Impact of Pipe Diameter on the Discharge Process of Halon1301 in a Fire Extinguishing System with Horizontal Straight Pipe

IF 3 3区 农林科学 Q2 ECOLOGY
Ye Chen, Chenxi Zhao, Qiurui Huang, Songyang Li, Jiahui Huang, Xiaomin Ni, Jian Wang
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引用次数: 0

Abstract

In aviation fire extinguishing systems, the extinguishing agent is stored in a bottle, which is pressurized by nitrogen. When fire occurs, the agent is discharged via pipe and nozzle to the target compartment. The geometry of the pipe has a significant impact on the discharge process, and merits study. In this study of the discharge process of halon1301 using pipes of different diameters, the pressure distribution was significantly influenced by varying pipe diameter. Contributions to pressure drops through the valve/pipe/nozzle were approximately 2%, 8%, and 90%, respectively, when the pipe diameter was larger than the nozzle diameter. The contribution through the pipe increased, and the contribution through the nozzle decreased, as the pipe diameter became smaller. When the pipe diameter was decreased to the nozzle diameter, pressure drops through the valve/pipe/nozzle were 10%, 45%, and 45%, respectively; there was an increased pressure drop through the pipe. Distinctions in pressure distribution led to temperature differences; when there were more pressure drops through the nozzle, the temperature in the pipe was lower.
水平直管灭火系统中管径对卤代烷1301排放过程的影响
在航空灭火系统中,灭火剂储存在用氮气加压的瓶中。当发生火灾时,药剂通过管道和喷嘴排放到目标隔间。管道的几何形状对放电过程有重要影响,值得研究。本研究采用不同管径的管道对卤代烷1301的排放过程进行了研究,不同管径对压力分布有显著影响。当管道直径大于喷嘴直径时,阀门/管道/喷嘴对压降的贡献分别约为2%、8%和90%。随着管径的减小,通过管道的贡献增大,通过喷嘴的贡献减小。当管径减小到喷嘴直径时,通过阀门/管道/喷嘴的压降分别为10%、45%和45%;通过管道的压降增大了。压力分布的差异导致了温度的差异;通过喷嘴的压降越多,管道内的温度越低。
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
Fire-Switzerland
Fire-Switzerland Multiple-
CiteScore
3.10
自引率
15.60%
发文量
182
审稿时长
11 weeks
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