Experimental characterization and numerical modeling of a wire-to-cylinder corona discharge ozonizer

Ozone generation in an oxygen-fed wire-to-cylinder corona discharge ozonizer is investigated experimentally and numerically. The spatial distribution of chemical species produced in the corona discharge is obtained by means of a physico-chemical model that includes both elementary plasma processes (ionization, electron attachment and detachment, ion recombination, etc.) and chemical reactions between neutral species. The current-voltage characteristic measured in experiments is used as an input for the numerical simulation. Ozone concentration is determined by means of direct UV spectroscopy, and the effects of the gas flow rate and the anode radius are analyzed.