This paper presents a comparative study of ozone generation under pulsed and continuous ac dielectric barrier discharge (DBD). An oxygen-fed DBD reactor with a narrow discharge gap of 0.4 mm was used in the experiments. DBD discharge modes under pulsed and continuous ac energisation were investigated and compared in this work. Negative impulses with the pulse length of 500 ns and repetition rate of 200 pps were employed to produce ozone at four different concentrations of 18.4 g/Nm3, 34.8 g/Nm3, 38.1 g/Nm3 and 52.5 g/Nm3, while in the case of ac energisation, sinusoidal voltage with the frequency of 25 kHz was applied to produce ozone at similar concentrations. The discharge power and ozone production efficiency at these ozone concentrations were obtained and compared for both energisation modes. It is shown that both pulsed and continuous ac dielectric barrier discharges have a filamentary mode and continuous ac energisation results in 18% increase in the efficiency as compared with pulsed energisation.
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机译：本文介绍了在脉冲和连续交流电介质势垒放电（DBD）下产生臭氧的比较研究。在实验中使用了氧气排放的DBD反应器，其排放间隙窄至0.4 mm。在这项工作中，研究了脉冲和连续交流激励下的DBD放电模式。使用脉冲长度为500 ns且重复频率为200 pps的负脉冲来产生四种浓度分别为18.4 g / Nm3、34.8 g / Nm3、38.1 g / Nm3和52.5 g / Nm3的臭氧，而对于在交流电激励下，施加频率为25 kHz的正弦电压以产生类似浓度的臭氧。获得了在这些臭氧浓度下的放电功率和臭氧生产效率，并对两种激励模式进行了比较。结果表明，脉冲和连续交流介质阻挡放电都具有丝状模式，连续交流激励与脉冲激励相比，效率提高了18％。
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