Experimental study on the discharge characteristics of high-voltage nanosecond pulsed discharges and its effect on the ignition and combustion processes

被引:6
作者
Tian, Jie [1 ]
Xiong, Yong [1 ]
Liu, Zhenge [2 ]
Wang, Lu [1 ]
Wang, Yongqi [1 ]
Yin, Wei [1 ]
Cheng, Yong [1 ]
Zhao, Qingwu [3 ]
机构
[1] Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Peoples R China
[2] Shandong Technician Inst, Jinan 250200, Peoples R China
[3] Univ Surrey, Sch Mech Engn Sci, Guildford GU2 7XH, England
基金
中国国家自然科学基金;
关键词
Nanosecond pulsed discharge; Minimum ignition energy; Constant volume combustion bomb; Discharge characteristics; ENERGY;
D O I
10.1016/j.apenergy.2024.124011
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Non-equilibrium plasma has been proven to expand ignition limits and enhance combustion. This paper uses high-voltage nanosecond pulsed discharge (NPD) to generate non-equilibrium plasma and experimentally studies the discharge characteristics at different parameters in a constant-volume combustion bomb. NPD is used to ignite the methane-air mixture, and the effects of pulse power output voltage and pulse interval (PI) on ignition and combustion processes are studied. In addition, the minimum ignition energy (MIE) at different ignition methods (Transistor coil ignition (TCI) and NPD) is also studied. The results show that the first pulse of NPD discharge has a higher breakdown voltage and discharge energy when using multi-pulse discharge. After the second pulse, the highest breakdown voltage and current tend to stabilize, and the discharge energy remains unchanged. As the PI increases, the breakdown peak voltage and the peak current increase slightly. The study on the MIE of NPD shows that at different mixture concentrations, the MIE of NPD is smaller than that of TCI, and NPD can expand the lean burn limit. An increase in initial temperature can significantly reduce MIE. In addition, when the discharge energy is near the MIE, the combustion stability begins to decrease, and the combustion cycle fluctuates wildly. When the ignition energy is increased, the stability improves, and the combustion fluctuation rate can be maintained within 5%.
引用
收藏
页数:14
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