Numerous factors contribute towards the concept and planning of administrative buildings. Design, functional and economic aspects interact with energy and room climate factors. This IGSSE-project aims at developing a holistic planning strategy for architects and engineers for the construction of commercial buildings under different climatic conditions. In particular, these planning aids are intended for the application at early conceptual development stages and shall form a decision basis for the further planning process. In the absence of detailed planning data tools are essential that act as a guideline for predicting the indoor climate and the energy efficiency of a building by pointing out influences and inter-relationships between individual design variables.
One core aim of this project is to combine the experience and expertise of architects in building design and user requirements and engineers in technical aspects, modeling and simulation. Therefore the research group for this IGSSE project consists of architects and engineers.
In the context of this project, the facade plays a key role in these considerations, since the window area, solar protection measures and the choice of materials exert a significant influence on the room climate. The interactions between the ambient climate, site specific conditions, the energy concept and the room climate shall become visible in the sense of a case-dependent sensitivity analysis. The available technical solutions for reducing the energy consumption and for using renewable energy need to be closely aligned with the application profile.
There are various technical solutions available for reducing energy consumption (e.g. thermal insulation, condensing boilers, combined cooling, heating and power (CCHP), energy management systems in buildings) and for using renewable energy (e.g. solar thermal technology, photovoltaic, ground source heat pumps (GSHP)). These need to be closely aligned to the application profile. It is particularly important to achieve a holistic cost and energy balance for the entire life cycle, i.e. including the energy required for the construction and maintenance of the plant.
When it comes to calculation and simulation techniques to be employed during the project, multi-scale/multi-level problems have to be taken into account. Besides stationary balancing and zonal dynamic simulation methods, processes involving numerical fluid mechanics and models for analyzing human comfort criteria are also used for the holistic assessment of utilization and energy concepts. Heating and cooling plant component models are being developed to enable sizing as a result of optimization. In addition, computer science supplies the methods and data structures required for the parameter studies and for coupling to numerical simulation processes.