We investigated the air supply mode effects on ozone production of the surface dielectric barrier discharge in the cylindrical configuration. The air into the discharge volume between two coaxial cylinders was supplied through four nozzles axially or tangentially. Using tangential air supply, the vortex flow in the part of the discharge chamber was created. Because the active electrode was in the form of interconnected rings on the outer surface of the glass tube, we changed the airflow orientation concerning this electrode. The existence of vortex airflow affects the plasmachemical processes taking part in the discharge, and therefore, it affects discharge ozone production. We also paid attention to ozone concentration and temperature of output air measurements as a function of the duration of the experiment for both tangential and axial air supply modes. We found that the time required for the stabilization of generated ozone concentration depends on the discharge power, and for our experimental conditions, it smaller than approximately 70 s. Besides, in the case of tangential air supply into the discharge chamber, the concentration of ozone produced by the discharge is for higher discharge power increased in comparison with the concentration for the axial air supply mode.

我们研究了空气供应模式对圆柱形结构中表面介电势垒放电的臭氧产生的影响。空气通过两个喷嘴轴向或切向地供应到两个同轴气缸之间的排放空间中。使用切向空气供应，在放电室部分中产生了涡流。因为有源电极在玻璃管的外表面上呈互连环的形式，所以我们更改了与该电极有关的气流方向。涡流的存在会影响参与放电的等离子体化学过程，因此会影响放电中臭氧的产生。对于切向和轴向供气模式，我们还关注臭氧浓度和输出空气温度与实验持续时间的关系。我们发现稳定产生的臭氧浓度所需的时间取决于放电功率，对于我们的实验条件，该时间小于约70 s。此外，在向排气室中切向地供应空气的情况下，与轴向空气供应模式的浓度相比，由放电产生的臭氧的浓度用于更高的排放功率。