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Assuming a system of parallel cylinders as a model of fibrous aerosol filters it is possible to obtain better agreement with experimental values of the resistance and the efficiency of these filters in the case of pure diffusional deposition of aerosols than with the commonly used model of isolated cylinders. The remaining difference between the theory and experiment is apparently due to the random orientation of the fibres, the inhomogeneity of the filters and errors in measuring their porosity.
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Fuchs et al. (1963) studied this question.
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