Chair of Building Systems Engineering
The main focus of energy applications in the disciplines of building science/physics and building technology/service is to provide a planning base with the goal to keep the loads for heating and cooling as low as possible. At the initial stage, this has to be accomplished with the help of constructional methods, followed by the use of energy applications with active energy supply. These active energy supply systems are based on the strategies of regenerative energy forms. The scientific and teaching activities of the chair have been designed in view of the abovementioned focus areas.
As examples of the work areas can be mentioned:
- Wintrily heat protection
- Summerly heat protection
- Moisture protection
- Multi-level energy supply technology for office and social buildings
- Use of terrestrial heat for the air supply of buildings
- Use of terrestrial heat for the heating and cooling supply of buildings
- Energy management, especially operation of multi-level energy supply technology
- Mathematical models for air flows and heat distribution
These and other energy related topics are an essential part of the lectures for architects, civil engineers, which lead to a graduation degree of Dipl.-Ing., Bachelor, and Master of Science in the faculty of architecture, civil engineering and urban planning.
According to the Brandenburg Regulation for Building Specialists lectures for the discipline “energetic building planning” are also offered for further education. Their completion is required for the acceptance as a building expert in energy efficiency. Therefore, BTU was authorized by the state government of Brandenburg to issue an expert opinion.
Currently, research work is focused on the following:
Monitoring of the energy supply of the IKMZ, BTU Cottbus
The energy supply of the IKMZ (Fig. 1), consisting of traditional technology with the energy carrier gas and of regenerative energy sources with terrestrial energy, has to be evaluated regarding its energy efficiency and thermal comfort in different zones. Therefore, extensive stationary and mobile measurement techniques were installed. The measurements are implemented as a complex research topic in the program “SolarBau” of the Federal Ministry of Economics
Monitoring of the earth-heat-exchanger of the Federal Environmental Agency (FEA), Dessau
For the supply of fresh air one of the largest earth-heat-exchangers was erected at the Federal Environmental Agency (Fig. 2). This earth-heat-exchanger is used for the pre-conditioning of the external air flow (cooling during summertime and heating in winter) in the offices of the FEA. The efficiency and the operating performance of the earth-heat-exchanger are the main subject of the research project. Furthermore, questions of hygiene and economic efficiency of such large installations are investigated. Measurements include the examination of volume flows and energy transport mechanisms as well as study of ground water areas through light wave conductors.
Large-scale canopies
Large-scale canopies for residential buildings and places of employment will get more and more important for the development of small-section building structures. The main positive effect is a possibility to use the external area in part for work and recreation. The main focus of the research is a result of the requirements for the energy balance under these constructions and the flow-technical requirements under large-scale envelope structures. Therefore, calculations have to be developed, as well as found solutions for technical details such as thermal quality of the envelope structure. Regarding these problems, preliminary studies available at the moment, will be used for the research petition.
Additionally, there are several smaller projects, which will be done for industrial partners and will be accomplished in a short period:
- Documentation for building technical analysis with regard to the preparation of energy demand documents for the Oder/Spree county.
- Redevelopment of residential buildings with focus on ventilation (retirement living) on behalf of and with the bureau of Dr. Othmer, Potsdam.
- Comparative investigations of the permeability of underlay systems by order of DuPont.
- Investigations of the surface structure of building elements for the convective heat transfer by order of Dörken.
