Mechanisms responsible for arc cooling in different gases in turbulent nozzle flow

Y. Guo, H. Zhang, Y. Yao, Q. Zhang, J. D. Yan*

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

A high voltage gas blast circuit breaker relies on the high speed gas flow in a nozzle to remove the energy due to Ohmic heating at high current and to provide strong arc cooling during the current zero period to interrupt a fault current. The physical mechanisms that are responsible for the hugely di erent arc cooling capabilities of two gases (SF6 and air) are studied in the present work and important gas material properties controlling the cooling strength identified.

Original languageEnglish
Pages234-240
Number of pages7
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event22nd Symposium on Physics of Switching Arc, 2017 - Nove Mesto na Morave, Czech Republic
Duration: 4 Sept 20178 Sept 2017

Conference

Conference22nd Symposium on Physics of Switching Arc, 2017
Country/TerritoryCzech Republic
CityNove Mesto na Morave
Period4/09/178/09/17

Keywords

  • SF6 alternative gases
  • SF6 replacement
  • Switching arc.

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