NDLI: Hydrogen heating in the discharge chamber of powerful electric discharge launcher

Content Provider	IEEE Xplore Digital Library
Author	Rutberg, Ph.G. Bogomaz, A.A. Budin, A.V. Kolikov, V.A. Kuprin, A.G.
Copyright Year	1997
Description	Author affiliation: Inst. of Problems of Electrophys., Acad. of Sci., St. Petersburg, Russia (Rutberg, Ph.G.)
Abstract	Summary form only given, as follows. Results of the discharge chamber of an electric discharge launcher testing, aiming at a heat transfer study is presented. Test conditions are: initial H/sub 2/ pressure-5-40 MPa, discharge chamber volume-1400 cm/sup 3/, current /spl les/1.5 MA, energy stored-1.3 MJ, circuit own frequency-1 kHz. To simulate gas heating in the EDL discharge chamber and to use high speed camera, a diagnostic discharge chamber was made. Based on the arc dynamics study in the diagnostic discharge chamber, temperature and conductivity estimations of the arc channel were carried out for the EDL chamber. Measured pressure 200 MPa and conductivity 230 (/spl Omega//spl times/cm)/sup -1/ correspond to temperatures of (3.3-3.5)/spl times/10/sup 4/ K and of (2.3-2.4)/spl times/10/sup 4/ K for the arcs, burning respectively in copper vapor and in H/sub 2/. Real temperature seems to lie between these two values. Since the pressure equilibrium in the volume was reached, acoustic oscillations may be used to evaluate gas temperature. Moving arcs cause shock waves registered by pressure transducers, placed along discharge length, and by high speed camera. Arc-to-gas energy transfer efficiency rises along with initial H/sub 2/ pressure increase and reaches 90% for 40 MPa. Both shock wave propagation and arc radiation absorption contribute to this rise.
File Size	99708
File Format	PDF
ISBN	0780339908
ISSN	07309244
DOI	10.1109/PLASMA.1997.605165
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hydrogen Resistance heating Temperature Circuit testing Cameras Conductivity Shock waves Heat transfer Frequency Circuit simulation
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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