The same architects had already designed the existing airport buildings, which opened in 1998. The new terminal extends the airport northwards to form a T-shape whereas the new entrance hall (located west of the existing one) connects directly to the underground train station. Large glulam trusses arranged in pairs support the roofs of the new entrance hall and the tubular pier. To reduce their energy demand by 50 % compared to the existing ones, the new parts of the building meet the Passive House requirements. Their heated volumes are minimized, the roofs highly insulated and the building envelope meets stringent requirements in terms of airtightness. The embodied CO2 in the building materials is 35 % lower than in a standard construction. This was achieved by using fly ash as a cement replacement, increasing the recycled content in the steel elements and specifying grey oak cladding for the roof of the terminal. Heating is supplied via the airport’s district heating network from 18 geothermal wells, a CHP unit as well as the sewer of a nearby housing area. To cool the buildings, snow is stored in a 8000-m2 depot between the runways in winter, covered with sawdust for insulation and the cold meltwater used as a heat sink in summer.






