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New approach for building airtightness measurement.

Number: pap. 331

Author(s) : IORDACHE V., CATALINA T., IORDACHE F.

Summary

The classic approaches to estimate the leakage airflow for an existing building present a series of disadvantages: the mathematical prediction models present errors up to 150%, while the currently used experimental measuring approach is expensive and weather dependent. This research is centered upon an alternative approach: an acoustic approach for building air permeability measurement. In order to analyze if there is any correlation between the air and noise transfer phenomena through window joints, we measured both the infiltration airflow transfer and the airborne noise transfer for the same building façade. Different joinery degradation cases were simulated by different fixed positions of the joinery. We found that the air change rate is inversely correlated to the sound transmission loss; the higher the sound transmission loss, the smaller the air infiltration rate. This acoustic estimation for the building air permeability presents multiple advantages compared to the two classic approaches: good precision because it is an experimental approach, economical measurement devices, free of climate changes and it also represents a fast tool for evaluating building permeability.

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Pages: 8 p.

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Details

  • Original title: New approach for building airtightness measurement.
  • Record ID : 30008876
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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