scholarly journals GAS TEMPERATURE MEASUREMENT IN THE ACTIVE ZONE OF STREAMER DISCHARGE UNDER DIFFERENT APPLIED VOLTAGES

2021 ◽  
pp. 89-92
Author(s):  
O.V. Bolotov ◽  
V.I. Golota ◽  
G.V. Taran
Keyword(s):  
Temperature Measurement ◽  
Electronic State ◽  
Relative Intensity ◽  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Active Zone ◽  
Optical Method ◽  
Gas Temperature ◽  
Streamer Discharge ◽  
Discharge Gap

The experimental results on the gas temperature measurement in the active zone of streamer discharge in air at the atmospheric pressure are presented. The gas temperature value was obtained by the optical method for measur-ing the relative intensity of the rotational lines for the radiation of the second positive (II+) system of molecular ni-trogen, transition bands (С3Пu(0)→B3Пg(0)). It was found that in discharge gap d = 8 mm, depending on the ap-plied voltage (in the range of 6.1…7.8 kV with a step of 0.2 kV), the gas temperature varied from 609 to739 K. The unevenness of the gas temperature change in the active zone of discharge with the increase in the applied voltage is shown. This may be related to the possible changes in the rotational state of nitrogen molecules upon excitation of their electronic state by electrons.

Research on the Time and Space Characteristic of Argon Dielectric Barrier Discharge at Atmospheric Pressure

2014 ◽  
Vol 1008-1009 ◽  
pp. 630-634
Author(s):  
Zhi Nan Liu ◽  
Hui Min Ge
Keyword(s):  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Fluid Model ◽  
Electrical Characteristics ◽  
Number Density ◽  
Plasma Parameters ◽  
One Dimensional ◽  
Space Characteristic ◽  
Discharge Gap ◽  
Bright Area

Numerical calculations with time dependant one-dimensional fluid model are performed at various conditions in argon atmospheric pressure to calculate electrical characteristics and plasma parameters including charged and metastable molecules densities. The simulation results show after steady discharge are formed, the voltage of discharge gap nearly remain constant and the phase is 0.36π advance of the applied voltage; The current density are in the same period as the applied voltage, the phase is 0.58π ahead of the applied voltage; The steady state Ar are in high number density in the whole discharge gap; The Ar* number density appear peak at the middle of the discharge gap; The Ar+ number density appear peak in the negative bright area.

Investigation of a Plasma Jet Generated by High Voltage Discharge at Atmospheric Pressure

2011 ◽  
Vol 383-390 ◽  
pp. 5907-5911 ◽  
Author(s):  
Xue Chen Li ◽  
Ning Yuan ◽  
Peng Ying Jia
Keyword(s):  
Flow Rate ◽  
High Voltage ◽  
Discharge Current ◽  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Gas Flow ◽  
Plasma Plume ◽  
Gas Temperature ◽  
Gas Flow Rate ◽  
Uniform Plasma

Appling a high voltage to the dielectric barrier discharge device in a coaxial geometry in flowing argon, a uniform plasma plume is generated at one atmospheric pressure. The waveforms of discharge current and the applied voltage are investigated and results indicate that both the intensity and duration width of the discharge current pulse increase with increasing the applied voltage. The gas temperature of the plasma plume is investigated by using an infrared thermometer. The gas temperature of the plasma plume are functions of gas flow rate, peak value and the frequency of the applied voltage. Results show that the gas temperature increases with increasing the applied voltage or its frequency, while it decreases with increasing the gas flow rate. A qualitative explanation is given for the variance of gas temperature as functions of the experimental parameters by analyzing the waveforms of the discharge current and the applied voltage.

scholarly journals Electrical and Spectroscopic Diagnostics of Atmospheric Pressure DBD Plasma Jet

2016 ◽  
Vol 40 (1) ◽  
pp. 23-36
Author(s):  
NC Roy ◽  
MR Talukder
Keyword(s):  
Flow Rate ◽  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Gas Flow ◽  
Optical Emission ◽  
Plasma Jet ◽  
Diagnostic Techniques ◽  
Gas Temperature ◽  
Gas Flow Rate ◽  
Dbd Plasma

Atmospheric pressure capillary dielectric barrier oxygen discharge plasma jet is developed to generate nonthermal plasma using unipolar positive pulse power supply. Both electrical and optical diagnostic techniques were used to characterize the produced plasma as functions of applied voltage and gas flow rate. Electrical diagnostics indicated that the discharge frequency decreased with gas flow rate but increased with the applied voltage. Analytical results obtained from the optical emission spectroscopic data revealed the gas temperature, excitation temperature and electron density. Gas temperature was found to decrease with increasing oxygen flow rate but increase linearly with applied voltage. The produced plasma was applied preliminarily to study the inactivation yield of Fusarium oxysporum fungus infected potato samples.Journal of Bangladesh Academy of Sciences, Vol. 40, No. 1, 23-36, 2016

A Method for Particle and Gas Temperature Measurement in Laboratory-Scale, Pulverized-Coal Flames

1983 ◽  
Vol 31 (3-4) ◽  
pp. 139-153 ◽  
Author(s):  
D. W. MACKOWSKI ◽  
R. A. ALTENKIRCH ◽  
R. E. PECK ◽  
T. W. TONG
Keyword(s):  
Temperature Measurement ◽  
Pulverized Coal ◽  
Laboratory Scale ◽  
Gas Temperature

Electron Density and Gas Temperature from Line Broadening in an Argon Surface-Wave-Sustained Discharge at Atmospheric Pressure

2004 ◽  
Vol 58 (9) ◽  
pp. 1032-1037 ◽  
Author(s):  
M. Christova ◽  
E. Castaños-Martinez ◽  
M. D. Calzada ◽  
Y. Kabouzi ◽  
J. M. Luque ◽  
...  
Keyword(s):  
Surface Wave ◽  
Electron Density ◽  
Atmospheric Pressure ◽  
Gas Temperature ◽  
Line Broadening ◽  
Sustained Discharge
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