Newly built two family house with transparent in Freiburg

A new two-family house with transparent insulation was erected in Freiburg in 1988. The design of this building follows up different approaches to reduce the energy consumption of the building, so as to balance the different solar gains through the windows and the transparently insulated walls, maximum heat insulation of the not transparently insulated parts, decentralized auxiliary heating system and integrated storage collector for domestic water heating. In this paper the design of the building will be sketched with special regard to the transparently insulated facade and the integrated storage collector. First experiences show the feasibility of transparently insulated buildings.