Volume 15, No. 2, April 2015, Pages 648-656 PDF(523 KB)
Modeling Penetration through Fibrous Filter during Dynamic Filtration
Bichao Bao1, Weilang He1, Huan Zhao1, Bin Xu2, Zhongping Lin1
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
- 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.
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.
Penetration model; Dynamic filtration; Fibrous filter.