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Modeling entry of micron-sized and submicron-sized particles into the indoor environment

Jeng, C. J., Kindzierski, W. B. and Smith, D. W.
2003
Aerosol Science & Technology, 37(10):753 - 769


Jeng, C. J., Kindzierski, W. B. and Smith, D. W., (2003), "Modeling entry of micron-sized and submicron-sized particles into the indoor environment", Aerosol Science & Technology, 37(10):753 - 769.
Abstract:
Aerosol Science & Technology

Publisher: Taylor & Francis

Issue: Volume 37, Number 10 / October 2003

Pages:

URL: Linking Options

Modeling Entry of Micron-Sized and Submicron-Sized Particles into the Indoor Environment

Chwen Jyh Jeng, Warren B. Kindzierski, Daniel W. Smith

A1 Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada

Abstract:

A theoretical approach, based on particle dynamics, was used to examine the outdoor-to-indoor penetration coefficient (P) of fine particles inside thin rectangular cracks. Parallel-plate flow theory indicates that crack infiltration flow can be assumed laminar for long, thin rectangular cracks. Considering laminar crack flow, three particle penetration models were used to estimate P. They are the Licht model, the Fuchs model, and the Taulbee model. The first two models consider gravitational sedimentation as the particle deposition mechanism, while the third model considers particle deposition induced from both gravitational sedimentation and Brownian diffusion. Modeling results indicate that gravitational sedimentation governs particle deposition behavior for micron-sized particles, and that all three models can be used to model penetration for these particles. For submicron-sized particles, Brownian diffusion becomes the major deposition mechanism, and only the Taulbee model is suitable to model particle penetration. The Taulbee model was validated using published experimental results of other researchers. Model validation indicated that the Taulbee model satisfactorily estimates particle penetration for micron-sized and submicron-sized particles. Application of the three models to actual building penetration is discussed.


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Author Information and Other Publications Notes
Jeng, C. J.
Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
     
Kindzierski, W. B.
Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
     
Smith, D. W.
Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
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