4. 1 PV Module Design, Manufacture, Performance and Reliability
Simulation, Building Integrated Photovoltaic (BIPV), Thermal Performance
Summary / Abstract:
Solar integration in the building envelope still represents a niche market, despite legal requirements and regulation, e.g. nearly zero-energy buildings (NZEB), which, in addition to a high overall energy efficiency, requires alternative energy generation in or near the building. A recent study entitles that building facades offering a so far untapped potential for the integration of photovoltaics. This results in great potential for building-integrated photovoltaics (BIPV), where high-quality design solutions integrated into facades and building components will be increasingly in demand. In the project SOLARcon, exposed concrete facade elements are designed and build in which small PV modules are integrated. Due to the special design and the connection between the concrete element and the PV module, new questions arise in regard to mechanical stresses and temperature interactions on both the concrete building unit and the PV module compared to conventional PV modules with aluminium frames. Within this paper, first results of finite element analysis (FEA) are presented. We investigated how temperature distribution between photovoltaic module and the surrounding concrete facade element takes place and how resulting thermally induced mechanical stresses influence the service life of the photovoltaics.