Energy concepts with high solar fraction for multi-family houses
Abstract
In most cases, the heat and power supply of buildings is still planned and realized separately, including the use of renewable energies like photovoltaic and solar thermal. By means of a simulation study, this approach is to be changed and holistic solar-based supply concepts for residential buildings are targeted and developed. As single family houses, multi-family houses offer potentials for the implementation of solar-based energy supply concepts, however they have to be evaluated in terms of the space requirements and the number of stories. Based on various solar energy systems and the boundary conditions from building and construction, energy supply concepts and design specifications for multi-family houses are derived. The results of a simulation study show, that for the building and the measures under investigation a total solar fraction of up to 70 % can be achieved. The most suitable area-ratio of solar thermal to photovoltaic is 20/80 to 50/50.