Energy Efficiency of Planar Discharge for Industrial Applications

Kelar, Jakub; Čech, Ján; Slavíček, Pavel

doi:10.14311/ap.2015.55.0109

Cited by 11 publications

(10 citation statements)

References 11 publications

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“…The energy efficiency was >90% in the whole range of the applied power. These values are in good agreement with those of Kelar et al, where the nature of possible errors was discussed also.…”

Section: Resultssupporting

confidence: 91%

Areal homogeneity verification of plasma generated by diffuse coplanar surface barrier discharge in ambient air at atmospheric pressure

Štěpánová

Kelar

Galmiz

et al. 2017

Contrib. Plasma Phys

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This paper deals with an optical emission spectroscopy study of a diffuse coplanar surface barrier discharge (DCSBD) in air at atmospheric pressure. The main aim of this study was to verify the areal homogeneity of the generated plasma, which is important for many applications like treatment of nonwoven fabrics, glass, metals, polymers, foils, and so on. Optical emission spectra of DCSBD plasma in air were measured for three different frequencies (15, 30, and 50 kHz) of the applied voltage. Comparison of the calculated rotational and vibrational temperatures was carried out, and areal homogeneity of plasma was proved. Electrical parameters of discharge such as the plasma power using the area of the Lissajous figures and energy transfer efficiency to the discharge were also investigated. The effective thickness of plasma layer as a function of the input power was measured.

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Section: Resultssupporting

confidence: 91%

Areal homogeneity verification of plasma generated by diffuse coplanar surface barrier discharge in ambient air at atmospheric pressure

Štěpánová

Kelar

Galmiz

et al. 2017

Contrib. Plasma Phys

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“…The coplanar DBD is made of a system of coplanar strip electrodes that are covered by a ceramic and plasma is created in the gas on the opposite side of the ceramic. The neighboring strip electrodes are charged with opposite polarity, which enables to cover a large area of the ceramic by macroscopically homogeneous plasma [61][62][63]. Since plasma layer is only 0.3-mm thick, the density of the power delivered to the discharge is high and the discharge is expected to generate high concentration of reactive radicals.…”

Section: Surface Dbd In Water Vapormentioning

confidence: 99%

Laser-Induced Fluorescence of Hydroxyl (OH) Radical in Cold Atmospheric Discharges

Voráč¹,

Dvořák²,

Mrkvičková³

2018

Photon Counting - Fundamentals and Applications

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The application of laser-induced fluorescence (LIF) to measurement of absolute concentration of hydroxyl radicals in cold atmospheric discharges is described. Though only the case of OH is presented, the method can be directly applied to other molecules as well. Starting from the rate equations for the LIF process, the main formulas for two-and multilevel excitation scheme are derived. It is also shown how to use partially saturated LIF in practice, enhancing the signal-to-noise ratio. Practical tips for automating the data evaluation are given, allowing processing large data sets, particularly suitable for planar measurements. Gas temperature estimation from fluorescence on different rotational absorption lines is shown as an attractive method for obtaining temperature maps with high spatial resolution. The important aspects of calibration are discussed, particularly the overlap of the laser line with the selected absorption line and the measurement of the Rayleigh scattering for sensitivity calibration, together with the common sources of errors. The application of OH(A, v 0 =0 X, v 00 = 0) excitation scheme to the effluent of atmospheric pressure plasma jet ignited in argon and of OH(A, v 0 =1 X, v 00 = 0) to the plasma of coplanar surface barrier discharge in air and in water vapor is shown.

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“…The bene ts of surface discharges are especially prominent with the treatment of work pieces with very at surfaces and large surface areas (Černák et al 2009). That way, many industrial applications for plasma treatments can be arranged with great energy e ciency (Kelar et al 2015) and at high processing speeds (Černák et al 2011).…”

Section: Introductionmentioning

confidence: 99%

An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

Dahle

Pilko

Žigon

et al. 2021

Preprint

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The development of a simple surface barrier discharge plasma device is presented to enable more widespread access to and utilization of plasma technology. The application of the plasma device was demonstrated for pretreatment of wood prior to application of protective coatings for outdoor usage. The coatings' overall performance was increased, showing a reduction or absence of cracking due to weathering on plasma-pretreated specimens. Moreover, after ten months of outdoor weathering, the plasma-pretreated specimens showed fewer infections with biotic factors and improved adhesion performance in cross-cut tests, while the surface gloss performed independently from plasma pretreatment. In contrast to that, plasma-pretreated specimens were slightly more prone to discoloration due to outdoor weathering, whereas the plasma pretreatment did not impact the initial color after coating application.

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Energy Efficiency of Planar Discharge for Industrial Applications

Cited by 11 publications

References 11 publications

Areal homogeneity verification of plasma generated by diffuse coplanar surface barrier discharge in ambient air at atmospheric pressure

Areal homogeneity verification of plasma generated by diffuse coplanar surface barrier discharge in ambient air at atmospheric pressure

Laser-Induced Fluorescence of Hydroxyl (OH) Radical in Cold Atmospheric Discharges

An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

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