Kung-Yu Kuo, Chuen-Jinn Tsai

  • Institute of Environmental Engineering, National Chiao Tung University, No, 75, Poai St., 300 Hsinchu, Taiwan, ROC

Received: May 31, 2001
Revised: May 31, 2001
Accepted: May 31, 2001
Download Citation: ||https://doi.org/10.4209/aaqr.2001.06.0005  

  • Download: PDF


Cite this article:
Kuo, K.Y. and Tsai, C.J. (2001). On the Theory of Particle Cutoff Diameter and Collection Efficiency of Cyclones. Aerosol Air Qual. Res. 1: 47-56. https://doi.org/10.4209/aaqr.2001.06.0005


 

ABSTRACT


This study is aimed at investigating the accuracy of four existing theories on the cutoff diameter of cyclones, including Lapple (1950), Stairmand (1951), Barth (1956) and Iozia and Leith (1989), and six on the collection efficiency of cyclones, including Lapple (1950), Barth (1956), Leith and Licht (1972), Dietz (1981), Li and Wang (1989), and Iozia and Leith (1990). The predicted collection efficiency curves of the six different theories were compared with the experimental date in the literature. The comparison shows that different sets of experimental data agree better with a particular theory than the other theories and that none of the theories fits all the available experimental data perfectly well. The experimental data for the cutoff aerodynamic, Dpa50, were further plotted in the log-log coordinate of √CDpa50/D, versus Ref and found to form a straight line (C: slip correction factor, D: cylindrical diameter of cyclone, Ref: flow Reynolds number based on the radius of the cyclone minus the radius of the exit tube). In the plot, the experimental data were compared with four different theoretical predictions on the cutoff aerodynamic diameter. It was found that these four theories are more accurate when Ref is between 10000 and 100000 and that none of them is better than the others.


Keywords: Cyclone; Collection efficiency; Cutoff diameter


Share this article with your colleagues 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

7.3
2022CiteScore
 
 
77st percentile
Powered by
Scopus
 
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Call for Papers for the special issue on: "Carbonaceous Aerosols in the Atmosphere"

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.