Welcome to GeoTabs.EU
GEOTABS international Symposium
January 22, 2013, Hanover, Germany
GEO-HPs and TABS are both state-of-the-art technologies. However, the potential energy savings are rarely reached in practice due to bad integration of the different subsystems and inefficient control. By using TABS, the concrete slabs shift from being a purely structural element to a crucial component within a global system. Furthermore, careful attention should be paid to the thermal balance of the ground by extracting heat in winter and injecting heat in summer. The complex interaction of processes, characterized by a broad range of thermal time constants, asks for a ‘rethinking’ of system design and control. Integration of the dynamic interaction between the different components within the global system is crucial to ensure high system performance and thermal comfort in the building. This integration will push boundaries and knowledge past current leading-edge work.
The overall aim of the GEOTABS project is to improve system design and control of GEO-HP-TABS in office buildings by using monitoring, comfort survey and simulation data. Hereby, improved design is characterized by increased energy performance as well as increased convenience for future commissioning, while comfort is guaranteed. Monitoring data and simulation data constitute a huge source of information, which is not yet fully exploited to improve system design and control. Moreover, very little is known about users’ comfort experience in TABS buildings. Therefore, a generic international comfort survey tool will be developed and applied to TABS buildings. These data form, together with a current practice review, the ideal foundation in the development of scientifically sound guidelines for improved design and control.
Since the overall improvement of the design process and control strategy is based on an integrated system approach (including the development of innovative control strategies) and on different information flows (current practice, monitoring, comfort survey and simulation data), different actions will be carried out in parallel, structured in nine work packages. The resulting guidelines will constitute, together with a straightforward calculation tool, recommendations for commissioning, description of cases and comfort survey results, a new (REHVA) guidebook, which will be extremely valuable for all stakeholders: architects, building contractors, drillers, engineering offices, consultants, HVAC installers, HP, TABS and control companies, energy agencies, scientific researchers, teachers, students, users specifically dealing with sustainable buildings …