[ Function ]

The rays of the high summer sun are partly reflected by the tiny prisms on the surface of the solar glass. On the other hand they shine on the lowed lamellas. The big part of the absorber is shaded because in summer the rays can only hit upon the tips of the lamellas.

The produced heat on these tips raises a movement in the cavity between absorber and glass. Like that hot air can be forced towards outside by natural thermal.

All these effects prevent an overheating of the façade and the building.