.Annex60.BoundaryConditions.SolarIrradiation.Examples.DiffusePerez .Annex60.BoundaryConditions.SolarIrradiation.Examples.DiffusePerezThis model tests the implementation of Perez' model for diffuse solar radiation. The three instances of Perez' model compute the diffuse solar irradiation on a roof, a wall and a floor. Since the floor only sees the ground but not the radiative heat flow that is scattered in the atmosphere, it receives the lowest amount of diffuse solar irradiation.