Research on the characteristics of atmospheric air dielectric barrier discharge under different square wave pulse polarities

Song JIANG (姜松); Lifei HUANG (黄利飞); Zhonghang WU (吴忠航); Yonggang WANG (王永刚); Zi LI (李孜); Junfeng RAO (饶俊峰)

doi:10.1088/2058-6272/ac2b11

Plasma Science and Technology > 2021 > 23(12): 125404. > DOI: 10.1088/2058-6272/ac2b11

Song JIANG (姜松), Lifei HUANG (黄利飞), Zhonghang WU (吴忠航), Yonggang WANG (王永刚), Zi LI (李孜), Junfeng RAO (饶俊峰). Research on the characteristics of atmospheric air dielectric barrier discharge under different square wave pulse polarities[J]. Plasma Science and Technology, 2021, 23(12): 125404. DOI: 10.1088/2058-6272/ac2b11

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Research on the characteristics of atmospheric air dielectric barrier discharge under different square wave pulse polarities

¹ Department of Electrical Engineering, School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
² Department of Scientific Research, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China

Funds: This work is supported by Shanghai Sailing Program (No. 19YF1435000) and National Natural Science Foundation of China (Nos. 51707122 and 12005128).

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Received Date: August 26, 2021
Revised Date: September 25, 2021
Accepted Date: September 27, 2021

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Abstract

Abstract

Energy efficiency limits the application of atmospheric pressure dielectric barrier discharge (DBD), such as air purification, water treatment and material surface modification. This article focuses on the electrical and optical effects of the DBD under three square wave pulses polarities-positive, negative and bipolar. The result shows that under the same voltage with the quartz glass medium, the discharge efficiency of bipolar polarity pulse is the highest due to the influence of deposited charge. With the increase of air gap distance from 0.5 to 1.5 mm, average power consumed by the discharge air gap and discharge efficiency decrease obviously under alumina, and increase, and then decrease under quartz glass and polymethyl methacrylate (PMMA). Through spectrum diagnosis, in the quartz glass medium, the vibration temperature is the highest under negative polarity pulse excitation. Under bipolar pulse, the vibration temperature does not change significantly with the change of air gap distance. For the three dielectric materials of quartz glass, alumina and PMMA, the molecular vibration temperature is the highest under the quartz glass medium with the same voltage. When the gap spacing, pulse polarity or dielectric material are changed, the rotational temperature does not change significantly.
- dielectric barrier discharge,
- pulse polarity,
- energy efficiency,
- molecular vibrationaltemperature,
- rotational temperature

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References (26)

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