Klimaschutz durch Reduzierung des Energiebedarfs für Gebäudekühlung. Climate protection by reducing cooling demands in buildings.

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The aim of this study is to investigate and evaluate suitable measures for the reduction or abatement of final energy needs for cooling in buildings in an economical and ecological way. Basis is the evaluation of current energy needs for cooling in buildings for Germany. A comprehensive overview is given on conventional technologies for cooling of buildings. Final energy needs are dynamically simulated for a selection of reference buildings (residential and non-residential), based on different climate scenarios (Frankfurt and Hamburg, standard and extreme climate conditions). Results of the simulations are cooling energy demand and final energy demand, which are input data for a comprehensive economical and environmental analysis. Alternative technologies for abating or reducing the energy are described such as solar shading systems and energy renewables. Technical and realistic final energy reduction potential of the alternative technologies for Germany up to 2030 is quantified. This is done following the approach of projecting the energy demands for cooling along the building inventory for residential and non-residential buildings in Germany, taking the simulations from this study as well as other relevant studies into account. The influence of cooling in buildings on energy demand is studied. Barriers in the reduction of energy demand are described and possible actions are discussed along with the types of policy instruments and consumer information.
An English summary of the study results is presented in this report.