Photobioreactor Facade Elements - From Concept to Prototype

The research project FABIG pursues a comprehensive approach in developing facades with photobioreactors made of glass. The story-high reactor elements generate biomass that can either be processed for the pharmaceutical and food industry or used for the building energy supply. In consequence, the joint project partners Technische Universität Dresden, ADCO Technik GmbH, Arup Deutschland GmbH und SSC GmbH contribute their expertise in facade systems, adhesives, technical building systems and manufacturing.

This paper introduces microalgae, their industrial applications and different production plants for cultivation. The main section traces the development starting from the constructive concept to the realization of a prime prototype in operation. This development includes composition and function of essential constructive elements and specific load assumptions in a photobioreactor. The researchers gave significant attention to load-bearing adhesives inside the reactor exceeding current state of technology. Previous experimental tests on the adhesive and a study on the inner joint composition are presented. The study considers two joint variations and rates them according to their mechanical behavior, processing and assembly characteristics. Finally, the paper concludes with a future façade concept as flexible modular system.