Share

Fast estimation of leakage area in a multizone test facility.

Number: pap. 3496

Author(s) : MENG L., NAWAZ K., HE J., et al.

Summary

The effects of building leakage on heat and mass transfer in buildings are difficult to model due to the difficulty in knowing crack size, shape, position, and number. Nevertheless, interest remains high in the estimation of crack areas in buildings because of the important effects cracks have on infiltration, indoor air quality, building energy performance, and because of interest in exploring mitigation/ventilation strategies. The authors show how a steady-state model is developed that can provide fast estimation of the crack areas for a test facility. The facility is then modeled in CONTAM to perform simulations and make prediction of overpressure values using the set of estimated crack areas determined from the above model. Comparisons are made between the CONTAM model predictions and experimental results in terms of overpressure, and good agreement is achieved. The experimental overpressure ranges from 3 to 155 Pa, covering the normal range of overpressure in commercial and residential buildings. The method outlined in the present work can be extended to estimate crack areas of the openings in multizone pressurization tests. Further, this method holds promise in filling the knowledge gap of interzonal leakage in multizone buildings.

Available documents

Format PDF

Pages: 9 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Fast estimation of leakage area in a multizone test facility.
  • Record ID : 30006816
  • Languages: English
  • Source: 2012 Purdue Conferences. 2nd International High Performance Buildings Conference at Purdue.
  • Publication date: 2012/07/16

Links


See other articles from the proceedings (42)
See the conference proceedings

Indexing