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Microstructure and particle filtration behavior of multimodal fibrous filter media made of fibres of different sizes for engine intake air filtration

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Title Microstructure and particle filtration behavior of multimodal fibrous filter media made of fibres of different sizes for engine intake air filtration
 
Creator Yadav, Shivendra
Das, Dipayan
 
Subject Dynamic filtration behavior
Engine intake air filtration
Fibrous filter media
Multimodal fibre size distribution
Polypropylene fibre
 
Description 164-174
This paper reports a set of theoretical expressions for describing the microstructure of multimodal fibrous filter media
comprising fibres of different cross-sectional sizes along with the application of such expressions to predict the filtration
performance of clean and clogging media for engine intake air filtration. It is found that the overall filtration efficiency
corresponds very well with the classical theory of air filtration after suitably modifying the single fibre efficiency and mean
fibre diameter. The square of mean fibre diameter is found to be a weighted harmonic mean of the square of fibre diameter
of individual component. The single fibre efficiency of multimodal filter media, when expressed as a summation of single
fibre efficiencies of individual component of fibres weighted by the corresponding surface area fraction, correlates very well
with the experimental results. The evolution of pressure drop is explained satisfactorily based on Berman’s approach after
suitably modifying the Davies equation.
 
Date 2022-06-28T11:47:05Z
2022-06-28T11:47:05Z
2022-06
 
Type Article
 
Identifier 0975-1025 (Online); 0971-0426 (Print)
http://nopr.niscpr.res.in/handle/123456789/59953
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJFTR Vol.47(2) [June 2022]