Comparison of Electric Field of Corona Discharge in Single-Wire- and Multi-Wire-to-Plate Electrode Systems

摘要

Direct current corona discharge is often used in many industry applications. Corona discharge electrode represented by thin wire or a needle charges small particles and liquid droplets. Some of corona discharge devices have electrode systems with many corona electrodes to have more charged particles or to control trajectories of their motion. Many geometrical forms of corona discharge electrode could be wires, pins, needles and another. The corona discharge electric field of multi-corona electrode system is different from single corona electrode system. The charge of each electrode produces electric field and influences another electrode field. To compute this field this influence must be assessed. Other researchers tried to solve this problem long before [1]. Nowadays there are many experimental research results of the discharge in multi-electrode systems. They involve bacterium cleaning in drinking water [2], the effect of the air flow in multi-electrode corona field [3], enhancement of drying effect [4], ozone generation characteristics in multi-point, corona electrodes [5], etc.