主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2024, Vol. 43 ›› Issue (3): 292-298.

• • 上一篇    下一篇

自然通风条件下的两连接腔室中氢气泄漏试验研究

侯思仪1, 刘洋1, 黄中伟2, 黄一鸣1   

  1. （1. 江西理工大学 土木与测绘工程学院，江西 赣州 341000；2. 建筑安全与环境国家重点实验室，北京 100013）
  • 出版日期:2024-03-15 发布日期:2024-03-15
  • 作者简介:侯思仪（1999- ），女，湖南株洲人，江西理工大学土木与测绘工程学院硕士研究生，主要从事新能源与能效控制、环境流体力学研究，江西省赣州市南康区客家大道1958号，341000。
  • 基金资助:
    基金项目：国家自然科学基金资助项目（52068031）；江西省自然科学基金（20202BABL204062）

Experimental study of leaked hydrogen gas in two connected chambers under natural ventilation

Hou Siyi1, Liu Yang1, Huang Zhongwei2, Huang Yiming1   

  1. (1. School of civil and Surveying & Mapping Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou 341000, China; 2. State Key Laboratory of Building Safety and Environment, China Academy of Building Research, Beijing 100013, China)
  • Online:2024-03-15 Published:2024-03-15

摘要： 通过理论模型预测氢在自然通风条件的两连接腔室中缓慢泄漏而产生的氢-空气浮力射流。假设氢-空气混合物是线性混合类型，即密度仅是浓度的函数，通过三大守恒和伯努利方程得到并转化为非线性方程组，并进行了数值求解和试验验证。结果表明：两连接腔室中的一个腔室发生氢气泄漏时，连通口与泄漏区域区外侧通风口的相对位置对氢气分布的影响较大。增大中间连通口与泄漏区外侧通风口之间的距离和通风口面积都可以降低空间中的密度并提升高浓度出现的位置。分层高度与泄漏源高度呈正相关。本研究预测了氢气在自然通风的连通空间中的分散机制，从氢气风险控制的角度确定高浓度出现的位置，更好地为储氢设备的安全运行提供理论支持。

关键词: 氢气泄漏, 连通腔室, 浮力羽流, 泄漏点高度, 通风口

Abstract: A theoretical model is used to predict the hydrogen-air buoyancy jet generated by the slow leakage of hydrogen in two connected chambers with natural ventilation. The results show that when hydrogen leaks from one of the two connecting chambers, the relative position of the connecting port and the vent outside the leakage area has a greater impact on the hydrogen distribution. Increasing the distance between the central communication opening and the vents outside the leakage area, as well as increasing the vent area, can reduce density in the space and increase the location of high concentrations. The layering height and the change in leakage source height are positively correlated. The dispersion mechanism of hydrogen in naturally ventilated connected spaces is predicted in this study. From the perspective of hydrogen risk control, the locations where high concentrations occur are determined, and theoretical support for the safe operation of hydrogen storage equipment is better provided.

Key words: hydrogen leakage, connected chambers, buoyant plumes, leakage height, opening