Control of energy transmission through walls and windows

New flexible shading and isolation devices were developed to vary the transparency for solar radiation and heatflow through building facades in such a way, that optimal thermal comfort is obtained throughout the year at a maximum solar utilisation. By the use of these control devices passive solar energy gaining structures, such as windows and new transparent wall insulation facades, allow to cover a high portion of the heating demand by solar energy. At the same time surplus solar energy is reflected to prevent overheating during summer period. (ISE)