Abstract
The main goal of the paper was to numerically analyse the risk of overheating of the Energy Activated External Thermal Insulation Composite System (En-ActivETICS) as an example of Building Integrated Photovoltaics (BIPV). The analyses were conducted with the coupled power flow method (thermal and electrical) for 20 European cities. All locations were analysed considering the local climate in the context of building performance simulation as well as electricity production. The obtained results allowed for the determination of the risk of overheating, which can influence system durability, accelerated thermal ageing, and overall performance. It was revealed that the risk of overheating above 80 °C is possible in almost all locations; however, the intensity considerably differs between southern and northern Europe. The effect of latent heat storage for better thermal stabilization and overall performance was determined numerically for all locations. Finally, the improved solution with a phase change material (PCM) layer beside the PV panel was proposed individually for specific climatic zones, considering the required heat capacity. The maximum panel temperature for improved En-ActivETICS does not exceed 85 °C for any location.
Highlights
Today, a Building Integrated Photovoltaic (BIPV) installation, mounted on roofs and facades, can be considered as one of the most justified on-site renewable electricity generation technologies
Discussion to be stored in the phase change material (PCM) layer: The first step the PCM layer was calculation of the amount solar energy
It was assumed that of part the solar energy incident
Summary
A Building Integrated Photovoltaic (BIPV) installation, mounted on roofs and facades, can be considered as one of the most justified on-site renewable electricity generation technologies. Most of the currently used BIPV facade systems are an alteration of various rain screen cladding façades [2], curtain walls [3], spandrel panels [4] or shading systems [5]. Such systems are applied mainly in non-residential and public buildings, playing a representative role. The newly developed PV system integrated with a wall [10] as described and analysed in this article can be considered as a technology for future use in the residential sector, facing the challenges mentioned above
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