Browse > Article

Effect of Inlet Diffuser-Angle for Flow Uniformity of Industrial Electrostatic Precipitators  

Kwon Hyun-Goo (Graduate School of Mechanical Engineering, Yonsei University)
Park Suk-Hwan (Graduate School of Mechanical Engineering, Yonsei University)
Cho Hyung-Hee (School of Mechanical Engineering, Yonsei University)
Park Ki-Seo (Korea Cottrell Co., Ltd.)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.4, 2006 , pp. 328-334 More about this Journal
Abstract
Industrial electrostatic precipitators require a highly uniform velocity distribution in the collecting chamber. Increasing divergence angle of a diffuser makes a non-uniformity flow distribution characteristics on the diffuser exit. This paper provides CFD results of optimum positions and opening rates of perforated plates which were installed in the electrostatic precipitator. The considered divergence angels were 60 degree and 90 degree. In 90 degree diffuser, a blanking method was used.
Keywords
Diffuser flow; Electrostatic precipitator; Divergence angle; Perforated plate;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Sahin, B. and Ward-Smith, A. J., 1987, The use of perforated plates to control the flow emerging from a wide-angle diffuser, with application to electrostatic precipitator design, Heat and Fluid Flow, Vol. 8, No.2, pp. 124-13l   DOI   ScienceOn
2 Ward-Smith, A. J., Lane, D. L., Reynolds, A. J., Sahin, B. and Shawe, D. J., 1991, Flow regime in wide-angle screen diffusers, Int. J. Mech. Sci., Vol.33, No.1, pp. 41-54   DOI   ScienceOn
3 Noui-Mehidi, M. N., Wu, J., Sutalo, I. D. and Grainger, C, 2005, Velocity distribution downstream of an asymmetric wide-angle diffuser, Exp. Thermal and Fluid Sci., Vol. 29-6, pp. 649-657
4 Schubauer, G. B. and Spangenberg, W. G., 1943, Effect of screens in wide-angle diffusers, National Advisory Committee for Aeronautics, TN No. 1610
5 Sahin, B., 1989, Pressure losses in an isolated perforated plate and jets emerging from the perforated plate, Int. J. Mech. Sci., Vol. 31, No.1, pp, 51-61   DOI   ScienceOn
6 Speziale, C. G. and Thangamn, S., 1992, Analysis of an RNG based turbulence model for separated flows, Int. J. Eng. Sci., Vol. 30, No. 10, pp. 1379-1388   DOI   ScienceOn
7 Sahin, B., Ward-Smith, A. J. and Lane, D., 1995, The pressure drop and flow characteristics of wide-angle screen diffuser of large area ratio, J. Wind Eng. and Industrial Aero., Vol. 58, pp, 33-50   DOI   ScienceOn
8 Sahin, B. and Ward-Smith, A. J., 1990, Effect of perforated plates on wide-angle diffuserexit velocity profiles, J. Wind Eng. and Industrial Aero., Vol. 34, pp. 113-125   DOI   ScienceOn
9 Sahin, B. and Ward-Smith, A J., 1993, The pressure distribution in and flow characteristics of wide-angle diffusers using perforated plates for flow control with application to electrostatic precipitators, Int. J. Mech. Sci., Vol. 35, No.2, pp.117-127   DOI   ScienceOn
10 EP2 Industrial Gas Cleaning Institute Specifications, U.S.A, 1973