Abstract
There are two major criteria for the performance evaluation of cyclone separators: particle collection efficiency and pressure drop. It is desirable to improve particle efficiency without increasing pressure drop. In this study, a counter cone was installed inside an axial cyclone is investigated. It was found that the d/B (ratio of the diameter of the cone to dust box inlet diameter in the cyclone separator) influences the particle collection efficiency. A small cone (0 < d/B ≤ 0.55) slightly improves the particle collection efficiency, and when d/B is equal to 0.66, the efficiency reaches a maximum. If d/B increases further, the efficiency decreases. Especially, when the d/B is equal to 0.94, the gap between becomes very narrow resulting in lowering the particle collection efficiency. On the other hand, regardless of the size of the counter cone, the turbulence kinetic energy inside the axial cyclone is not affected and thus the pressure drop can remain unchanged. And we propose a correction factor based on Hsiao et al.’s model (2011) for the prediction of the efficiency of spindle axial cyclone with a counter cone.
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This work was supported by the National Research Foundation (NRF) of Korea grant funded by Ministry of Science and ICT (2020M3F6A1110246, 2022R1A2C2013508).
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Shuo Zhang is a Postdoctoral Research Associate at Southeast University, China. He received his Ph.D. degree from Chungnam National University, Republic of Korea in 2022. His research interests include aerosol technology and fluid mechanics.
Weon Gyu Shin is a Professor of the School of Mechanical Engineering, Chungnam National University, Daejeon, Korea. He received his Ph.D. from the university of Minnesota, Minneapolis, USA. His research interests include aerosol science and technology and thermo-fluid science.
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Zhang, S., Shin, W.G. The effect of a counter cone on the performance of an axial cyclone separator. J Mech Sci Technol 37, 4889–4898 (2023). https://doi.org/10.1007/s12206-023-0842-6
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DOI: https://doi.org/10.1007/s12206-023-0842-6