Building integrated Photovoltaics (BiPV) - aspects thermiques

• Forschungsstelle: BFE
• Projektnummer: 103155

Schlüsselwörter (Deutsch)

TP0083;F-Gebäude

Kurzbeschreibung (Deutsch)

Building integrated Photovoltaics (BiPV) - aspects thermiques

Publikationen / Ergebnisse (Englisch)

PV industries offering products that can be integrated as building materials represent so far a niche but promising market. At the moment only a few studies (see the references in the annual report 2009) have been carried out to assess the interaction between the PV modules and the building itself. This fact may represent a barrier not only for the PV industry, but also for the building industry that has yet to gain confidence in these new materials. The building sector must therefore possess a basic knowledge in relation to what is technologically available and how to properly employ photovoltaic integration in a building. Considering that in the near future PV will be used more and more often as a building material, the intentions of this project are to: • Analyze building integrated PV products in order to define their electrical and thermal characteristics. • Analyze the interaction between these materials and the building. • Demonstrate what BiPV modules look like and how to integrate them into the building concept. The real working conditions of a building-integrated PV system are generally different from those reproduced in a common outdoor test facility. For example, photovoltaic insulated glass will exhibit different electrical and thermal behavior compared to PV modules analyzed with a common outdoor test facility where ventilation, temperature, heat flux and structure are different. Consequently the photovoltaic components for building integration require a special test facility. To test BiPV modules closer to the real situation, a special stand was built on the roof of our institute with the objective of, on the one hand, analyzing new prototypes or already existing, commercialized modules and, on the other hand, showing visitors what these new photovoltaic building elements really look like and which building components can be replaced with PV.

Auftragnehmer/Contractant/Contraente/Contractor:
Istituto di Sostenibilità Applicata all'Ambiente Costruito, SUPSI

Autorschaft/Auteurs/Autori/Authors:
Nagel,Kim
Zanetti,Isa
Fanni,Lorenzo

Zugehörige Dokumente

• BIPV TEMP | Building Integrated Photovoltaics Thermal Aspects - Annual Report 2009 [PDF] 418 kB
• BIPV TEMP | Building Integrated Photovoltaics Thermal Aspects - Annual Report 2010 [PDF] 927 kB

Schlussbericht (Englisch)

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.

Auftragnehmer/Contractant/Contraente/Contractor:
Istituto di Sostenibilità Applicata all'Ambiente Costruito, SUPSI

Autorschaft/Auteurs/Autori/Authors:
Chatzipanagi,Anatoli
Frontini,Francesco
Nagel,Kim

Zugehörige Dokumente

• Building Integrated Photovoltaics - Thermal Aspects | Low Energy House for Testing BIPV Systems - Final Report 2011 [PDF] 1'558 kB