Investigation of aerosol dispersion in fibrous filters

• Authors: Anna Jackiewicz , Anna Bałazy , Albert Podgórski
• Languages of publication: EN

Abstracts

EN

Fractional penetration through four fibrous filters was determined experimentally at various air velocities. To describe the data obtained for multilayer sets of filters composed of up to nine layers of the same filter, the axial dispersion model was applied. This model predicts a non-exponential decrease of aerosol penetration with a filter thickness increase. The dispersion model contains two parameters, λ and Dx, which were evaluated on the basis of the experimental data. For the first time ever the axial dispersion coefficients, Dx, in fibrous filters were determined.

Keywords

EN

aerosol dispersion; fibrous filters; filtration

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2008
• Volume: 10
• Issue: 1
• Pages: 66-72

Dates

published

1 - 1 - 2008

online

3 - 4 - 2008

Contributors

author

Anna Jackiewicz

• Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warszawa, Poland

author

Anna Bałazy

• Cummins Filtration, Inc., 1801 U. S. Hwy. 51/138, Stoughton, WI 53589-0428, USA

author

Albert Podgórski

• Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warszawa, Poland

References

• Podgórski, A. (2002). On the Transport, Deposition and Filtration of Aerosol Particles in Fibrous Filters: Selected Problems. Warsaw, Poland: Publishing House of the Warsaw University of Technology.
• Buyuktas, D., Wallender W. W. (2004). Dispersion in spatially periodic porous media. Heat and Mass Transfer. 40, 261-270.
• Lee, C. K., Sun, C. & Mei, C. (1996). Computation of permeability and dispersivities of solute or heat in periodic porous media. Int. J. Heat Mass Transfer. 39(4), 661 - 676.
• Koch, D. L., Cox, R. G., Brenner, H. & Brady, J. F. (1989). The effect of order on dispersion in porous media. J. Fluid Mech. 200, 173 - 188.
• Podgórski, A. (1999). Selected Problems in the Modelling of Aerosol Filtration in Fibrous Filters. In: Electret Filters, Production and Properties (Stenhouse, J. I.T., Gradoń, L. & Marijnissen, J. C.M., Eds.). Delft University Press, Delft. 95 - 106.
• Bałazy, A. (2006). Aerosol Filtration in Fibrous Filters: Submicrometer and Nano-Sized Particles, Bioaerosols and Fractal-Like Aggregates. Doctoral dissertation, Warsaw University of Technology, Poland.
• Koch, D. L. & Brady, J. F. (1986). The Effective Diffusivity of Fibrous Media, AIChE J. 32(4), 575 - 591.[Crossref]

Identifiers

DOI

10.2478/v10026-008-0016-4