OZONE GENERATION AS INFLUENCED BY GAS-FLOW IN CORONA REACTORS

This paper is aimed at studying the effect of gas flow on ozone genera tion in point-to-plane and wire-duct reactors stressed by positive and negative square-pulse voltages (50 ns rise time and 2 ms duration). T wo directions of gas flow were attempted; one normal to and the other parallel to the discharge electrode in the reactor. The concentration of the generated ozone increases with the discharge power and is highe r when generated by positive pulses (0-165 ppm) than generated by nega tive pulses (0-80 ppm) with axial flow in the point-plane reactor. The ozone generated with axial flow is higher than that produced with nor mal flow irrespective of the polarity of the applied pulses. For posit ive applied pulses, the concentration of generated ozone in the point- plane reactor is in the range 0-80 ppm with axial flow against a range of 0-30 ppm with normal flow for the same range of discharge power. T he ozone generated in the wire-duct reactor is several times higher th an that generated in the point-plane reactor irrespective of the polar ity of the applied pulses or the direction of the gas flow in the reac tor.