Effect of filter inhomogenity on deep bed filtration process
Rafał Przekop , Anna Izabella Jackiewicz-Zagórska
AbstractAerosol filtration in fibrous filters is one of the principal methods of accurate removal of particulate matter from stream of gas. The classical theory of depth filtration of aerosol particles in fibrous structures is based on the assumption of existing single fiber efficiency, which may be used to recalculation of overall efficiency of entire filter. There are several reasons for inappropriate estimation of the single fiber efficiency including assumption of negligible effect of presence of neighboring fibers and perpendicular orientation of the homogenous fibers in filter structure. The aim of this work is to investigate influence of mesoscale inhomogenity on fibrous filters performance using Digital Fluid Dynamics in models of filters differed by internal structure and to compare obtained results with experimental data. The influence of both, irregularity of structure and fiber size distribution on macroscopic filter performance (initial fractional efficiency, initial pressure drop and their time evolutions) were presented. This work was supported by National Science Centre under the grant number DEC-2012/07/B/ST8/03996
The 22nd Polish Conference of Chemical and Process Engineering: Proceedings, 2016, Łódź, Faculty of Process and Environmental Engineering, ISBN 978-83-61997-75-7, 1584 p.
Proceedings OKIChiP 2016.pdf / No licence information (file archived - login or check accessibility on faculty)
|Keywords in English||filtration, aerosol, porous media, Digital Fluid Dynamics|
|Project||Influence of fractal like nanoaggregates structure on the process of aerosolisation in complicated flow systems. Project leader: Przekop Rafał,
, Phone: 22 234 63 51, start date 09-07-2013, planned end date 08-07-2016, DEC-2012/07/B/ST8/03996, Implemented
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