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> Research >> Competencies >> Collectors and PVT

Competencies in Solar Technology & Energy Systems

The SPF has been a driving force in research and development of innovative energy technologies for more than 30 years. And we offer you our support and competence as a partner, for example within the area of:

Collectors and PVT

Our research related to solar thermal collectors currently focuses on solutions for overheating protection, the use of new materials in collector design, cost reduction,
and building integration. Besides pure thermal collectors, we work on the optimization
and the new development of concepts for combined photovoltaic-thermal (PVT) collectors.

The most important tools and methods include: Steady-state solar simulator, outdoor collector test rigs, numerical modelling of optics, heat transport, and fluid dynamics problems, as well as dynamical simulations of complete solar heat and electricity systems. (see our Services)
Selected publications:

  • PVT Wrap-Up: Energiesysteme mit Photovoltaisch-Thermischen Solarkollektoren (EnergieSchweiz; German)
  • Thermische und elektrische Charakterisierung von unabgedeckten PVT-Kollektoren
    (OTTI 2015; German)
  • PVT-Kollektoren für die Brauchwarmwasser-Vorwärmung ‒
    Mess- und Simulationsresultate einer Testanlage (Brenet 2014; German)


Dr. Daniel Zenhäusern

Tel. +41 (0)55 222 4142




Dipl. Phys. Stefan Brunold

Tel. +41 (0)55 222 4810


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