A comprehensive study on the flame propagation of the horizontal laboratory wires and flame-retardant cables at different thermal circumstances

Zhi Wang, Jian Wang*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Experiments were performed to carefully characterize the influence of ambient temperature and incident heat flux on the horizontal flame spread over wires and cables. Results show that the flame spreads evenly along the wire, and the flame spread rate slightly increases with the ambient temperature increasing with a maximum increase of 16 %. However, the change of the flame front position with time for the cable presents a piecewise linear function, and an accelerating process exists. As the incident heat flux increases, the flame spread rate increases significantly with a maximum increase of 110 % and 113 % for both single and double cable. There is no spreading flame over the cable below a lower limit of the incident heat flux. The fastest flame spread along the cable occurs when the incident heat flux causes the flame to extend to the end of the fuel instantly. Compared to the single cable, the flame spread rate of double cable is increased by 13.6%–16.2% due to the enhanced heat feedback by the flame interaction effect. The difference in flame spread behavior in this work may be ascribed to different physical configurations, chemical compositions, reaction mechanisms, and heat transfer mechanisms.

Original languageEnglish
Pages (from-to)325-333
Number of pages9
JournalPROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume139
DOIs
Publication statusPublished - Jul 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Ambient temperature
  • Flame retardant cable
  • Flame spread
  • Incident heat flux
  • Laboratory wire

Fingerprint Dive into the research topics of 'A comprehensive study on the flame propagation of the horizontal laboratory wires and flame-retardant cables at different thermal circumstances'. Together they form a unique fingerprint.

  • Cite this