Representing around 40% of German final energy demand, buildings are a sector where a more rational and efficient energy use is absolutely necessary. Exergy analysis shows the thermodynamic efficiency of an energy system and is, therefore, expected to be a valuable tool for developing and designing more efficient energy supply systems in buildings. In this thesis results from exergy analysis are compared to conventional (primary) energy assessment and the different results and conclusions obtained from both methods are thoroughly studied and discussed. Dynamic exergy analyses have been performed on a large solar thermal system and a waste district heating system for space heating and domestic hot water supply. These systems are characterized by different shares of high exergy inputs in their supply, making thereby possible to infer the usability of exergy analysis for other building systems of similar characteristics.
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Representing around 40% of German final energy demand, buildings are a sector where a more rational and efficient energy use is absolutely necessary. Exergy analysis shows the thermodynamic efficiency of an energy system and is, therefore, expected to be a valuable tool for developing and designing more efficient energy supply systems in buildings. In this thesis results from exergy analysis are compared to conventional (primary) energy assessment and the different results and conclusions obtai...
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