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Modeling Penetration through Fibrous Filter during Dynamic Filtration

Category: Air Pollution Modeling

Volume: 15 | Issue: 2 | Pages: 648-656
DOI: 10.4209/aaqr.2014.04.0081
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Bichao Bao1, Weilang He1, Huan Zhao1, Bin Xu2, Zhongping Lin 1

  • 1 School of Mechanical Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
  • 2 Department of Environmental Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China

Highlights

Model to describe penetration change during clogging for filter is developed. 

Filter penetration is a function of coefficient Κ and deposited dust mass. 

Model is verified through laboratory filter experiments with dust loading. 

The coefficient Κ is obtained using regression analysis. 


Abstract

A model to quantitatively describe penetration change during filter clogging through a fiber filter is proposed. This model is developed using two different analytical methods and indicates that filter penetration is a function of the coefficient K and deposited dust mass in the filter. This is verified through a number of laboratory filter experiments. The coefficient K is obtained using regression analysis via the results of the experiments with different dust loading parameters. K is expressed as a function of aerosol particle diameter, efficiency, and filter material. A larger value of K illustrates a higher increasing rate of efficiency during clogging. A larger value of K also correlates with a smaller aerosol particle size and a higher penetration filter.

Keywords

Penetration model Dynamic filtration Fibrous filter


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