by Kister scheithauer gross architekten / Bayreuth, Germany



Shaping Research – New building for the Fraunhofer-Center HTL Bayreuth

The new building of the Fraunhofer-Center for High Temperature Materials and Design HTL, which belongs to the Institute for Sili- cate Research ISC, is used for the develop- ment of high-temperature materials for energy, propulsion and heat technology as well as aerospace technology. The two- storey building complex with an exceptional ceramic façade was implemented by kister scheithauer gross. Cologne, 10.09.2015 – “During the jury ses- sion I was already convinced that the design by ksg can exactly meet our request for a both functional and expressive research building”, remembers Dr. Friedrich Raether, Head of the Fraunhofer Center HTL, the initial phase of the project, a German-wide two-phase competition. Now, about three years later, the building could be turned over to the user. On a gross floor area of 5,800 m2, laborato- ries, workshops, furnace halls, product de- velopment areas, chemical storage rooms, evaluation rooms as well as offices and meeting rooms were laid out with an effec- tive floor area of 2,600 m2. The research fo- cus of the Fraunhofer Center for High Tem- perature Materials and Design HTL is the quality improvement and material and ener- gy efficiency of industrial heating processes. The new building is divided into a square one-storey technology and laboratory area with partly two-storey halls as well as a nar- row two- to three-storey office wing. This stringent separation of uses can be recog- nised both inside and outside the building. The office section with rooms for meetings and presentations on the ground floor pro- trudes beyond the sloping site and offers generous views across Bayreuth. Making use of the hillside location, the building is also visible from the through road running past in the west. Sanitary and changing rooms as well as a lounge area are posi- tioned at the intersection of both functional.

Innovative façade design

The façade design has been derived from the traditional craquelé glazing technique and is further developed as a recurrent net pattern on the envelope. That way, the new building with its distinctive ceramic façade represents the research focus of the HTL. “Shaping research is a theme for us that opens up wonderful design scopes”, explains office partner Johannes Kister. “Glazed ce- ramic is fired at high temperatures, often subjected to great temperature variations and can form fine, irregular cracks on the surface. We take up this so-called crazing as a motif for our façade design and apply it to the entire façade surface in the form of a regularnetpattern”,explainsProf.Johannes Kister the basic idea. The ceramic façade material and the treat- ment of joints create an equally spectacular and disciplined appearance for the institute. Highly Efficient System for the Use of Daylight The design by kister scheithauer gross is not limited to an optically expressive research building. The use of innovated novelties from the building sector made it possible to optimize the energy efficiency of the building and fulfill high functional standards. Be- cause requirements on working conditions in technology buildings are especially high, kister scheithauer gross chose the func- tional glass OKASOLAR F U from OKALUX for the conically shaped hall windows in the technology and laboratory rooms of the Fraunhofer – Center to ensure a glare-free and comfortable working atmosphere. Fixed louvres are integrated in the cavity between the panes of this efficient light-directing sys- tem. These reflect a large part of the solar ra- diation to the outside protecting the interior from exposure to direct sun rays resulting in a lowering of the cooling load due to the considerably reduced heat input in the building. In this way, the functional glass plays a significant role in optimizing the total energy balance of the institute building.
There is more to the efficiency of the solution chosen by kister scheithauer gross than the energetic side. Natural light has a large influence on the psychological and physical wellbeing of humans as well as on their con- centration and efficiency. The special glass gives architects complete control over the direction of light enabling them to create a comfortable daylight atmosphere in the interior rooms. This is the best prerequisite for innovative developments.

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