A barbed plate precipitator minimizes corona discharge tuft spacing and, thus, current inhomogeneities within the precipitator flow channel. Visualization of the interelectrode flow gives physical insight into the structure of the electrohydrodynamic flow. Still photographs of the flow are interpreted in light of measured current-voltage relationships, turbulence intensities, integral length scales, and eddy diffusivities. Comparison with gas flow in the wire-plate precipitator indicates that increases in turbulence intensity in the barbed plate geometry are offset by reductions in the scale of the electrically induced flow. As a result, gas diffusivities are diminished.
Bibliographical noteFunding Information:
Paper IUSD 89-96, approved by the Electrostatic Processes Committee of the IEEE Industry Applications Society for presentation at the 1989 Industry Applications Society Annual Meeting, San Diego, CA, October 1-5. Manuscript released for publication June 25, 1990. This work was supported by the U.S. Environmental Protection Agency under Grant R-813645-01-0.