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Numerical Analysis of Hydrogen Behavior Inside Hydrogen Storage Cylinders under Rapid Refueling Conditions Based on Different Shapes of Hydrogen Inlet Ports

Author

Listed:
  • Enhui Zhang

    (School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
    Inner Mongolia Key Laboratory of Intelligent Diagnosis and Control of Mechatronic System, Baotou 014010, China)

  • Yangchun Zhao

    (School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China)

  • Jiahui Zhang

    (School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China)

  • Wenchao Wang

    (School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China)

  • Wenhao Yu

    (School of Vehicle and Mobility, Tsinghua University, Beijing 100084, China)

Abstract

In order to investigate the effects of different shapes of hydrogen inlet ports on the behavioral characteristics of hydrogen in Type IV hydrogen storage cylinders under rapid refueling conditions, a mathematical model of hydrogen temperature rise and a three-dimensional numerical analysis model were developed. The rectangular, hexagonal, triangular, Reuleaux triangular, circular, elliptical and conical inlet ports were researched by using computational fluid dynamics methods. The results showed that, for the same refueling flow rate and cross-sectional area, the hydrogen temperature inside a cylinder with a rectangular inlet port is higher and the jet tilt angle is larger than for a hexagonal port, while the thermal stratification phenomenon is not obvious. The hydrogen temperature inside a cylinder with a triangular inlet port is lower than that with a Reuleaux triangle port and the jet tilt angle is larger, and neither has significant thermal stratification. The hydrogen temperature inside a cylinder with a circular inlet port is higher than that with an ellipse port, the jets are not tilted on either one, and the phenomenon of thermal stratification is prominent. Further analysis indicated that enlarging the cross-sectional area and increasing the refueling flow rate results in a higher hydrogen temperature and intensified thermal stratification and an upward-angled jet can effectively reduce or eliminate thermal stratification.

Suggested Citation

  • Enhui Zhang & Yangchun Zhao & Jiahui Zhang & Wenchao Wang & Wenhao Yu, 2024. "Numerical Analysis of Hydrogen Behavior Inside Hydrogen Storage Cylinders under Rapid Refueling Conditions Based on Different Shapes of Hydrogen Inlet Ports," Energies, MDPI, vol. 17(20), pages 1-14, October.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:20:p:5116-:d:1498846
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    References listed on IDEAS

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    1. Longchang Xue & Jiajia Deng & Xueren Wang & Zaizhou Wang & Bin Liu, 2022. "Numerical Simulation and Optimization of Rapid Filling of High-Pressure Hydrogen Storage Cylinder," Energies, MDPI, vol. 15(14), pages 1-16, July.
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