Journal ArticleDOI
Influence of humidity on current waveform and light emission of a low-frequency discharge controlled by a dielectric barrier
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In this paper, the effect of humidity on a silent discharge in air has been investigated using a point to plane configuration and with the plane electrode coated by a silicone rubber plate alone or under a polypropylene film.Abstract:
The aim of this work is to determine the effect of humidity on a silent discharge in air. A point to plane configuration has been used. Current and emission spectra of the discharge have been recorded in dry and humid air for short and long inter-electrode gaps and with the plane electrode coated by a silicone rubber plate alone or under a polypropylene film. Results show the typical corona discharge regimes. For a long gap, humidity decreases the number of breakdown streamer pulses. For a short gap, the behavior observed depends on the surface conduction of the dielectric in contact with the discharge. These results show that the presence of humidity in the discharge cell not only modifies the gas but also the surface states of the dielectrics coating the electrodes. The surface charge decay appears as a major parameter, since it is related to the local field value which results from the applied field and the reverse field induced by charge accumulation during previous discharges.read more
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Journal ArticleDOI
Effects of ambient humidity and temperature on partial discharge characteristics of conventional and nanocomposite enameled magnet wires
Yusuke Kikuchi,T. Murata,Y. Uozumi,Naoyuki Fukumoto,Masayoshi Nagata,Yasuo Wakimoto,Tetsuo Yoshimitsu +6 more
TL;DR: In this paper, the effects of ambient humidity and temperature on partial discharge (PD) characteristics in twisted pairs with conventional and nanocomposite enameled magnet wires have been investigated.
Book ChapterDOI
Elementary Chemical and Physical Phenomena in Electrical Discharge Plasma in Gas–Liquid Environments and in Liquids
Journal ArticleDOI
In-situ regeneration of Au nanocatalysts by atmospheric-pressure air plasma: Significant contribution of water vapor
TL;DR: In this paper, a simple and effective technique of atmospheric-pressure cold plasma of humid air is explored for in-situ regeneration of Au nanocatalysts for CO oxidation.
Journal ArticleDOI
Effect of temperature and relative humidity on NOX removal by dielectric barrier discharge with acetylene
Tao Wang,Baomin Sun +1 more
TL;DR: In this article, the authors investigated NO and NOX removal using dielectric barrier discharge (DBD) plasma and found that the NO removal efficiency increased with an increasing temperature, and that the main reason was that the high temperature increased the dissociation of C2H2, N2 and O2, and the reaction rates involving HO2, CH2 and C 2H radicals.
Journal ArticleDOI
Electron characterization in weakly ionized collisional plasmas: from principles to techniques
TL;DR: Weakly ionized plasmas at or near 1 atm pressure, or atmospheric pressure, have received increasing attention due to their scientific significance and potential for use in a variety of applications as discussed by the authors.
References
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Journal ArticleDOI
Modeling and applications of silent discharge plasmas
TL;DR: In this paper, the nature of the silent discharge (dielectric barrier discharge) is reviewed and theoretical models for describing its discharge physics and ensuing plasma chemistry are presented, and the phenomena leading to gas breakdown in such electrode configurations at about atmospheric pressure are discussed.
Journal ArticleDOI
The mechanism of the long spark formation
TL;DR: In this article, the authors present the state of the art of the research on the physics of long sparks and present both the experimental results and the theoretical models which have been obtained for each single phase.
Journal ArticleDOI
Mass‐Spectrometric Studies of Corona Discharges in Air at Atmospheric Pressures
TL;DR: In this paper, it is argued that hydride formation by the primary ions and possibly charge exchange reaction with water molecules followed by proton transfer reactions are the mechanisms by which these clusters are produced.
Journal ArticleDOI
A Decay Process of Surface Electric Charges across Poyethylene Film
Journal ArticleDOI
Theoretical Evaluation of Peek's Law
TL;DR: A theoretical evaluation for Peek's law which yields the corona onset gradient is made in air for positive wire/cylinder and positive point/plane geometries as discussed by the authors, where the physical and geometrical parameters used in Meek's criterion take into account the variation of apparent ionization coefficient?1 of air with humidity, pressure, and temperature and the curvature radius R of the rod tip (or the wire diameter D) A single analytic integrable expression for?1/P which may be used for any value of the reduced field E/p.
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