1 Thermal and electrical characterization of a semi-2 transparent dye sensitized photovoltaic module 3 under real operating conditions 4

Dye sensitized solar cell technology is having an important role in renewable energy 16 research due to its features and low cost manufacturing processes. Devices based on this technology 17 appear very well suited for integration into glazing systems due to their characteristics of 18 transparency, color tuning and manufacturing directly on glass substrates. Field data of thermal 19 and electrical characteristics of dye sensitized solar modules (DSM) are important since they can be 20 used as input of building simulation models for the evaluation of their energy saving potential when 21 integrated into buildings. However still few works in the literature provide this information. The 22 study here presented wants to contribute to fill this gap providing a thermal and electrical 23 characterization of a DSM in real operating conditions using a method developed in house. This 24 method uses experimental data coming from test boxes exposed outdoor and dynamic simulation 25 to provide thermal transmittance and solar heat gain coefficient (SHGC) of a DSM prototype. The 26 device exhibits an U-value of 3.6 W/m2K, confirmed by an additional measurement carried on in the 27 lab using a heat flux meter, and a SHGC of 0.2, value compliant with literature results. Electrical 28 characterization evidences an increase of module power with respect to temperature causing DSM 29 suitable for integration in building facades. 30

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