Heat transfer analysis of high-pressure hydrogen storage tanks subjected to localized fire
Heat transfer analysis of high-pressure hydrogen storage tanks subjected to localized fire
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DOI：
10.1016/j.ijhydene.2012.04.058
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发表时间：
2012-09
影响因子：
7.2
通讯作者：
Jinyang Zheng;K. Ou;H. Bie;P. Xu;Yongzhi Zhao;Xianxin Liu;Yuntang He
中科院分区：
文献类型：
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作者：
Jinyang Zheng;K. Ou;H. Bie;P. Xu;Yongzhi Zhao;Xianxin Liu;Yuntang He
高压储氢罐在局部火灾作用下的安全性能受到广泛关注。在局部火灾过程中，储罐在压力释放装置（PRD）启动释放内部高压气体之前会发生降解甚至爆炸。因此，正在开发用于储罐的局部火灾测试方法。本文建立了一个三维计算流体力学模型，研究了70 MPa氢气复合储罐在局部火灾下的传热特性。分析了不同火焰冲击面积对贮箱温升和压力的影响。比较了3型和4型储罐的传热性能。结果表明，在600 s的局部火焰冲击过程中，温度和压力的上升并不明显。当储罐火焰冲击区远离PRD时，在纵向上，内部氢的对流换热可能比罐壁的导热更强烈。此外，来自局部火灾的热量在3型储罐中比在4型储罐中传递得更快。
Safety performance of high-pressure hydrogen storage tanks under localized fire exposure has drawn extensive attention. During the localized fire, the tank would be degraded and even burst before pressure relief device (PRD) activates to release internal high-pressure gas. Therefore, a localized fire test method for the tanks is being developed. In this paper, a three-dimensional computational fluid dynamics model is developed to investigate the heat transfer characteristics of 70MPa hydrogen composite tanks subjected to localized fire. The effects of different flame impingement areas on temperature and pressure rises of the tank are analyzed. Heat transfer performances of type 3 and type 4 tanks are compared. The results show that the temperature and pressure rises are not significant during the 600s localized flame impingement process. When the flame impingement area of the tank is far from PRD, convective heat transfer of internal hydrogen may be more intense than heat conduction of tank wall in the longitudinal direction. In addition, the heat from localized fire can be transmitted faster in type 3 tanks than in type 4 tanks.