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<p>A type III hydrogen storage system typically refers to a method of storing hydrogen where the hydrogen is contained within the composite material, such as a carbon fiber reinforced polymer (CFRP) or a glass fiber reinforced polymer (GFRP) vessel. Type III storage systems are advantageous because they offer a good balance between weight, volume, and storage capacity. This research investigates the structural, thermal, and life cycle assessment of hydrogen cylinders under varying filling pressures such as 20&#xa0;MPa, 25&#xa0;MPa, 30&#xa0;MPa, 35&#xa0;MPa, 40&#xa0;MPa, and 45&#xa0;MPa and environmental temperatures such as 250&#xa0;K, 200&#xa0;K, 320&#xa0;K, and 350&#xa0;K. This study investigates the application of polytetrafluoroethylene (PTFE) to mitigate hydrogen embrittlement. Also, by incorporating PTFE and composite materials, the aluminium liner thickness in hydrogen storage cylinders has been significantly reduced, leading to an overall weight reduction of the cylinder for UAV application. Structural analysis reveals that filling pressures between 25 and 35&#xa0;MPa provide optimal structural stability, ensuring safe containment of hydrogen within composite material cylinders. Meanwhile, thermal analysis identifies a permissible working temperature up to 350 K, indicating robust thermal resilience under operating conditions. The current hydrogen cylinder technology faces a significant challenge due to its limited fuelling span, necessitating frequent refills and hindering operational efficiency, particularly in transportation applications. According to the ISO 11439 standard, the life cycle assessment of hydrogen storage systems has been investigated. Specifically, in the pressure ranges from 25 to 35&#xa0;MPa as optimal for minimizing structural damage and extending cylinder lifespan.</p>

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Failure Analysis of PTFE Coted Type III Hydrogen Storage Cylinders with Varying Filling Pressures

  • 期刊论文

  • 发表日期：

    2025年9月17日

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  • B. Kirubadurai,
  • R. Jaganraj,
  • M. VinothKumar,
  • G. Jegadeeswari

摘要

A type III hydrogen storage system typically refers to a method of storing hydrogen where the hydrogen is contained within the composite material, such as a carbon fiber reinforced polymer (CFRP) or a glass fiber reinforced polymer (GFRP) vessel. Type III storage systems are advantageous because they offer a good balance between weight, volume, and storage capacity. This research investigates the structural, thermal, and life cycle assessment of hydrogen cylinders under varying filling pressures such as 20 MPa, 25 MPa, 30 MPa, 35 MPa, 40 MPa, and 45 MPa and environmental temperatures such as 250 K, 200 K, 320 K, and 350 K. This study investigates the application of polytetrafluoroethylene (PTFE) to mitigate hydrogen embrittlement. Also, by incorporating PTFE and composite materials, the aluminium liner thickness in hydrogen storage cylinders has been significantly reduced, leading to an overall weight reduction of the cylinder for UAV application. Structural analysis reveals that filling pressures between 25 and 35 MPa provide optimal structural stability, ensuring safe containment of hydrogen within composite material cylinders. Meanwhile, thermal analysis identifies a permissible working temperature up to 350 K, indicating robust thermal resilience under operating conditions. The current hydrogen cylinder technology faces a significant challenge due to its limited fuelling span, necessitating frequent refills and hindering operational efficiency, particularly in transportation applications. According to the ISO 11439 standard, the life cycle assessment of hydrogen storage systems has been investigated. Specifically, in the pressure ranges from 25 to 35 MPa as optimal for minimizing structural damage and extending cylinder lifespan.