Solar Integrated Roof: Electrical and Thermal Production for a Building Renovation

Solar renovation of a training Centre at Casargo, Lecco, Italy was financed in 2006 by Lombardy Region in collaboration with Politecnico di Milano. The refurbishment programme interested the technical unit of the building and reduced thermal demand. The technology used for the roof refurbishment is an innovative system called TIS (Tetto Integrale Solarizzato); which means solar integrated roof and developed by the Italian company Seccosistemi under a research collaboration with Politecnico di Milano. TIS is a modular covering system with the option to insert the various types of solar energy modules, providing most suitable dimension and configuration for a specific application. The prototype of TIS system was studied by R&D programme carried out at the Politecnico di Milano aimed at the creation of a practical and flexible system, easy to install and maintain, that would allow the co-presence of hybrid photovoltaic thermal panels, air or water thermal collectors and non-energetic closure elements, in such a way as to be used the whole shell and not only those parts affected by solar installation. building surfaces are described. Based on the geometry of shading system, the optimal values of inclination of the profiles can be calculated. Finally, due to the technical limitations of the systems, the feasible configuration has been determined corresponding to an angle close to the optimal values of inclination for ensuring appropriate shading. This test system allows the definition of the movement of dynamic solar shading systems based on a specific location and geometrical/mechanical characteristics of a certain technical solution.