Citation

Luo Z, Wang X, Wang T, Meng Z, Wang Z. China Saf. Sci. J. 2022; 32(10): 63-68.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.10.2237

PMID

unavailable

Abstract

In order to improve the fire extinguishing efficiency of water mist, the fire extinguishing performance and synergistic fire extinguishing effect of water mist, inert gas nitrogen (N2 ) and carbon dioxide (CO2 ) were studied by experimental study and mathematical model analysis. The single and compound fire extinguishing effects of water mist and inert gas were tested by a self⁃designed cup burner test device, and a mathematical model of synergy factor suitable for water mist and inert gas was established. The results show that the minimum volume fractions of N2 ethanol⁃extinguishing fire and heptane⁃extinguishing fire were 34. 92% and 31. 97%, respectively, and that of CO2 ethanol⁃extinguishing fire and heptane⁃extinguishing fire were 24. 37% and 22. 15%, respectively. From the perspective of synergistic effect, there is a positive synergistic fire extinguishing effect between water mist and N2, but the synergistic fire extinguishing effect with CO2 is not obvious, and there is no synergistic fire extinguishing effect between N2 and CO2. © 2022 China Safety Science Journal. All rights reserved.

Language: zh