Experiment study on fire extinguishing effects of airflow-water synergistic jet

Fanbao Chen; Bin Yao; Wanhai Guo; Guoqing Zhu; Tingting Xu; Tao Deng; Zhenhua Jiang; Ziyang Wang; Min Peng; Xinyu Wang

Case Studies in Thermal Engineering (Sep 2023)

Experiment study on fire extinguishing effects of airflow-water synergistic jet

Fanbao Chen,
Bin Yao,
Wanhai Guo,
Guoqing Zhu,
Tingting Xu,
Tao Deng,
Zhenhua Jiang,
Ziyang Wang,
Min Peng,
Xinyu Wang

Affiliations

Fanbao Chen: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China
Bin Yao: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China
Wanhai Guo: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China
Guoqing Zhu: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China; Corresponding author. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China.
Tingting Xu: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China
Tao Deng: Department of Mechanical Engineering, The University of Auckland, Auckland, 1142, New Zealand
Zhenhua Jiang: Department of Mechanical Engineering, The University of Auckland, Auckland, 1142, New Zealand
Ziyang Wang: Department of Mechanical Engineering, The University of Auckland, Auckland, 1142, New Zealand
Min Peng: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China
Xinyu Wang: Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, China; Fire Research Institute, China University of Mining and Technology, Xuzhou, 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China

Journal volume & issue: Vol. 49
p. 103367

Abstract

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As an important forest firefighting equipment in China, the 6 MF-30 pneumatic fire extinguisher has the problem of engine overheat resulting in rotational speed reduction during application. Adding water as a medium to form an airflow-water synergistic jet can improve the fire extinguishing effect. In this paper, through experiments, flow field analysis was carried out on the wood crib fire extinguishing scene and fire extinguishing effects were analyzed. It was found that the extinguisher with a rotational speed below a certain degree could not extinguish the wood crib fire. The airflow-water synergistic jet can effectively improve the fire extinguishing efficiency, greatly reduce the fire extinguishing time, and reduce the risk of reignition. The best effect is to use 4 nozzles to inject water into the outlet of the air duct, which can achieve the effect of direct injection with water pipe in the case of limited water source.

Published in Case Studies in Thermal Engineering

ISSN: 2214-157X (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/case-studies-in-thermal-engineering/

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