Experimental study of filtration efficiency of nanoparticles below 20 nm at elevated temperatures

W. G. Shin; G. W. Mulholland; S. C. Kim; D. Y.H. Pui

doi:10.1016/j.jaerosci.2008.01.006

Experimental study of filtration efficiency of nanoparticles below 20 nm at elevated temperatures

W. G. Shin, G. W. Mulholland, S. C. Kim, D. Y.H. Pui

Mechanical Engineering

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39 Scopus citations

Abstract

This paper reports the measurements of the single fiber efficiency for a screen mesh at elevated temperatures up to 500 K for silver nanoparticles in the size range from 3 to 20 nm. Thermal rebound of particles from a filter surface is predicted to occur at 500 K for 3 nm diameter particles based on a theory by Wang and Kasper [(1991). Filtration efficiency of nanometer-size aerosol particles. Journal of Aerosol Science, 22, 31-41]; however, rebound was not detected in our study. A small change in the single fiber efficiency with temperature was observed for a fixed mass flow as is predicted by classical filtration theory. The measured increase of 8 % ± 5 % for particles of size 3, 4, and 5 nm is less than the 19% predicted by classical filtration theory. Measurements of particle penetration at a temperature of about 600 K were not possible because of particle production within the filter/holder.

Original language	English (US)
Pages (from-to)	488-499
Number of pages	12
Journal	Journal of Aerosol Science
Volume	39
Issue number	6
DOIs	https://doi.org/10.1016/j.jaerosci.2008.01.006
State	Published - Jun 2008

Bibliographical note

Funding Information:
The authors wish to acknowledge Center for Filtration Research (CFR) at the University of Minnesota for funding this project and University of Minnesota Supercomputing Institute for providing the computation time for this project. Parts of this work were carried out in the University of Minnesota I.T. Characterization Facility, which receives partial support from NSF through the NNIN program. The authors also would like to thank Prof. Thomas Kuehn at the University of Minnesota for his valuable comments on the analysis of heat transfer and an undergraduate research assistant, Yang Yang Bai, for his help in collecting experimental data.

Keywords

Elevated temperature
Filtration efficiency
Nanoparticle
Thermal rebound

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title = "Experimental study of filtration efficiency of nanoparticles below 20 nm at elevated temperatures",

abstract = "This paper reports the measurements of the single fiber efficiency for a screen mesh at elevated temperatures up to 500 K for silver nanoparticles in the size range from 3 to 20 nm. Thermal rebound of particles from a filter surface is predicted to occur at 500 K for 3 nm diameter particles based on a theory by Wang and Kasper [(1991). Filtration efficiency of nanometer-size aerosol particles. Journal of Aerosol Science, 22, 31-41]; however, rebound was not detected in our study. A small change in the single fiber efficiency with temperature was observed for a fixed mass flow as is predicted by classical filtration theory. The measured increase of 8 % ± 5 % for particles of size 3, 4, and 5 nm is less than the 19% predicted by classical filtration theory. Measurements of particle penetration at a temperature of about 600 K were not possible because of particle production within the filter/holder.",

keywords = "Elevated temperature, Filtration efficiency, Nanoparticle, Thermal rebound",

author = "Shin, {W. G.} and Mulholland, {G. W.} and Kim, {S. C.} and Pui, {D. Y.H.}",

note = "Funding Information: The authors wish to acknowledge Center for Filtration Research (CFR) at the University of Minnesota for funding this project and University of Minnesota Supercomputing Institute for providing the computation time for this project. Parts of this work were carried out in the University of Minnesota I.T. Characterization Facility, which receives partial support from NSF through the NNIN program. The authors also would like to thank Prof. Thomas Kuehn at the University of Minnesota for his valuable comments on the analysis of heat transfer and an undergraduate research assistant, Yang Yang Bai, for his help in collecting experimental data. ",

year = "2008",

month = jun,

doi = "10.1016/j.jaerosci.2008.01.006",

language = "English (US)",

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pages = "488--499",

journal = "Journal of Aerosol Science",

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AU - Shin, W. G.

AU - Mulholland, G. W.

AU - Kim, S. C.

AU - Pui, D. Y.H.

N1 - Funding Information: The authors wish to acknowledge Center for Filtration Research (CFR) at the University of Minnesota for funding this project and University of Minnesota Supercomputing Institute for providing the computation time for this project. Parts of this work were carried out in the University of Minnesota I.T. Characterization Facility, which receives partial support from NSF through the NNIN program. The authors also would like to thank Prof. Thomas Kuehn at the University of Minnesota for his valuable comments on the analysis of heat transfer and an undergraduate research assistant, Yang Yang Bai, for his help in collecting experimental data.

PY - 2008/6

Y1 - 2008/6

N2 - This paper reports the measurements of the single fiber efficiency for a screen mesh at elevated temperatures up to 500 K for silver nanoparticles in the size range from 3 to 20 nm. Thermal rebound of particles from a filter surface is predicted to occur at 500 K for 3 nm diameter particles based on a theory by Wang and Kasper [(1991). Filtration efficiency of nanometer-size aerosol particles. Journal of Aerosol Science, 22, 31-41]; however, rebound was not detected in our study. A small change in the single fiber efficiency with temperature was observed for a fixed mass flow as is predicted by classical filtration theory. The measured increase of 8 % ± 5 % for particles of size 3, 4, and 5 nm is less than the 19% predicted by classical filtration theory. Measurements of particle penetration at a temperature of about 600 K were not possible because of particle production within the filter/holder.

AB - This paper reports the measurements of the single fiber efficiency for a screen mesh at elevated temperatures up to 500 K for silver nanoparticles in the size range from 3 to 20 nm. Thermal rebound of particles from a filter surface is predicted to occur at 500 K for 3 nm diameter particles based on a theory by Wang and Kasper [(1991). Filtration efficiency of nanometer-size aerosol particles. Journal of Aerosol Science, 22, 31-41]; however, rebound was not detected in our study. A small change in the single fiber efficiency with temperature was observed for a fixed mass flow as is predicted by classical filtration theory. The measured increase of 8 % ± 5 % for particles of size 3, 4, and 5 nm is less than the 19% predicted by classical filtration theory. Measurements of particle penetration at a temperature of about 600 K were not possible because of particle production within the filter/holder.

KW - Elevated temperature

KW - Filtration efficiency

KW - Nanoparticle

KW - Thermal rebound

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Experimental study of filtration efficiency of nanoparticles below 20 nm at elevated temperatures

Abstract

Bibliographical note

Keywords

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