The bird protection vacuum insulating glass hybrid (BPVIG-H) is a technological innovation in the field of highly thermally insulating glass with an integrated bird protection function. It combines outstanding thermal insulation with measures to prevent bird collisions. The low U-value of 0.35 W/(m²K) ensures high energy efficiency, while the visible design of the glass surface minimises the risk of bird strikes.
The vacuum insulating glass (VIG) consists of two 5-mm thick, thermally toughened glass panes, separated by a vacuum gap of 0.1 mm. The pressure in the vacuum gap is less than 0.1 Pa, which allows virtually no heat conduction. The support spacing of 50 mm ensures the stability of the unit, while a low-E coating on the inner pane (position 5) reduces heat radiation.
The bird protection function is achieved by the reflective spacers manufactured by the SEEN Group. They are located in the vacuum gap between the panes and are therefore protected from the weather. These spacers, which have the same grid as the supports of the VIG, make the glass visible to birds and offer an optimum combination of functionality and the supposed aesthetic disadvantage of a VIG. An additional 4-mm thick outer pane of toughened float glass increases stability.
With a total thickness of 26 mm and a U-value of 0.35 W/(m²K), the BPVIG-H fulfils strict energy and environmental protection requirements and could become a key technology in facade construction in order to meet regulatory requirements.
