Secondary School, Diedorf – German Architecture Prize for New Construction

A secondary school with modern, open learning landscapes, timber construction, and plus-energy-standard – the specifications for the new building in Diedorf near Augsburg in Bavaria were very ambitious. In 2017, the architecture was awarded the German Architecture Prize. But the demands on its efficiency were also enormous, which became evident in the selection of building materials. Materials needed to comply with the strictest ecological building requirements, while more than 500 products were thoroughly tested before installation. The results of extensive monitoring were summarized in a study in 2019 and confirmed the success of the measures.
A total of 13 AHUs by robatherm are in operation at the Diedorf secondary school. The AHUs were connected to two large central systems via separate casings. The AHUs are designed for an air rate of 28.5 m³ per hour and person. The air volume is controlled room by room via CO2 sensors.
Through adiabatic evaporative cooling in the exhaust air, the robatherm AHUs achieve a cooling effect of 5K. Just under 10 % of the total power consumption is required for ventilation. Electricity generated by the photovoltaic system on the roofs of the Diedorf secondary school exceeds the primary energy requirement of the entire school. Thus, the Schmuttertal Secondary School can call itself a PlusEnergy-School, one of the first of its kind in Germany.