scholarly journals Study of Dielectric Barrier Discharge in Air and Estimation of Electron Density and Energy Deposition

2019 ◽  
Vol 7 ◽  
pp. 1-9 ◽  
Author(s):  
Bhesh Bahadur Thapa ◽  
Raju Bhai Tyata
Keyword(s):  
Dielectric Barrier Discharge ◽  
Electron Density ◽  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Plasma Reactor ◽  
Atmospheric Pressure Plasma ◽  
Half Cycle ◽  
Voltage Versus ◽  
Dielectric Barrier

This paper reports the electrical behaviors of atmospheric pressure plasma reactor with Dielectric Barrier Discharge (DBD) in air medium. The DBD discharge was generated in air at atmospheric pressure using Disc Electrode Geometry (DEG) reactor powered by ac voltage (0-7kV) at a frequency of 24kHz. The glass plates of thickness 1.0mm and 3.0mm were used as dielectric. The current-voltage characteristics were studied for two air gap of 2.0mm and 3.0mm by varying the applied voltages. The numbers of filamentary micro discharges were found as increased in each half cycle with increase in power. The observations of Lissajous figure of applied voltage versus electric current was used for measuring energy deposited by discharge and also compared with calculated value. Lissajous figures clearly show that the energy deposited by discharge was dependent on applied voltage. The electron density of discharge was measured by power balance method. Electron density was found in the order of 1017 per cubic meter.

scholarly journals Comparison of dielectric barrier discharge in air, nitrogen and argon at atmospheric pressure

1970 ◽  
Vol 6 (2) ◽  
pp. 6-12
Author(s):  
RB Tyata ◽  
DP Subedi ◽  
CS Wong
Keyword(s):  
Glow Discharge ◽  
Dielectric Barrier Discharge ◽  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Electrode Spacing ◽  
Half Cycle ◽  
Dielectric Barrier ◽  
Plane Electrode ◽  
Filamentary Discharge

This paper reports the results of electrical characterization of dielectric barrier discharge (DBD) generated in air, nitrogen and argon at atmospheric pressure. Polycarbonate plate of thickness 1 mm was used as a dielectric barrier in a specially designed hemispherical-plane electrode system. A nonuniform filamentary type of discharge was observed in air. Introducing nitrogen and argon gas at controlled flow rate of 1-2 liters / minute resulted a more homogeneous discharge at a frequency of 28 kHz of the AC source. The discharge was investigated for two values of electrode gap of 1 mm and 2 mm by varying the applied voltage. The number of current pulse per half cycle and the magnitude of the discharge current were found to be higher in the case of air discharge in comparison to the discharge in nitrogen and argon. The characteristics of the discharge in air in the absence dielectric barrier was also examined and interestingly it was found that in this case the filamentary discharge turned to a glow discharge for specific value of applied voltage and electrode spacing. Keywords: DBD; Glow Discharge; hemispherical-plane electrode; filamentary discharge; Polycarbonate Sheet DOI: 10.3126/kuset.v6i2.4006Kathmandu University Journal of Science, Engineering and Technology Vol.6. No II, November, 2010, pp.6-12

scholarly journals Treatment of PET and PU polymers by atmospheric pressure plasma generated in dielectric barrier discharge in air

2010 ◽  
Vol 204 (18-19) ◽  
pp. 3064-3068 ◽  
Author(s):  
K.G. Kostov ◽  
A.L.R. dos Santos ◽  
R.Y. Honda ◽  
P.A.P. Nascente ◽  
M.E. Kayama ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Atmospheric Pressure Plasma ◽  
Dielectric Barrier ◽  
Pressure Plasma
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