颗粒填充对介质阻挡放电制臭氧性能的影响

发布时间：2018-04-14 01:24

  本文选题：等离子体 + 介质阻挡放电　； 参考：《核聚变与等离子体物理》2017年03期

【摘要】：在同轴圆柱单介质内外双水冷结构的DBD臭氧发生器的放电间隙内分别填充玻璃珠、高铝瓷、石英砂和熔融石英砂等颗粒,研究填充颗粒材料、粒径大小、间隙宽度等参数对臭氧生成效率的影响。结果表明:颗粒材料的介电常数是影响其臭氧制取效果的主要因素,随着介电常数的增加,间隙击穿电压降低,但由于颗粒导致电场的畸变,间隙折合场强增加,臭氧生成的最大能效降低,饱和浓度提升;高铝瓷具有最高的臭氧饱和浓度,与未填充的空床相比,饱和浓度提升136%;对于填充不同粒径熔融石英砂颗粒,随着粒径的增加,间隙击穿电压上升,间隙的折合场强提高,臭氧生成的最大能效降低,而饱和浓度提升;通过在宽间隙内填充介质颗粒可以得到窄间隙宽度的臭氧制取效果。
[Abstract]:Glass beads, high alumina porcelain, quartz sand and fused quartz sand were filled in the discharge gap of DBD ozone generator with coaxial single medium and double water cooling structure respectively.The effect of gap width and other parameters on ozone formation efficiency.The results show that the dielectric constant of granular material is the main factor affecting the effect of ozone preparation. With the increase of dielectric constant, the gap breakdown voltage decreases, but because of the distortion of electric field caused by particles, the gap break field strength increases.The maximum energy efficiency of ozone formation is reduced and the saturation concentration is increased. The highest ozone saturation concentration is found in high alumina ceramics. Compared with unfilled empty bed, the saturation concentration increases by 136 percent. For filling molten quartz sand with different particle sizes, the saturation concentration increases with the increase of particle size.With the increase of gap breakdown voltage, the reduced field strength of gap increases, the maximum energy efficiency of ozone generation decreases, and the saturation concentration increases. By filling medium particles in wide gap, the effect of ozone production with narrow gap width can be obtained.
【作者单位】： 中国科学技术大学工程科学学院;
【基金】：国家自然科学基金(11475174,11035005)
【分类号】：TQ123.2
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本文编号：1747101