A scalable twin surface dielectric barrier discharge system for pollution remediation at high gas flow rates

Abstract

In this work, a modular, multi-electrode surface dielectric barrier discharge system for the decomposition of polluted air streams at high volumetric flows, necessary for industrial applications, is designed and constructed....

Analysis of the Effects of Complex Electrode Geometries on the Energy Deposition and Electric Field Measurements of Surface Dielectric Barrier Discharges

“…This results in the discharge current forming a broad peak over the course of the discharge phase instead of the typical behavior of individual filaments. The merging of these individual filaments into a single broad peak has been observed previously in the literature [11]Figure 6b shows the resulting Lissajous figure after taking into account the voltage drop through the equivalent series resistance and the resulting linear fits for each section. The linear fit is effective for the large majority of the on-cycle of the Lissajous figure, and only at the very beginning of the discharge does the fit deviate.…”

“…Other manufacturing procedures that do not rely on adhesives have not reported a considerable equivalent series resistance. [11] This measured resistance demonstrates the importance of taking an off measurement at a lower voltage whenever possible. If there is no resistance, voltage and current should show a 90-degree phase shift while the charge and voltage should be perfectly in phase representing an ideal capacitor.…”

“…The cross-section data needed for the Bolsig+ simulation is obtained from LXCat from the Phelps database. [26], [27] The collisional radiative model used to connect the results from experiments to the simulation results garnered by Bolsig+ is described in detail in Offerhaus et al [28] and other publications [11], [29]. In brief, in an atmospheric pressure air plasma, the N2(C) state is populated through electron impact of the N2 ground state and the N2(A) state.…”

“…𝐸 per period = 𝑎(𝑉 − 𝑉 0 ) 2 [11] For the large and small rectangular electrodes, V0 was fitted to be 950 and 927 V respectively. Figure 7b shows the relationship between increasing voltage and the measured dielectric capacitance of the large rectangular electrode and the small rectangular electrode.…”

“…[4] Additionally, SDBDs can be made from flexible materials [5] , [6] , [7] allowing the electrodes to conform to more complex 3-dimensional geometries, which can be beneficial to create a constant treatment distance when the desired treatment substrate is not flat such as in the treatment of produce. [4] These advantages have resulted in SDBDs gaining interest for numerous applications, including bacteria inactivation, [8] plasma medicine, [9] flow control, [10] pollution remediation, [11] and in-package plasma processing for fresh produce decontamination. [4] , [5] , [12] Although they have several advantages, SDBDs have been less researched when compared to VDBDs.…”