針対平板電極における直流コロナ放電のオゾン生成特性

概要

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For application to a small and simple ozone generator, we investigated the characteristics of ozone generation by positive and negative needle-to-plane corona discharges in the room air. The concentration and efficiency of the ozone generated in needle-to-plane corona discharges depends on the curvature of needle tip and the quantity of the room air supplied between the electrodes. The concentration and efficiency of the ozone decreases with increase in the curvature of needle tip. For the negative corona discharges, the concentration and efficiency of the ozone was higher than that generated in the positive corona discharges. The pulse corona discharges and the pulseless corona discharges were observed within the range of the curvature of needle tip which was used in this experiment. For the pulseless corona discharges, the concentration of the ozone was higher than that generated in the pulse corona discharges, however, the ozone efficiency of the pulseless corona discharges was lower than that generated in the pulse corona discharges.
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