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Arc voltage measurements of ultrahigh pressure nitrogen Arcs in cylindrical tubes

Arc voltage measurements of ultrahigh pressure nitrogen Arcs in cylindrical tubes

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Sammendrag
This paper focuses on the arc voltage measurements of electrical arcs burning inside cylindrical tubes in nitrogen at different filling pressures from atmospheric and up to 80 bar. To investigate the effect of ablation, both nonablating ceramic tubes (alumina) and ablating polytetrafluoroethylene (PTFE) tubes with different inner diameters have been investigated. Arc currents of 150 A at 350 Hz have been used throughout the experiment. It has been observed that, at atmospheric pressure, there is an inverse relationship between arc voltage and inner tube diameter. At a high filling pressure such a behaviour is not obvious. The arc voltage instability increases with increasing filling pressure. The arc voltage of arcs burning inside ceramic and PTFE tubes is found to be similar in the investigated current and pressure regions.
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • Norges teknisk-naturvitenskapelige universitet
  • SINTEF Energi AS / Elkraftteknologi
År
2018
Forlag
University of Belgrade
Bok
Proceedings of the XXIInd International Conference on Gas Discharges and their Applications, 2nd-7nd September 2018, Novi Sad, Serbia
ISBN
0-000-00001-9