Hospital Sierning

In the course of a renewal of the ventilation system for physiotherapy, the existing supply air and exhaust air lines of this system were sealed from the new ventilation unit to the air outlets in the individual areas. The existing air ducts in the ascending shaft were already several decades old, although the air ducts in the floor were not renewed until 2010. for energy efficiency reasons, the two ventilation lines were completely sealed.

PROJECT

Building: Hospital Sierning
City: Linz, Austria
Date: December 2019
AEROSEAL Partner: Aeroseal Austria
Executing company: Ing. August Lengauer GmbH & Co. KG
Target: Achievement of a tightness class „C“, so that the air volume reaches the extraction poit.
Preseal leakage: 397,5 l/s @ 300 Pa
Postseal leakage: 9,2 l/s @ 300 Pa
Reduction of leakage: 97,70 %

PROJECT COURSE

The two ventilation ducts were closed directly at the ventilation unit connection by metal plates. On the treatment floor all ventilation grilles were removed and covered with foam plates. The sealing unit was connected in the central ventilation system. The work on the ventilation grilles could already take place during the day. The waterproofing was only started after the treatments at 15.30 and completed at 19.00. Afterwards the ventilation grilles were installed again and the metal sheets were removed. We left the plant at 9.30 pm - the client can now enjoy an air network with tightness class „D“. Up to now, the operator has blown about l500 m3/h senselessly around the area, as the existing duct network does not even meet the requirements of tightness class „A“ by far.

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