Development of a dimensionless parameter for characterization of dielectric barrier discharge devices with respect to geometrical features

Abstract

Non-thermal plasma (NTP) devices produce excited and radical species that have higher energy levels than their ground state and are utilized for various applications. There are various types of NTP devices, with dielectric barrier discharge (DBD) reactors being widely used. These DBD devices vary in geometrical configuration and operating parameters, making a comparison of their performance in terms of discharge power characteristics difficult. Therefore, this study proposes a dimensionless parameter that is related to the geometrical features, and is a function of the discharge power with respect to the frequency, voltage, and capacitance of a DBD. The dimensionless parameter, in the form of a ratio of the discharge energy per cycle to the gap capacitive energy, will be useful for engineers and designers to compare the energy characteristics of devices systematically, and could also be used for scaling up DBD devices. From the results in this experiment and from the literature, different DBD devices are categorized into three separate groups according to different levels of the energy ratio. The larger DBD devices have lower energy ratios due to their lower estimated surface discharge areas and capacitive reactance. Therefore, the devices can be categorized according to the energy ratio due to the effects of the geometrical features of the DBD devices, since it affects the surface discharge area and capacitance of the DBD. The DBD devices are also categorized into three separate groups using the Kriegseis factor, but the categorization is different from that of the energy ratio.

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

“…These advantages make these reactors feasible for pollutant abatement, such as CO, NO x and VOCs, as well as for ozone generation [1]. However, since the DBD reactors vary in geometric configuration and operating parameters (discharge characteristics depend on the gas composition, type of dielectric material and operating conditions of voltage and frequency), the comparison of their performance in terms of discharge power characteristics is really difficult [7,8].…”

Simultaneous Treatment of Both Sides of the Polymer with a Conical-Shaped Atmospheric Pressure Plasma Jet

“…It is worth mentioning that this process can be carried out continuously in a line of production or individually [ 13 , 14 ]. Among the NTAPP devices, dielectric barrier discharge (DBD) is the most widely used [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. A significant advantage of DBD over other devices that generate electrical discharges is the higher electron density induced by micro-discharges caused by a large number of tiny current filaments that pass through the dielectric material covering one or both electrodes [ 21 , 22 ].…”

On the Effect of Non-Thermal Atmospheric Pressure Plasma Treatment on the Properties of PET Film

“…Basic electrical parameters allow not only for control of the discharge; they are also useful for determining discharge modes [19,20]. Currently, there is significant progress in the development of new concepts of high-voltage power supplies for DBD discharge generation, leading to improved homogeneity of the plasma or energy distribution [21,22].…”