The aerosol penetration through an electret fibrous filter

The aim of this paper is to present a theoretical study of the aerosol penetrationthrough an electret fibrous filter, using a numerical approach. The aerosol sizesconsidered in this study were in the submicron range, and in the numerical model,the conventional mechanical mechanisms (impaction, interception, diffusion andgravitationally settling) were taken into consideration along with the electrostaticmechanisms, including the Coulombic and dielectrophoretic effects. The aerosolpenetration through an electret fibrous filter is heavily dependent on the aerosolpenetration of a single fibre. The aerosol penetration through a single electretfibre under various filtration conditions was calculated. The effects of aerosoldiameter, aerosol and fibre charge state, face velocity, packing density and aerosoldielectric constant on the aerosol penetration were investigated.