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The efficiency of fibrous aerosol filters: Deposition by diffusion of particles of finite diameter

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Abstract

A brief review is given of the derivation of a semi-theoretical expression for the filtration efficiency of fibrous aerosol filters operated at low velocities. The correlation is compared with new data taken from the literature and is presented in a simplified form for design calculations. The existence of a minimum filtration efficiency is discussed and theory and data are compared.

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