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Fractional Penetrations for Electrostatically Charged Fibrous Filters in the Submicron Particle Size Range
Author(s) -
Lathrache Reda,
Fissan Heinz
Publication year - 1986
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19860030206
Subject(s) - penetration (warfare) , particle size , dispersity , range (aeronautics) , materials science , particle (ecology) , charged particle , mechanics , molecular physics , composite material , chemistry , physics , polymer chemistry , ion , oceanography , organic chemistry , operations research , engineering , geology
Particle penetrations through commercially available, electrically charged fibrous filters have been measured. The particles were monodisperse and in charge equilibrium. Tests were conducted for several particle sizes in the range 0.02 μm ≤ x ≤ 1 μm. The face velocity was varied in the range of 2 cm/s to 30 cm/s. The penetration has a bimodal dependence on particle size. This behaviour is not found for uncharged filters. The reduction in penetration and bimodal dependence is attributed to electrical collection effects. As the face velocity is increased, the electrostatic collection effects are significantly reduced. The results agree quantitatively with a model for particle penetration through charged fibrous filters recently presented in the literature by the authors.