Title :
Strong current arc discharges of alternating current
Author :
Rutberg, F.G. ; Safronov, A.A. ; Goryachev, V.L.
Author_Institution :
Inst. of Problem of Electrophysics, St. Petersburg, Russia
Abstract :
Summary form only given. The review of experimental investigation results of strong current (I=10-10/sup 4/A) quasistationary alternating current discharges in high pressure gases (P/spl ges/10/sup 5/Pa) is given. Structural and alternating current are properties in vortex, turbulent flows of air, argon, nitrogen and hydrogen were investigated. The existence of two arc discharge column regimes-contracted and diffusional-was determined experimentally. Processes of arc heat exchange with the surrounding gas for these regimes were studied. Together with the volume processes, mechanisms of discharge shorting on the electrodes surface and their erosion in the spot and without spot regimes in dependence of current quantity, gas pressure and electrodes material were investigated. Powerful (N=10-10/sup 3/ kW) alternating current plasma generators were designed and created on the basis of these investigations.
Keywords :
air; arcs (electric); argon; electrodes; heat transfer; high-pressure effects; hydrogen; nitrogen; plasma production; wear; 10 A to 10 kA; 10 kW to 1 MW; 1E5 Pa; Ar; H/sub 2/; N/sub 2/; air; alternating current; alternating current plasma generators; argon; contracted column; diffusional column; discharge column regimes; discharge shorting; electrode material; heat exchange; high pressure gases; hydrogen; nitrogen; quasistationary AC arc discharges; spot regime; strong current arc discharges; turbulent flows; vortex; AC generators; Arc discharges; Argon; Electrodes; Gases; Hydrogen; Nitrogen; Plasma materials processing; Power generation; Surface discharges;
Conference_Titel :
Plasma Science, 1997. IEEE Conference Record - Abstracts., 1997 IEEE International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-3990-8
DOI :
10.1109/PLASMA.1997.605095
