This working group explores energy-efficient systems, concepts and technologies, which provide user-oriented indoor climate in an environmentally friendly way. As it takes an ideally adjusted system of architecture and technical building systems to achieve a sustainable, efficient indoor environment, the group develops solutions to optimally fulfil the users' requirements, such as thermal comfort, energy efficiency, occupational and operational safety. The group creates holistic planning approaches for new projects and for existing buildings, which offer maximum comfort while using only minimum energy input.
In addition, the working group focuses on the integration of structural, technical and function-specific measures in the field of central building control systems and building automation. To optimise building operation and to achieve a high level of energy efficiency in complex buildings, the different building services systems (such as heating, ventilation, cooling or lighting and shading systems) need to be adjusted and integrated in an overall system. The group develops components and control algorithms for this purpose. Special attention is attributed to the consistency in communications of bus systems and their implementation, allowing for virtual and laboratory testing of the components with regard to their integration in »third-party« systems. This allows developing methods for failure detection and diagnosis in buildings.
In the scope of a funding measure launched by the German Federal Ministry for Economic Affairs and Energy the working group recently created a singular test environment to investigate and advance integrated networks of technical building systems. Based on a hardware-in-the-loop approach, the platform comprises devices for heat and cold generation (CHP with coupled absorption chiller, gas condensing boiler, compression chiller, heat pump) which are linked to several consumer buildings by a local district heating network, thus allowing performing flexible tests on different combinations of systems. In connection with the implementation of the EU eco-design directive, current projects to determine and validate the system efficiency of combinations of systems are getting started. In close cooperation with industrial companies and associations, simple evaluation models for efficient systems combinations are being developed on the basis of comprehensive measurement series and coupled simulation models.