The inhibitory combustion reaction performance and tail gas analysis of composite ultra-fine dry powder extinguishing agent containing different additives

Guo, Xinxin; Pan, Xuhai; Zhang, Lijing; Hua, Min; Li, Hangchen; Li, Shunchao; Zhang, Han

doi:10.1016/j.jlp.2020.104153

Cited by 10 publications

(2 citation statements)

References 18 publications

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“…3 Ultra-fine powder extinguishing agent (UPEA) has the advantages of high fire extinguishing efficiency, environmental protection, light weight, etc. 4,5 UPEA is one of the most promising agents for future applications in aircraft fire extinguishing systems. 6,7…”

Section: Introductionmentioning

confidence: 99%

“…3 Ultrafine powder extinguishing agent (UPEA) has the advantages of high fire extinguishing efficiency, environmental protection, light weight, etc. 4,5 UPEA is one of the most promising agents for future applications in aircraft fire extinguishing systems. 6,7 The UPEA diffuses in the air to form a certain concentration of aerosol cloud to contact the flame, resulting in a fully submerged fire extinguishing state, which shows extremely high fire extinguishing efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of ultra-fine powder extinguishing agent injection process

Zhou

Shi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The process of pressurized injection of ultra-fine powder extinguishing agents (UPEA) and the effect of injection from the nozzle directly affects the spatial dispersion characteristics and the effectiveness of fire extinguishing. Combining CFD simulations and experimental measurements, the UPEA pressurized injection process and injection effects were investigated. The transient process of injection is divided into three stages, initial injection stage, steady injection stage, and post-injection stage. The post-injection stage is divided into a slow decay process and a residual gas release process. Investigating the effect of different filling conditions on the effectiveness of particle injection. In the stable injection stage, the higher the filling ratio, the lower the mass flow of UPEA particles at the same filling pressure. At the same filling ratio, the higher the filling pressure, the higher the mass flow of UPEA particles. The maximum mass flow of the UPEA particles was 5.38 kg/s at a filling ratio of 20% and a filling pressure of 3.6 MPa. The steady injection time is mainly influenced by the particle filling ratio.

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