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作者:

Miao, Yang (Miao, Yang.) | Jia, Chenghao (Jia, Chenghao.) | Hua, Yang (Hua, Yang.) | Zhang, Xiaolu (Zhang, Xiaolu.) | Sun, Lejia (Sun, Lejia.) | Huang, Gang (Huang, Gang.) | Liu, Haibin (Liu, Haibin.) (学者:刘海滨)

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EI Scopus SCIE

摘要:

This study aims to figure out some safety issues by investigating the roof shape of infrastructures such as zerocarbon huts that people are already using to prevent dangerous hydrogen clouds from building up in places with little airflow when there is a leak. We designed three different obstacles. The horizontal and vertical concentration distributions of the free-jet hydrogen cloud when encountering different obstacles were determined by concentration measurements. In addition, the diffusion characteristics of the hydrogen jet in the presence of obstacles were investigated by using the Background Oriented Schlieren (BOS). The results show that there is a linear relationship between the measured axial concentration of the hydrogen jet and the leakage parameters at lower flow rates. The measured radial concentration of the hydrogen jet shows a "Gaussian-like" distribution when encountering a flat plate obstacle, a "W" distribution when encountering a flat plate obstacle with sidewalls, and a "W-like" distribution when encountering a dome-type obstacle. A method of inverting the radial concentration distribution of the hydrogen jet using the BOS is also proposed, and the error between the theoretical and experimental values is calculated to be 3.81 %. This study stresses the significance of geometric and dimensional parameters on hydrogen leakage characteristics and, as a result, provides insights into developing performance standards for the availability and reliability of safety-critical systems.

关键词:

Accidental leak BOS Obstacle shape Concentration measurement Hydrogen-electric coupling

作者机构:

  • [ 1 ] [Miao, Yang]Beijing Univ Technol, Coll Mech & Energy Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Jia, Chenghao]Beijing Univ Technol, Coll Mech & Energy Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Xiaolu]Beijing Univ Technol, Coll Mech & Energy Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Liu, Haibin]Beijing Univ Technol, Coll Mech & Energy Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Miao, Yang]Beijing Univ Technol, Beijing Key Lab Adv Mfg Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Hua, Yang]Xinxing Cathay Int Intelligent Equipment Technol R, Beijing, Peoples R China
  • [ 7 ] [Sun, Lejia]Xidian Univ, Sch Microelect, Key Lab Wide Band Gap Semicond Mat & Devices, Xian 710071, Peoples R China
  • [ 8 ] [Huang, Gang]China Astronaut Res & Training Ctr, Beijing 100094, Peoples R China

通讯作者信息:

  • 刘海滨

    [Liu, Haibin]Beijing Univ Technol, Coll Mech & Energy Engn, Beijing 100124, Peoples R China;;[Huang, Gang]China Astronaut Res & Training Ctr, Beijing 100094, Peoples R China

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来源 :

JOURNAL OF ENERGY STORAGE

ISSN: 2352-152X

年份: 2024

卷: 83

9 . 4 0 0

JCR@2022

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 13

ESI高被引论文在榜: 0 展开所有

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