Bachelor's thesis Timo Wenzel


Analysis of energy saving potentials of institute buildings using the example of a plant research center in Jülich

Energy-intensive lighting Energy-intensive lighting in a greenhouse

In times of energy revolution, a sustainable energy use and supply of buildings is getting more and more important. In this context energy saving potentials should be analyzed using the example of a plant research center in Jülich. On the one hand concrete measures are formulated to reduce the institutes’ primary energy consumption. On the other hand, the potential of a decentralized supply is considered. In form of Sankey-graphs the research centers energy flow is itemized to identify possible energy saving potentials. Therefor the existing measuring instruments at the institute are used. Installations which showa high energy consumption are investigated concerning a technical improvement. Especially the electrical energy consumption is high and there shows improving potential. In this context an inefficient flow-ice machine, an oversized compressor and inefficient lighting are mentioned. Further analysis of the given possible improvements shows a reduction of primary energy consumption and a reduction of annual costs of energy. The potential of decentralized supply of certain buildings are analyzed with an analytical model based on the simpson diversity index which shows the concurrency of several categories. Values of electrical, heat and cold consumption are evaluated in this context. For buildings which show potential for decentralized supply, because of annual high coincident consumption of the mentioned mediums, a possible installation is both technical and economically calculated. On closer consideration of these installations an increasing primary energy consumption is identified. Therefore, a decentralized supply shouldn’t be built from energy-related points of view, although the annual costs of energy would be decrease.