Effect of a Horizontal Inlet on the Collection Efficiency of a Rectangular-Slit-Nozzle Impactor |
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| Authors: | Won-Geun Kim Handol Lee Ju-Ho Myoung Sang-Ki Han Kang-Ho Ahn |
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| Affiliation: | 1. School of Mechanical Engineering, Hanyang University, Seoul, Republic of Korea;2. Department of Mechanical Engineering, Hanyang University, Ansan, Republic of Korea |
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| Abstract: | A horizontal inlet was employed to improve the collection efficiency of a rectangular-slit-nozzle impactor. A numerical and experimental study of the collection efficiency of rectangular-slit-nozzle impactors, with either typical inlets or horizontal inlets, was conducted. In the comparison of typical inlet impactors and horizontal-inlet impactors, parameters such as the nozzle width, impaction plate width, nozzle-to-plate distance, and aerosol flow rate were held constant, and only the inlet shape was changed. A parametric study was conducted to examine the effects of the horizontal inlet dimensions on the collection efficiency of rectangular-slit-nozzle impactors. It was found that a horizontal inlet could reduce the square root of the Stokes number corresponding to the cutoff size from 0.77 to 0.60, compared with a typical inlet. Copyright 2014 American Association for Aerosol Research |
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