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Arc voltage measurements of ultrahigh pressure nitrogen Arcs in cylindrical tubes

Abstract

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.

Category

Chapter

Language

English

Author(s)

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Energy Research / Elkraftteknologi

Year

2018

Publisher

University of Belgrade

Book

Proceedings of the XXIInd International Conference on Gas Discharges and their Applications, 2nd-7nd September 2018, Novi Sad, Serbia

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