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Effect of horizontal inlet on slit-nozzle virtual impactor performance

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Abstract

We observed variations in collection efficiency and wall loss in a virtual impactor by applying a horizontal inlet. A parametric study on the dimensions of the horizontal inlet was conducted to determine the shape that could maximize the collection efficiency and minimize the wall loss. As a conventional vertical inlet was replaced by a horizontal inlet, the PM2.5 virtual impactor decreased the cut-off size by 17 % from 2.5 μm to 2.08 μm while the PM10 virtual impactor decreased the cut-off size by 22 % from 10 μm to 7.8 μm. The application of a horizontal inlet significantly reduced the wall loss for a particle size corresponding to a particular cut-off size, overcoming the problem with the existing virtual impactor.

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Authors and Affiliations

  1. School of Mechanical Engineering, Hanyang University, Seoul, 04763, Korea

    Ji-Eun Heo, Muhammad Zeeshan Zahir, Hyunjin Park, Jeonghyun Seo, Hyeongjun Park & Se-Jin Yook

Authors
  1. Ji-Eun Heo
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  2. Muhammad Zeeshan Zahir
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  3. Hyunjin Park
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  4. Jeonghyun Seo
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  5. Hyeongjun Park
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  6. Se-Jin Yook
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Corresponding author

Correspondence to Se-Jin Yook.

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Recommended by Associate Editor Seong Hyuk Lee

Ji-Eun Heo received the B.S. degree from the School of Bioindustial Mechanical Engineering, Chonbuk National University, Republic of Korea, in 2016. She is currently a M.S. student at Hanyang University, Republic of Korea. Her research interests include aerosol technology.

Muhammad Zeeshan Zahir received the B.S. degree from the Department of Mechanical Engineering, University of Engineering and Technology, Peshawar, Pakistan, in 2011. He is currently a Ph.D. student at the Hanyang University, Republic of Korea. His research interests include aerosol technology.

Hyunjin Park received the B.S. degree from the School of Mechanical Engineering, Hanyang University, Republic of Korea, in 2017. His research interests include heat transfer and aerosol technology.

Jeonghyun Seo received the B.S. degree from the School of Mechanical Engineering, Hanyang University, Republic of Korea, in 2017. His research interests include heat transfer and aerosol technology.

Hyeongjun Park received the B.S. degree from the School of Mechanical Engineering, Hanyang University, Republic of Korea, in 2017. His research interests include heat transfer and aerosol technology.

Se-Jin Yook received the Ph.D. degree from the Department of Mechanical Engineering, University of Minnesota, USA, in 2007. He is currently an Associate Professor at the School of Mechanical Engineering, Hanyang University, Republic of Korea. His research interests include heat transfer and aerosol technology.

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Heo, JE., Zahir, M.Z., Park, H. et al. Effect of horizontal inlet on slit-nozzle virtual impactor performance. J Mech Sci Technol 32, 2419–2424 (2018). https://doi.org/10.1007/s12206-018-0454-8

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  • DOI: https://doi.org/10.1007/s12206-018-0454-8

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