Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Numerical Investigation on Capture of Sub-Micron particles in Electrostatic Precipitator without Corona Discharger

코로나 방전기가 없는 전기집진기의 미세입자 집진에 관한 수치해석

  • 이진운 (중앙대학교 기계공학부) ;
  • 장재성 (울산과학기술대 기계신소재공학부) ;
  • 이성혁 (중앙대학교 기계공학부)
  • Received : 2011.02.16
  • Accepted : 2011.06.10
  • Published : 2011.06.30
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Abstract

This article presents computational fluid dynamics (CFD) simulations of sub-micron particle movements and flow characteristics in laboratory-scale electrostatic precipitator (ESP) without corona discharge, and for simulation, it uses the commercial CFD program (CFD-ACE) including electrostatic theory and Lagrangian-based equation for sub-micron particle movement. For validation of CFD results, a simple cylindrical type of ESP is simulated and numerical prediction shows fairly good agreement with the analytical solution. In particular, the present study investigates the effect of particle diameter, inlet flow rate, and applied electric potential on particle collection efficiency and compares the numerical prediction with the experimental data, showing good agreement. It is found that the particle collection efficiency decreases with increasing inlet flow rate because the particle detention time becomes shorter, whereas it decreases with the increase in sub-micron particle diameter and with the decrease of applied electric voltage resulting from smaller terminal electrostatic velocity.

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References

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