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http://dx.doi.org/10.11629/jpaar.2013.9.2.079

A Study on Collecting Electrode Design for Developing Electrostatic Precipitator(ESP) of Urban Railway Underground Tunnels  

Koo, Tae Yong (Graduate Program in Clean Technology, Yonsei University)
Kim, Yong Min (R & D Department, KC Cottrell Co., Ltd.)
Hong, Jung Hee (R & D Department, KC Cottrell Co., Ltd.)
Hwang, Jungho (Graduate Program in Clean Technology, Yonsei University)
Publication Information
Particle and aerosol research / v.9, no.2, 2013 , pp. 79-87 More about this Journal
Abstract
In this study, the characteristics of turbulent flow and collection efficiency for an one-stage electrostatic precipitator(ESP) with slit type collecting electrode for urban railway underground tunnels were obtained using computational fluid dynamics(CFD) commercial code FLUENT 6.3 and lab-scale experiments. The electrostatic precipitator was operated under high gas velocity(3~12m/s). Five different designs of collecting electrode, flat plate-type and a slit-type of 3mm, 5mm, 7mm and 10mm slit width and four various gas velocity(3, 6, 9, and 12m/s) were used and applied. A standard k-${\varepsilon}$ model in CFD commercial code FLUENT 6.3 was used for flow simulation. The flow simulation results showed that the turbulent intensity of flat plate-type was higher than slit-type under all gas velocity conditions and also the turbulent intensity of flat plate-type was increased continuously, but in case of slit-type was maintained at constant range. And, the turbulent intensity was decreased according to increasing of slit width. The experimental results showed that the collection efficiency of slit-type was higher than flat plate-type under all gas velocity conditions. And, over 6m/s gas velocity condition, the collection efficiency of 5mm and 7mm was highest, when compared to 3mm and 10mm.
Keywords
Underground railway tunnel; Electrostatic precipitator(ESP); Collection efficiency; Collecting electrode; Slit;
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Times Cited By KSCI : 1  (Citation Analysis)
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