Diffusion deposition of aerosol particles on fibrous filters at small Peclet numbers

Cell and self-consistent models for a diffusion deposition of aerosol parti cles at small Peclet numbers were considered. Formulas for collection effic iency were derived depending on gas velocity the diffusion coefficient, and a radius of aerosol particles, as well as on the fiber diameter, the packi ng density, and the filter thickness. The theory developed agrees with the experimental data obtained for the cases of the deposition of particles on the model and real filters.