Effect of Three Phase Superposed Discharge Method on Ozone Generation

Abstract

Recently, ozone is utilized in various fields and its needs are expanding. Therefore, high performance of ozone generation technology is desired, and so many ozone generation methods have been reported in the latest few years. One of them is the superposed discharge method. The method can superpose some discharges in the same space of the discharge tube and reduce the discharge-rest-time. So it can improve ozone generation characteristics.
The purpose of this study is to improve the ozone generation efficiency and to get the high ozone concentration. Therefore, a novel ozone generation system using three phase source and a special discharge tube is proposed in this study. Using this system, it is considered that two silent discharges and a surface discharge are generated successively and superposed in the same space of the discharge tube at the same time. Therefore, there is no discharge-rest-time. The characteristics of superposed discharge mode are compared with those of individual discharge mode, that is, the silent or surface discharge mode.
As a result, the ozone generation and ozone concentration in superposed discharge mode are higher than those of individual discharge mode. And the ozone yield in superposed discharge mode is higher than that of individual discharge mode in spite of the high ozone concentration. This shows that a particular process for ozone generation occurs in this discharge mode and brings about high ozone concentration and high ozone yield.