b04 - Construction design SL02

Introduction The present guideline seeks to describe the general installation procedure of the BIPV skylight structure designed for the Zamudio (Spain) demo site in the frame of BFIRST project. Nevertheless, the components, materials and their installation process may vary in different wall structures and therefore, the information provided in this document should be handled with care, adjusting the installation with regard to the existing roof composition in each case. The aim of this guideline is not focused on the installation process of the BIPV modules, but the construction process of the substructure needed to install them. The SL02 system can be installed it two ways: mechanically fixed to the roof structure, or on the conventional skylight’s fastening.

  1. It can be installed together with a conventional double glass skylight with adjustable ventilation grilles in the extremes while the outside PV skylight would have opening possibility to enable the natural ventilation of the interior trough the grilles of the conventional skylight. Thus, the double skylight system would assume reactive energy functionality, shading and ventilating by means of the coordinated opening and closing of the PV skylight and grilles, in order to achieve the maximum PV production and the optimal indoor climatic conditions. PV skylight might be positioned with different inclinations by means mobile devices that adjusted the position of the modules in function of one-axis solar tracking or air ventilation and shading criteria.
  2. It can be installed together with a closed conventional double glass skylight. The outside PV skylight would be a fixed structure, with the modules orientated with the optimal inclination. It would provide electricity and shading, but ventilation possibility of the building would not be possible.

The PV modules specifically designed for the system are 1518x1228x50 mm (height, width, length) and are based on composite material with an aluminium frame. Total weight of the full module (module+frame) is 14.1 kg. An structural stretcher supports the module and it is use for its connection to main structural system. On the other hand, the use of specifically design structural profiles has been avoided in order to get a more commercial system. In this sense, rectangular shape standard aluminium profiles have been selected for the system.  

 

Set-up of BIPV units Installation of second option integration (on close conventional skylight) is described by following sketches. SL01 CAD

Mounting of vertical profiles by mechanical anchoring to previous skylight structure.

SL01 details 2

Mechanical anchoring of horizontal profile for stretcher support and to hide the wires.

SL01 details 1

Tilt the PV unit in the appropriated direction according with latitude.

To fix the PV unit by mechanical anchoring in 4 points: the 2 upper points fixed to the horizontal profile of the stretcher and the 2 lower points fixed to the vertical legs of the stretcher.

Carry out the electrical connection of the modules and the hiding of the wires into the cable conduit attached to the mounting structure. SL01 CAD front