Collection efficiency of a woven filter made of multifiber yarn: Experimental characterization during loading and clean filter modeling based on a two-tier single fiber approach

Benesse, Marc; Coq, Laurence Le; Solliec, Camille

doi:10.1016/j.jaerosci.2005.10.003

Cited by 22 publications

(15 citation statements)

References 29 publications

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“…However the weave pattern is very different for both material types, as confirmed using SEM imagery (figure 5). The polyester material has a very uniform and tight weave pattern (which, as an aside, is found to be very similar to the weave pattern for membrane collection filters, described by Bénesse et al, 2006) while the fleece is more irregular and loose. Although the majority of deposited particles reside in a monolayer on the surface layer of…”

Section: Resuspension With Varied Contaminated Clothing Materials Typesupporting

confidence: 51%

The influence of human physical activity and contaminated clothing type on particle resuspension

McDonagh

Byrne

2014

Journal of Environmental Radioactivity

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A study was conducted to experimentally quantify the influence of three variables on the level of resuspension of hazardous aerosol particles from clothing. Variables investigated include physical activity level (two levels, low and high), surface type (four different clothing material types), and time i.e. the rate at which particles resuspend. A mixture of three monodisperse tracer-labelled powders, with median diameters of 3, 5, and 10 microns, was used to "contaminate" the samples, and the resuspended particles were analysed in real-time using an Aerodynamic Particle Sizer (APS), and also by Neutron Activation Analysis (NAA).The overall finding was that physical activity resulted in up to 67 % of the contamination deposited on clothing being resuspended back into the air. A detailed examination of the influence of physical activity level on resuspension, from NAA, revealed that the average resuspended fraction (RF) of particles at low physical activity was 28 ± 8 %, and at high physical activity was 30 ±7 %, while the APS data revealed a tenfold increase in the cumulative mass of airborne particles during high physical activity in comparison to that during low physical activity. The results also suggest that it is not the contaminated clothing's fibre type which influences particle resuspension, but the material's weave pattern (and hence the material's surface texture). Investigation of the time variation in resuspended particle concentrations indicated that the data were separable into two distinct regimes: the first (occurring within the first 1.5 minutes) having a high, positive rate of change of airborne particle concentration relative to the second regime. The second regime revealed a slower rate of change of particle concentration and remained relatively unchanged for the remainder of each resuspension event.

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Section: Resuspension With Varied Contaminated Clothing Materials Typesupporting

confidence: 51%

The influence of human physical activity and contaminated clothing type on particle resuspension

McDonagh

Byrne

2014

Journal of Environmental Radioactivity

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“…(13) and (14) tively. It suggested that the model is applicable in the pressure drop and filtration efficiency.…”

Section: Modification Of the Response Surface Modelmentioning

confidence: 99%

“…(13) and (14) and proceeded with the analysis of variance. The corresponding analysis of variance is tabulated in Tables 10 and 11.…”

Section: Modification Of the Response Surface Modelmentioning

confidence: 99%

“…Original approaches for pressure drop modeling of woven fabrics were developed by Brasquet and Le Cloirec [11], who proposed a neural network approach, and Breard et al [12] took into account the double level of pores created by the interyarn and intra-yarn arrangements. In addition, there are many experimental studies dealing with the filtration efficiencies of air filters under dust loaded conditions [4,13] while few numerical simulation studies have been carried out on filtration efficiency of a woven filter. Moreover, the current studies in this area are most focus on the effect of the single factor on the filtration performance of the filter.…”

Section: Introductionmentioning

confidence: 99%

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RETRACTED: Study of the filtration performance of a plain wave fabric filter using response surface methodology

Qian

Wang

2010

Journal of Hazardous Materials

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“…Goodings (1964), Breard et al (2003) and Wang et al (2006) all model flow through the fabric with varying pore sizes. The filtration model of Benesse et al (2006), uses two different single fiber efficiencies for the yarn and the fibers. The IPE material is, however, very tightly woven, making any flow between the yarns negligible and the entirety of the flow can be assumed to pass through the yarns and between the fibers (Gibson et al 1999).…”

Section: Modeling Approachmentioning

confidence: 99%

Investigation of Aerosol Penetration Through Individual Protective Equipment in Elevated Wind Conditions

Hill

Ghee

Kaufman

et al. 2013

Aerosol Science and Technology

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A methodology to characterize particle penetration characteristics of individual protective equipment (IPE) under elevated wind conditions was developed. Performance of a complete IPE system can be determined from the knowledge of the performance characteristics of the IPE subsystems, or components. Here, particle penetration characteristics of a cylindrical-shaped component, consisting of an outer fabric sleeve enclosing an inner appendage, were studied as a function of particle size and ambient wind conditions. A component particle penetration model was developed by combining a potential flow model to calculate flow through and around a component with a filtration model. The filtration model combines classical filtration theory with simple bench-top experiments to determine net particle penetration. The component model predictions of particle penetration through a cylindrical component suggest that its filtration performance is strongly dependent on particle size and ambient wind velocities. To test model predictions, wind-tunnel experiments were conducted over an ambient wind velocity range of 10-80 mph (5-40 m s −1 ) and particle diameter range of 10 nm to 2 µm. The experimental results validated model predictions of particle penetration through a cylindrical component. The component model can be extended to model the integrated IPE system considering it to be composed of a combination of cylindrical components.

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Collection efficiency of a woven filter made of multifiber yarn: Experimental characterization during loading and clean filter modeling based on a two-tier single fiber approach

Cited by 22 publications

References 29 publications

The influence of human physical activity and contaminated clothing type on particle resuspension

The influence of human physical activity and contaminated clothing type on particle resuspension

RETRACTED: Study of the filtration performance of a plain wave fabric filter using response surface methodology

Investigation of Aerosol Penetration Through Individual Protective Equipment in Elevated Wind Conditions

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