Effect of air pressure on filtration performance of fibrous filter sheet

X. Yu, B. Xu*, Tongji University, China

Fibrous air filters have been prevalently used to capture airborne particulate matters (PMs) in the fields of air purification and sampling. A large number of theoretical and experimental studies have investigated the effects of various mechanisms, including Brownian diffusion, interception, inertial impaction, gravitational settling, and electrostatic attraction, on the overall collection efficiency of air filters [1-3]. However, the performance of fibrous filters under different air pressures has not been adequately studied.

This study conducted a series of experimental measurements to improve our understanding of aerosol filtration by fibrous filters under different air pressure conditions. The filtration efficiency and pressure drop were studied at different filter face air velocities and air pressures for different filter sheets. An empirical correction was derived to account for the air pressure effect on the filtration efficiency and pressure drop at different PM sizes...

Session: G10 - Short Oral + Poster Presentations I
Day: 14 March 2018
Time: 14:45 - 16:45 h

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