Rotating solar panel for wall opening - has water-filled core with three separate faces

摘要

The solar panel (1) consists of a vertical water-filled heat accumulator (5) having a triangular cross section. The panel can be rotated about its vertical axis to put any of the three faces across the opening in the wall (3). One face (6) of the panel is an absorber whilst the other face (7) is an insulating panel. The third face (8) allows the heat stored in the water to be dissipated gradually into the room. The panel is positioned according to the time of day and season.