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Building Integrated Photovoltaics - Thermal Aspects

Acronimo BiPV Temp

Abstract PV industries offering products that can be integrated as building materials (BiPV product) represent so far a niche but a promising market. In Switzerland, according to a study of the International Energy Agency (IEA), the potential of PV installed in well-oriented roofs and facades in Switzerland represents 35% of the annual electricity demand. At the moment, only a few studies have been carried out in order to assess the interaction between the fastening systems or the building component and the PV modules. This fact may represent a barrier for the PV industry but also for the building industry, which has yet to gain confidence in these new materials. This project analyzed these innovating products. In order to define their electrical and thermal characteristics a Building integrated PV (BiPV) test stand was built at SUSPI-ISAAC and 22 modules were monitored for one year and the thermal characteristics (U-value and gvalue) were measured at the EMPA laboratory. In this Final report the main results are presented. It was found that the performance of BiPV modules is influenced by the combination of the: - type of integration, - inclination, - temperature coefficients of the modules and annealing effects. The thermal characteristics of the modules exhibited satisfactory values and can be used in building construction in order to achieve the Minergie standard. However, in addition to the aspects above, also the lifetime and long-term degradation of the modules, aesthetics and cost must be taken into consideration.

Enti SUPSI coinvolti Settore sistema edificio

Persone coinvolte Kim Bernasconi-Nagel , Sebastian Dittmann, Anatoli Chatzipanagi

Responsabili Francesco Frontini

Data di inizio progetto 1 luglio 2009

Data di chiusura progetto 1 ottobre 2011