The experimental study of compressed air foam produced by 2-bromo-3,3,3-trifluoro-propene and air in suppression of 1 m2 n-pentane oil fire

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-02-16 DOI:10.1016/j.csite.2025.105900

Tao Chen , Junyi Zhang , Lishuai Jing , Yi Li , Qihang Yue , Peng Zhang , Biao Zhou

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Abstract

In this paper, an experimental model of a 1 m² tank fire was constructed to investigate the coupling mechanism between 2-bromo-3,3,3-trifluoro-propene (BTP) and the compressed air foam system (CAFS), and to optimize the extinguishing performance of the combination of extinguishing agents by controlling the flow rate of BTP. The results demonstrated that the combination of compressed air foam (CAF) and BTP significantly enhances the foam's performance on low-boiling point flammable liquids. It is found that, in Test No.3, the fire control time of the aqueous film-forming foam (AFFF) and BTP was about two times higher than the extinguishing time of CAF with the same supply strength. In Test No.2, the fire control and extinguishing time of the alcohol-resistant aqueous film-forming foam (AFFF/AR) and BTP was about 20 % higher than that of CAF. After the formula was calculated, it gave the BTP gasification rates range from 0.26 to 0.73, and the volume share of BTP vapor ranges from 12.77 % to 53.77 %. And the BTP vapor percentage in the foam reaches a certain value, the physical and chemical extinguishing effects are coupled. The effectiveness of fire suppression is increased. This study offers a novel technical approach for the low-boiling point flammable liquid fires, carrying important implications for engineering applications.

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本文构建了一个 1 m2 储罐火灾的实验模型，以研究 2-溴-3,3,3-三氟丙烯（BTP）与压缩空气泡沫系统（CAFS）之间的耦合机理，并通过控制 BTP 的流量优化灭火剂组合的灭火性能。结果表明，压缩空气泡沫（CAF）和 BTP 的组合能显著提高泡沫对低沸点易燃液体的灭火性能。结果发现，在 3 号试验中，水成膜泡沫（AFFF）和 BTP 的灭火时间比相同供应强度的 CAF 的灭火时间高出约两倍。在 2 号试验中，耐酒精水成膜泡沫（AFFF/AR）和 BTP 的控火和灭火时间比 CAF 高出约 20%。经过公式计算，BTP 的气化率范围为 0.26 至 0.73，BTP 蒸汽的体积比例范围为 12.77 % 至 53.77 %。当 BTP 蒸汽在泡沫中的比例达到一定值时，物理灭火和化学灭火的效果就会耦合。灭火效果得到提高。这项研究为低沸点易燃液体火灾提供了一种新的技术方法，对工程应用具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.