Characteristics of Atmospheric Pressure Rotating Gliding Arc Plasmas

ZHANG Hao (张浩); ZHU Fengsen (朱凤森); TU Xin (屠昕); BO Zheng (薄拯); CEN Kefa (岑可法); LI Xiaodong (李晓东)

doi:10.1088/1009-0630/18/5/05

Plasma Science and Technology > 2016 > 18(5): 473-477. > DOI: 10.1088/1009-0630/18/5/05

ZHANG Hao (张浩), ZHU Fengsen (朱凤森), TU Xin (屠昕), BO Zheng (薄拯), CEN Kefa (岑可法), LI Xiaodong (李晓东). Characteristics of Atmospheric Pressure Rotating Gliding Arc Plasmas[J]. Plasma Science and Technology, 2016, 18(5): 473-477. DOI: 10.1088/1009-0630/18/5/05

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Characteristics of Atmospheric Pressure Rotating Gliding Arc Plasmas

1 State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China 2 Department of Electrical Engineering and Electronics, University of Liverpool, Brownlow Hill, Liverpool L69 3GJ, UK

Funds: supported by National Natural Science Foundation of China (No. 51576174), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20120101110099) and the Fundamental Research Funds for the Central Universities (No. 2015FZA4011)

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Received Date: September 06, 2015

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Abstract

Abstract

In this work, a novel direct current (DC) atmospheric pressure rotating gliding arc (RGA) plasma reactor has been developed for plasma-assisted chemical reactions. The influence of the gas composition and the gas flow rate on the arc dynamic behaviour and the formation of reactive species in the N₂ and air gliding arc plasmas has been investigated by means of electrical signals, high speed photography, and optical emission spectroscopic diagnostics. Compared to conventional gliding arc reactors with knife-shaped electrodes which generally require a high flow rate (e.g., 10-20 L/min) to maintain a long arc length and reasonable plasma discharge zone, in this RGA system, a lower gas flow rate (e.g., 2 L/min) can also generate a larger effective plasma reaction zone with a longer arc length for chemical reactions. Two different motion patterns can be clearly observed in the N₂and air RGA plasmas. The time-resolved arc voltage signals show that three different arc dynamic modes, the arc restrike mode, takeover mode, and combined modes, can be clearly identified in the RGA plasmas. The occurrence of different motion and arc dynamic modes is strongly dependent on the composition of the working gas and gas flow rate.
- rotating gliding arc (RGA),
- gas flow rate,
- optical emission spectroscopy,
- motion behavior,
- electrical characteristics

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References

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