To apply the above methodology, numerical and experimental tools are needed. In our case, they have been totally developed and dedicated to the present study and constitute an original contribution to international studies about complex walls, especially including PV systems. Many publications have involved these tools, for example (Miranville, 2003) and (Bigot, 2009).
The numerical code used to predict the thermal response of the whole building envelope is part of the thermo-hygro-aeraulic simulation codes and is based on a multizone description of the physical system (here composed of the building and its very specific wall with PV). Specifics developments have been done to allow the correct modelling of the system, with a very special focus on radiative exchanges in semi-transparent layers. The corresponding model is described further and constitutes the main addition to the building simulation code that is necessary for predicting the temperature field.
In terms of experimental equipment, a dedicated platform has been set up, build in field environment, constituting a unique case for the French overseas departments. It is composed of several test cells, as it will be described further, allowing the collection of experimental databases, needed for comparisons with code predictions. Combining the two tools give a powerful mean to analyse the adequacy between models and measurements and thus go further in the knowledge about building physics.