||Negative Corona in Wire-Plate Electrostatic Precipitators. Part 1. Characteristics of Individual Tuft-Corona Discharges.
Lawless, P. A. ;
McLean, K. J. ;
Sparks, L. E. ;
Ramsey, G. H. ;
||Wollongong Univ. (Australia). Dept. of Electrical and Computer Engineering. ;Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Electric corona ;
Electrostatic precipitators ;
Electrical properties ;
Electric discharges ;
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The article discusses the investigation of the characteristics of a single negative corona discharge tuft and how it interacts with another tuft when forced to do so. (Used during the investigation was a new analytical method developed to calculate the main electrical characteristics for a wire-plate geometry in which the wire is contaminated with dust and excited with a negative voltage.) Results were used to develop a complete analytical solution. The analysis identified a significant region of corona at voltages well below the peak critical voltage, Vc, beginning at the tuft onset voltage, Vt = 0.6 Vc. The method was also used to calculate the maximum current density under each tuft discharge and to make a reasonable estimate of the current distribution pattern on the plate and the number of tuft discharges per unit length of wire. (Copyright (c) Journal of Electrostatics, 1986.)