Spectroscopic studies of back-discharge
ABSTRACT Different forms of low current back-discharge in air at atmospheric pressure with fly ash used as a dielectric barrier are
discussed in the paper. The discharge was characterized in terms of optical emission spectra and current-voltage characteristics.
The discharge emission spectra in the wavelength range of 200÷540 nm have been measured to investigate behavior of the species
present in the fly ash when back-discharge is initiated. In normal conditions the emission spectra are dominated by atmospheric
components (molecular nitrogen, atomic oxygen and nitrogen) but atomic lines due to chemical composition of the fly ash were
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ABSTRACT: The paper presents investigations of back discharge occurring in air and flue gases produced by the process of burning of LPG (Liquefied Petroleum Gas) or charcoal at temperature ranging from 20 to 120°C. The discharge was generated between a charge-emitting multipoint electrode and a plate covered with fly-ash layer. Current–temperature characteristics were determined for this system. The aim of this work was to determine an effect of back discharge on morphology of fly-ash layer and gas composition. It was noticed that flue gases leaving the back-discharge zone contains increased amount of NOx and CO compounds.Journal of Electrostatics - J ELECTROSTAT. 01/2009; 67:291-296.