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Novel cross-flow electrostatic precipitator: Numerical and experimental study.

Ohioma Eboreime1, Muhammad Ali1,2, Khairul Alam2

  • 1Department of Mechanical Engineering, Ohio University, Athens, OH, USA.

Journal of the Air & Waste Management Association (1995)
|November 17, 2020
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Summary
This summary is machine-generated.

This study evaluated a new electrostatic precipitator (ESP) design using computational fluid dynamics. The novel cross-flow ESP showed particle collection primarily on the anterior and posterior surfaces of the first two rows.

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Area of Science:

  • Environmental Engineering
  • Fluid Dynamics
  • Electrostatic Separation

Background:

  • Traditional electrostatic precipitators (ESPs) use channel walls for particulate collection.
  • A novel ESP configuration with cylindrical surfaces in a crossflow arrangement has been patented.

Purpose of the Study:

  • To evaluate a novel, patented cross-flow electrostatic precipitator (ESP) configuration.
  • To model gas flow and particulate capture in this new ESP design using computational fluid dynamics (CFD).

Main Methods:

  • Developed and implemented User-Defined Functions (UDFs) in ANSYS Fluent software.
  • Created a two-dimensional numerical model for cross-flow ESP gas flow and particulate capture.
  • Simulated particle collection dynamics on cylindrical collector surfaces.

Main Results:

  • Particle collection was concentrated on the anterior and posterior surfaces of the first two collector rows.
  • Observed particle entrainment in collector wakes influenced by electric fields.
  • Simulation results underestimated experimental data, potentially due to electrode vibration, mist, or agglomeration.

Conclusions:

  • The numerical model provides foundational insights into the novel cross-flow ESP's collection mechanisms.
  • Findings offer critical data for enhancing particulate efficiency in this and similar cross-flow ESP systems.