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Distributions of Fiber Mass, Air Permeability, and Filter Efficiency in Nonwoven Fabric Bag Filters
Author(s) -
Fukasawa Tomonori,
Kanaoka Chikao,
Kimura Isao,
Bao Li,
Ishigami Toru,
Fukui Kunihiro
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000472
Subject(s) - air permeability specific surface , filtration (mathematics) , permeability (electromagnetism) , materials science , filter (signal processing) , air filter , composite material , fiber , chromatography , chemistry , mathematics , engineering , membrane , mechanical engineering , biochemistry , statistics , layer (electronics) , electrical engineering , inlet
The accurate determination of physical properties of filtration media is essential for predicting their performance for bag filtration use. The spatial distributions of fiber mass, air permeability, and thickness of three commercially available filtration media were evaluated and compared with the manufacturer's indicated values. The fiber mass and air permeability were distributed over a wide range, resulting in a large deviation from the indicated values. The filter efficiencies were measured for ten randomly sampled pieces from each filter, and the filter efficiency of the whole filtration media and particle emission rate were estimated. Even for filters with a fiber mass and air permeability close to the indicated values, their filter performances differed by approximately 15 %.