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Characteristics of corona and silent discharges as influenced by geometry of the discharge reactor

2003; Institute of Physics; Volume: 36; Issue: 3 Linguagem: Inglês

10.1088/0022-3727/36/3/306

1361-6463

M. Abdel‐Salam, A Hashem, Ashraf Yehia, Akira Mizuno, A Turky, Adel Gabr,

Electrohydrodynamics and Fluid Dynamics

This paper is aimed at investigating how the characteristics of corona and silent discharges including ozone generation are influenced by geometry of the discharge reactor. The corona discharges have been generated in coaxial wire–cylinder and wire–duct reactors stressed by dc and ac voltages. The silent discharges have been generated in the same reactors in addition to tubular reactors under ac voltage after pasting a dielectric barrier on the ground electrode of the reactors. The reactors were fed by dry air flowing at atmospheric pressure and temperature. The pulse characteristics of silent discharges are compared with those of ac corona discharges. The current–voltage and the ozone generation characteristics of silent and ac discharges are recorded. These characteristics depend significantly on the geometry of the reactor irrespective of the discharge type.