Spott im Internet: Warum der Bahnhof von Stuttgart 21 keine Klimaanlage bekommt

A video released by Deutsche Bahn (DB) on the internet has sparked discussion and criticism over the decision not to include air conditioning in the new Stuttgart 21 underground station. The DB explained that the station is situated deep underground and its design ensures a constant temperature year-round, eliminating the need for additional cooling.

René Krull, a technical project manager at Stuttgart 21, detailed the reasoning behind the station's design in the video. The underground location means the building takes on the temperature of the ground, while its massive construction and embedding in the earth help maintain stable temperatures. Moreover, the station sits at the lowest point of Stuttgart's Talkessel, causing air flowing into it to cool down and descend, further regulating temperatures throughout the year. Wind generated by moving trains also aids in air exchange between the tunnel and the station.

However, skeptics questioned the DB's explanations, pointing out the potential heat generated by the electric trains and the existing S-Bahn station's overheating issues in summer. Some users compared the situation to the London Underground, where they observed similar temperature challenges. A DB spokesperson attempted to clarify the difference by explaining the length of the connecting tunnels, which range from three to nine kilometers and are up to 220 meters underground.

In contrast, Stuttgart 21's neighboring S-Bahn station is located only a few dozen meters from the tunnel entrance, benefiting from cooler air passing through the adjoining tunnels.