in Langensteinbach near Karlsbad. The first technical results and the feedback given by staff working in the building are highly promising. The new system has been awarded several prizes for technology and design.

The BINE Projektinfo brochure, which can be obtained free of charge from the BINE Information Service at FIZ Karlsruhe, is available online at or by calling +49 (0)228 92379-0. The brochure cover and additional image material is also available for download on this web portal in the press section.

Press contact
Uwe Milles
About BINE Information Service
Energy research for practical applications
The BINE Information Service reports on energy research topics, such as new materials, systems and components, as well as innovative concepts and methods. The knowledge gained is incorporated into the implementation of new technologies in practice, because first-rate information provides a basis for pioneering decisions, whether in the planning of energy-optimised buildings, increasing the efficiency of industrial processes, or integrating renewable energy sources into existing systems.

About FIZ Karlsruhe

FIZ Karlsruhe – Leibniz Institute for Information Infrastructure is a not-for-profit organization with the public mission to make sci-tech information from all over the world publicly available and to provide related services in order to support the national and international transfer of knowledge and the promotion of innovation.
Our business areas:
• STN International – the world’s leading online service for research and patent information in science and technology
• KnowEsis – innovative eScience solutions to support the process of research in all its stages, and throughout all scientific disciplines
• Databases and Information Services – Databases and science portals in mathematics, computer science, crystallography, chemistry, and energy technology

FIZ Karlsruhe is a member of the Leibniz Association (WGL) which consists of 87 German research and infrastructure institutions.

Rüdiger Mack | idw
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