NDLI: Effect of relative humidity on electron distribution and ozone production by DC coronas in air

Content Provider	IEEE Xplore Digital Library
Author	Junhong Chen Pengxiang Wang
Copyright Year	2004
Description	Author affiliation: Dept. of Mech. Eng., Wisconsin Univ., Milwaukee, WI, USA (Junhong Chen; Pengxiang Wang)
Abstract	Summary form only given. A numerical model of electron distribution and ozone production in clean and humid air by DC corona discharges from a thin wire is presented. The model is based on the prior models of ozone production by DC coronas in dry air, with modifications to incorporate the effect of water vapor on the electrical characteristics and the chemistry of the discharge. The water vapor present in air affects the corona initiation field strength, the mass and the mobility of ions, and the plasma chemistry (e.g., production of OH radicals). The distribution of electron number density is obtained by solving coupled continuity equations for charge carriers and the Maxwell's equation. The electron kinetic energy distribution is solved from the Boltzmann equation. The electron distribution data is then combined with the chemical mechanisms of ozone formation in humid air and the transport phenomenon to obtain the rate of ozone production. The predicted ozone production rates are compared with experimental data available in the literature. The effect of relative humidity on the electron distribution and ozone production is examined, together with the effects of discharge polarity, discharge geometry (flow direction and wire size), operating current, air temperature and flows residence time.
Sponsorship	Plasma Sci. and Applications Committee of the IEEE Nuclear and Plasma Sci. Soc
File Size	74684
File Format	PDF
ISBN	0780383346
ISSN	07309244
DOI	10.1109/PLASMA.2004.1340196
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Humidity Electrons Production Corona Wire Plasma chemistry Maxwell equations Numerical models Water Electric variables
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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