Single fibre capture efficiencies of aerosol particles in real and model filters in the inertial-interceptive domain

Nguyen, Xuan Toan; Beeckmans, J. M.

doi:10.1016/0021-8502(75)90089-0

Cited by 16 publications

(3 citation statements)

References 6 publications

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“…Despite these and many other works on single fiber efficiencies in inertial flows (Householder and Goldschmidt 1969;Nguyen and Beeckmans 1975;Wessel and Righi 1988;Konstandopoulos et al 1993;Zhu et al 2000), fewer semiempirical studies exist that attempt to relate the total filter efficiency to single fiber efficiencies. The assumption of well-mixed flow for each successive layer of fibers becomes questionable outside the viscous regime.…”

Section: Introductionmentioning

confidence: 99%

Fibrous Filter Efficiency and Pressure Drop in the Viscous-Inertial Transition Flow Regime

Hubbard

Brockmann

Dellinger

et al. 2012

Aerosol Science and Technology

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Section: Introductionmentioning

confidence: 99%

Fibrous Filter Efficiency and Pressure Drop in the Viscous-Inertial Transition Flow Regime

Hubbard

Brockmann

Dellinger

et al. 2012

Aerosol Science and Technology

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“…(1981). Yoshioka N. et al, (1967aYoshioka N. et al, ( , c, 1969a, Nguyen X. and Beeckmans J.M. (1975), Emi H. et al (1973, 1977 calculated η IR for various Stk, R and Re, and compared their experimental efficiency in Fig.…”

Section: Single Fiber Collection Efficiency By Mechanical Effectmentioning

confidence: 99%

Fine Particle Filtration Technology Using Fiber as Dust Collection Medium

Kanaoka

2019

KONA

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Researches relating dust collector using fiber as particle collection body i.e., air filter, cartridge filter and nonwoven bag filter, were reviewed. Their filtration process was classified into 3 stages, i.e., Stage 1.inner filtration I, Stage 2.inner filtration II and Stage 3.surface filtration. Collection mechanisms of fresh circular fiber have been well understood and so-called classic filtration theory is applicable except single nano-particle, where discussion about the possibility of thermal rebound is necessary. In Stage 1, effects of shape of both fiber and particle, and filter structure, non-uniformity are the important issues. In Stages 2 and 3, filtration process becomes very complicated because of many affecting parameters. Main target in Stage 2 is to develop effective scheme to describe the phenomena and to find filter structure having a large holding capacity. Most important issue in Stage 3 is to develop the effective cleaning technique to minimize the dust emission based on rational but not empirical scheme.

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“…PREVIOUS WORK Nguyen and Beeckmans (1975) measured the penetration of monodisperse aerosols through stacks of fine mesh screens for conditions where impaction was the dominant capture mechanism. Using Eq.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Metal Oxide Whiskers Grown on Screens for Use as Aerosol Filtration Media

Brewer

Goren

1984

Aerosol Science and Technology

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Metal oxide whiskers grown on commercially available screens were evaluated as new filter media. The screens were woven from phosphor bronze wire of diameter D, , = 114 pm in a square mesh with fraction open area E = 0.303. Whiskers' diameters are remarkably uniform for the chosen growth conditions, averaging about 0.6 pm. Whisker lengths are much more variable, and whiskers over 20 pm long can be grown. Pressure drop Ap, and aerosol penetration P , through N identical screens in series were measured. N varied from 1 to 10. The aerosols were dioctylphthalate droplets of diameter Dp equal to 1.0, 2.0, or 4.6 pm. The face velocity U was varied from 0.15 to 5 m/s. Capture efficiency was expressed in terms of a single-wire capture efficiency q computed as follows: q = (1 -Pk/N)/(l -E ) . For a given screen, the single-wire efficiency was found to be an increasing function of both particle size and face velocity, suggesting that capture is dominated by impaction. For each screen, q was successfully correlated with a Stokes number S t k = p p~j~p~/ 1 8 p D , , , . However, the unoxidized screens also required accounting for the variation of the Reynolds number Re = pD,,+,,U/p. The influence of whiskers on q increases as the average whisker length increases or as Stk decreases, and iucreases for q of 10 to 50-fold, relative to uunxidized screens, have been measured. To compare the advantage of lower penetration with the disadvantage of higher pressure drop, a figure of merit Nq/Ap, was computed. For Dp = 1.0 pm, whiskers are advantageous relative to unoxidized screens over the entire range of velocity; for Dp= 2.0 pm, whiskers are advantageous for U < 2 m/s; and for Dp = 4.6 pm, whiskers are advantageous for U < 0.5 m/s.

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Single fibre capture efficiencies of aerosol particles in real and model filters in the inertial-interceptive domain

Cited by 16 publications

References 6 publications

Fibrous Filter Efficiency and Pressure Drop in the Viscous-Inertial Transition Flow Regime

Fibrous Filter Efficiency and Pressure Drop in the Viscous-Inertial Transition Flow Regime

Fine Particle Filtration Technology Using Fiber as Dust Collection Medium

Evaluation of Metal Oxide Whiskers Grown on Screens for Use as Aerosol Filtration Media

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