Positive direct current corona discharges in single wire-duct electrostatic precipitators

Abstract

This paper is aimed to study the characteristics of the positive dc corona discharges in single wire-duct electrostatic precipitators. Therefore, the corona discharges were formed inside dry air fed single wire-duct reactor under positive dc voltage at the normal atmospheric conditions. The corona current-voltage characteristics curves have been measured in parallel with the ozone concentration generated inside the reactor under different discharge conditions. The corona current-voltage characteristics curves have agreed with a semi empirical equation derived from the previous studies. The experimental results of the ozone concentration generated inside the reactor were formulated in the form of an empirical equation included the different parameters that were studied experimentally. The obtained equations are valid to expect both the current-voltage characteristics curves and the corresponding ozone concentration that generates with the positive dc corona discharges inside single wire-duct electrostatic precipitators under any operating conditions in the same range of the present study.

Propagation characteristics of audible noise generated by single corona source under positive DC voltage

“…The critical condition for the boundary of the two regions is that the value of ionization coefficient equals to the attachment coefficient (α=η). 1,25,26 The ionization coefficient and attachment coefficient are determined by electric field between the electrodes.…”

New Design of Ion Blower Based on Needle-Dielectric-Needle Bipolar Corona Discharge

“…Moreover, the ionic wind can remove atmospheric particle [13] and help to modify surface properties [14]. Bipolar corona discharge can generate the electroneutral ionic wind [15]- [17] which is useful in the fields of electrostatic control and electricity elimination [18]- [21]. Ionic wind from corona was firstly reported by Guericke [22] in 1672.…”