Analysis of Influencing Factors on Flashover in the Long-narrow Confined Space | Zendy

Weifeng Zhao | Zendy; Ruowen Zong | Zendy; Bin Yao | Zendy; Jiaxin Gao | Zendy; Guangxuan Liao | Zendy

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Analysis of Influencing Factors on Flashover in the Long-narrow Confined Space

Author(s) -

Weifeng Zhao,

Ruowen Zong,

Bin Yao,

Jiaxin Gao,

Guangxuan Liao

Publication year - 2013

Publication title -

procedia engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.32

H-Index - 74

ISSN - 1877-7058

DOI - 10.1016/j.proeng.2013.08.062

Subject(s) - arc flash , smoke , confined space , ventilation (architecture) , materials science , environmental science , composite material , mechanics , waste management , forensic engineering , engineering , chemistry , mechanical engineering , insulator (electricity) , physics , organic chemistry

The traditional theory of flashover is not available for the application of flashover in a long-narrow confined space, especially about the critical condition of flashover occurrence. In this paper, according to the measurement of reduced-scale fire tests, the smoke layer's temperature, thickness, gas concentration and heat release rate of fire source were studied. Furthermore, the effects of fire source, opening and ventilation to the occurrence of flashover were further discussed. It is shown that the critical line of flashover for the different fuels is between 600°C and 700°C, and critical condition is different for different fuels and different openings; for the different transverse ventilation, the smoke evacuation has the best effect only when the exhaust port neat the fire is opened

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