TY - JOUR
T1 - An analytical model for aerosol filtration by nonuniform filter media
AU - Shapiro, Michael
N1 - Funding Information:
Ackno~~,ledyml~nrs-This research was supported in part by the Israel Ministry of Science and Technology. The author is thankful to Prof. H. Fissan and Dr W. Molter for fruitful discussions, stimulating the performance of this study and to Dr S. Lekhtmakher for measuring the filtration efficiencies of glass bed filters. Comments of Dr E. Schmidt, Dr T. Liicke and Dr G. Kasper to a previous version of this manuscript are gratefully acknowledged.
PY - 1996/3
Y1 - 1996/3
N2 - Filtration of submicrometer aerosol particles by nonhomogenous porous filters is studied analytically. Analytical analyses are performed for a homogeneous bulk filter material containing a small volumetric fraction of spatial inhomogeneities (inclusions). An expression is derived for the effective filtration length of such a composite filter material, relative to the comparable length of the corresponding uniform matrix and the filtering properties of the inclusion. The model expression is tested by experiments performed for submicrometer aerosols, collected in a granular bed filter. The model predicts a nonmononic α-dependence of the effective filtration length, which qualitatively agrees with experimental data.
AB - Filtration of submicrometer aerosol particles by nonhomogenous porous filters is studied analytically. Analytical analyses are performed for a homogeneous bulk filter material containing a small volumetric fraction of spatial inhomogeneities (inclusions). An expression is derived for the effective filtration length of such a composite filter material, relative to the comparable length of the corresponding uniform matrix and the filtering properties of the inclusion. The model expression is tested by experiments performed for submicrometer aerosols, collected in a granular bed filter. The model predicts a nonmononic α-dependence of the effective filtration length, which qualitatively agrees with experimental data.
UR - http://www.scopus.com/inward/record.url?scp=0030111051&partnerID=8YFLogxK
U2 - 10.1016/0021-8502(95)00542-0
DO - 10.1016/0021-8502(95)00542-0
M3 - 文章
AN - SCOPUS:0030111051
SN - 0021-8502
VL - 27
SP - 263
EP - 280
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
IS - 2
ER -