Johannes Kepler University

Performing a general retrofit of the ventilation system in the TNF tower of Johannes Kepler University the existing supply risers should be upgraded to a state-of-the-art air tightness using AEROSEAL® technology.

PROJECT

Building: Johannes Kepler University
City: Linz, Austria
Date: 2017
AEROSEAL Partner: Aeroseal Austria GmbH
Preseal leakage: 1227 l/s at 300 Pa
Postseal leakage: 90 l/s at 300 Pa
Reduction of leakage: 92,6%

PROJECT COURSE

The existing supply risers have been sealed using AEROSEAL®, overall target has been an increase of the air volume as well as a reduction of noise emissions. The systems are operated non-stop. All branches of the main shafts (risers) on all floor levels have been segregated and closed. Due to ongoing refurbishment works in the building that could be done without any problem. In the technical HVAC room the AEROSEAL® equipment has been connected directly onto the fire dampers. After the successful sealing refurbishment with AEROSEAL® the riser could tested to a minimum of leakage class C, coming from A. To demonstrate to the building owner the possible performance of the system, a lot of the risers have been sealed down to class D (all mentioned leakage classes acc. (EN1507). As a result of the sealing process there will be a future saving of leakages of about 4.000 m³/h, which would have been wasted otherwise 365 days a year by 24 h a day.

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