Fire Safety Journal ( IF 3.1 ) Pub Date : 2021-04-17 , DOI: 10.1016/j.firesaf.2021.103356 Aitor Amatriain , Gonzalo Rubio , Ignacio Parra , Eusebio Valero , David Andreu , Pedro Manuel Martín
In this work the discharge process of a fire extinguishing agent through a pipe is studied. Particularly, Halon 1301 is considered, an halocarbon that is introduced in bottles pressurized by nitrogen. Nitrogen dissolves in Halon at high pressure, so the bottle contains a multicomponent liquid. Moreover, the discharge process typically entails phase change leading to three different discharge steps with complex governing equations. Therefore the driven forces of each case are analysed and a simplified model is proposed. The results given by the developed model are validated with numerical and experimental data provided by NASA [D.G. Elliott et al. Flow of Nitrogen-Pressurized Halon 1301 in Fire Extinguishing Systems, JPL Publication 84 (1984) [15]], consisting of a discharge of Halon 1301 and nitrogen mixture through a nozzle of reduced length. Finally, numerical results corresponding to a case of practical application are shown, and a parametric study is presented.
中文翻译:
灭火系统中氮气加压哈龙流的数学模型
在这项工作中,研究了灭火剂通过管道的排放过程。特别地,考虑到Halon 1301,这是一种在氮气加压下引入瓶中的卤化碳。氮气在高压下溶解在哈龙中,因此瓶子中包含多组分液体。而且,放电过程通常需要相变,导致具有复杂控制方程的三个不同的放电步骤。因此,分析了每种情况的驱动力并提出了简化模型。由美国国家航空航天局提供的数值和实验数据验证了所开发模型给出的结果[DG Elliott等。氮气加压的哈龙1301在灭火系统中的流动,JPL出版物84(1984)[15]],由通过减小长度的喷嘴排放哈龙1301和氮气混合物组成。