Decentralized ventilation system versus (the lack of) building airtightness

Purpose of the work

By way of practical examples, the presentation shows that decentralized ventilation systems do neither make airtightness measurements more difficult nor distort them, and despite the requirements for a high level of airtightness for buildings also ensure good indoor air quality.

Method of approach

During the construction of a building, decentralized ventilation systems were installed. The presentation shows the preparation of the building with sealing bladders by InVENTer and analyses a series of pressure differential measurements. The effectiveness of the ventilation system is documented wit CO2 measurements of the rooms with the decentralized ventilation system turned on and off.

Results and assessment of their significance

The analysis of the measuring values shows the following:

• The guidelines of EnEV (German Energy Savings Regulation) and KfW (German Reconstruction Loan Corporation) are observed.
• Decentralized home ventilation with thermal recovery is a viable option.

Note

For more information, please contact the reference author at: e.schuetze@inventer.de