Hybrid Photovoltaic-thermal Systems in Buildings – A Review

This paper presents a review of projects where hybrid photovoltaic-thermal (PV/T) systems are used in buildings. PV/T systems convert solar radiation to electricity and heat simultaneously, in one module. The output of both electricity and heat suggests that the technology can be suited for use in buildings, especially when the available area for installation is limited. The market and research activities related to PV/T technology has increased in recent years. This article adds to existing reviews on PV/T technology by focusing on the building perspective. Different strategies for the use of PV/T in buildings are discussed, and examples of building projects are presented. An attempt is also made to assess to suitability of different PV/T technologies for use in buildings. Finally, the regional variations in market and applications are discussed.