Effect of volume and surface charges on discharge structure of glow dielectric barrier discharge

2013 ◽  
Vol 20 (8) ◽  
pp. 083515 ◽  
Author(s):  
Shao-Wei Xu ◽  
Feng He ◽  
Yu Wang ◽  
Lulu Li ◽  
Ji-Ting Ouyang
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Surface Charges ◽  
Dielectric Barrier ◽  
Discharge Structure

Spatiotemporal distribution of surface charges in square-grid state in a dielectric barrier discharge

2018 ◽  
Vol 25 (3) ◽  
pp. 033510
Author(s):  
Fang Hao ◽  
Lifang Dong ◽  
Tian Du ◽  
Ying Liu ◽  
Weili Fan ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Spatiotemporal Distribution ◽  
Surface Charges ◽  
Dielectric Barrier ◽  
Square Grid

Dielectric Barrier Discharge Structure Design for Sewage Treatment

2014 ◽  
Vol 1037 ◽  
pp. 57-60
Author(s):  
Jian Ping Jia ◽  
Li Cai ◽  
Shou Bo Zhang ◽  
Yuan Zhao
Keyword(s):  
Dielectric Barrier Discharge ◽  
High Efficiency ◽  
Barrier Discharge ◽  
Sewage Treatment ◽  
Structure Design ◽  
Treatment Technology ◽  
Temperature Plasma ◽  
Dielectric Barrier ◽  
Discharge Structure ◽  
Treatment Research

The problem of the urban water shortage and water pollution is becoming problem more and more serious. Therefore, governments around the world pay close attention to the application of sewage treatment technology, especially that with high efficiency, low energy consumption and strong operability. Dielectric barrier discharge (DBD) can produce low temperature plasma under atmospheric pressure, and the application of the technology for sewage treatment research gradually becomes to be one of hot research. In this paper, the dielectric barrier discharge structure is designed, and the plasma produced is used for sewage treatment research. The system adopts coaxial type discharge structure. The research shows that the structure is safe and reliable. And, it has low discharge power and can discharge uniformly. So, the plasma produced by dielectric barrier discharge can be convenient and easy to used in sewage treatment, and the result is effective.

Distribution and evolution of surface charge in surface dielectric barrier discharge driven by AC and pulse dual power supply

2021 ◽  
Author(s):  
Siqi Yu ◽  
Huijie Yan ◽  
Jiaqi Li ◽  
ting li ◽  
Yuying Wang ◽  
...  
Keyword(s):  
Surface Charge ◽  
Dielectric Barrier Discharge ◽  
Power Supply ◽  
Barrier Discharge ◽  
Surface Charges ◽  
Dielectric Barrier ◽  
Positive Pulse ◽  
Surface Dielectric Barrier Discharge ◽  
Filamentary Discharge ◽  
Dual Power

Abstract The evolution of surface charge in surface dielectric barrier discharge (SDBD) is observed by using Pockels effect. SDBD is driven by sine AC and pulse dual-power supply voltage. The filamentary discharge and glow-like discharge are enhanced by superimposing positive pulse on sine trough and negative pulse on sine crest, respectively. The interval of enhanced discharge is adjusted by pulse repetition rate (PRF). The formation and decay of surface charges are analyzed at low PRF, and the accumulation effect is analyzed at high PRF. The results showed that the decay rates of charges decrease with increasing distance from the exposed electrode. When a positive pulse is superimposed on sine trough, the traces of positive charges are filaments with long extending lengths, which are the footprints of discharge channels. The lifetime of positive charges is hundreds of AC cycles (tens of milliseconds). Under certain conditions, subsequent glow-like discharge evolves as “flying” above the dielectric surface (3D propagation). Most of the negative charges are neutralized in subsequent filamentary discharge. Some negative charges accumulate downstream and exist longer than positive charges. In the case of negative pulses superimposed on sine crest, the enhanced glow-like discharge appears 3D propagation. The propagation distance is much smaller than that of positive pulse. Most of the negative charges are uniformly distributed near the exposed electrodes with a short lifetime (a few hundred microseconds) and are quickly neutralized in subsequent discharges. The occurrence of 3D propagation requires certain conditions and the mechanism needs further research.

Dielectric Barrier Discharge Used in Sewage Treatment Research under the Atmospheric Pressure

2014 ◽  
Vol 539 ◽  
pp. 850-852
Author(s):  
Jian Ping Jia ◽  
Li Cai ◽  
Juan Lei
Keyword(s):  
Dielectric Barrier Discharge ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Sewage Treatment ◽  
Treatment Technology ◽  
Dielectric Barrier ◽  
Discharge Structure ◽  
Treatment Research ◽  
Non Thermal Plasma

Dielectric barrier discharge (DBD) can produce non-thermal plasma under atmospheric pressure, which has broad prospect in sewage treatment technology. In this paper, the dielectric barrier discharge structure is designed and the coaxial discharge structure is used. The experiments show that the structure is safe and reliable. At the same time, it has low discharge power and can discharge uniformly. So, the plasma produced by dielectric barrier discharge can be convenient and easy to used in sewage treatment, and the result is effective.

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