• Title/Summary/Keyword: 수소용기

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A Study on the Deformation Characteristics of the TYPE 1 42.6 Liter Hydrogen Storage Vessel with Notches (노치가 형성된 TYPE 1 42.6리터 수소저장용기의 거동 특성 연구)

  • Seunghyun Cho;Ha Young Choi;Sung Kwang Byon;Jung Hee Seo;Oh Hyun Chung;MinJoo Kim;Min Kyung Lee
    • Journal of the Korean Institute of Gas
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    • v.28 no.3
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    • pp.42-52
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    • 2024

  • In order to investigate the deformation and stress characteristics of the gas pressure applied to the 42.6-liter small hydrogen gas storage vessel with a notch, the von Mises stress generated in the hydrogen gas storage vessel was interpreted using the finite element method. The stress-strain characteristics and fatigue strength of the SA372 J Grade material applied to the analysis were measured through the fatigue-tensile test. In addition, the gas pressure was considered in 30 charging cycles, and it was assumed that the notch was located in two areas, the shoulder and the center of the storage vessel. The maximum VMS occurs at the longitudinal notch of the inner surface of the storage vessel, and VMS generated in the longitudinal notch of the inner surface was 1.02 times the permanent life strength of 550 MPa, and 0.87 times the yield strength of 650 MPa occurred. On the other hand, in the case of the circumferential notch, VMS below the permanent life strength occurred both inside and outside the storage vessel.

  • https://doi.org/10.7842/kigas.2024.28.3.42 인용 PDF

A Study on the Metal Wire for Hoop Wrapping of Type 2 High Pressure Tank (Type 2 고압용기 권선용 금속선재에 관한 연구)

  • HAN, JINMOOK;CHOI, SOOKWANG;LEE, SUNGHEE;CHO, KYUNGCHUL;HWANG, CHULMIN;JUNG, YOUNGUAN
    • Journal of Hydrogen and New Energy
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    • v.30 no.4
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    • pp.338-346
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    • 2019

  • During last years, hydrogen refueling infrastructure test and devices research for hydrogen station presented a significant growth consisting of the commercialization of fuel cell electric vehicles (FCEVs). However, we still have many challenges for making commercial hydrogen stations such as increased safety and cost reduction. This study demonstrates the low cost hydrogen storage tank (type 2) and effective winding method for high pressure hydrogen storage. We use numerical analysis to verify stress changes inside the wire according to the winding condition. Also liner size, winding wire size and wire tension were studied for the safety and cost down. Results show that the stress of winding wire decreased with increased winding angle and increased the liner diameter. On the other hand, the stress of winding wire increased according to the increased wire thickness and tension.

  • https://doi.org/10.7316/KHNES.2019.30.4.338 인용 PDF KSCI