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

Enhui Zhang, Yangchun Zhao (), Jiahui Zhang, Wenchao Wang and Wenhao Yu
Additional contact information
Enhui Zhang: School of Mechanical Engineering, Inner Mongolia University of Science & Technology, 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

Energies, 2024, vol. 17, issue 20, 1-14

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.

Keywords: Type IV hydrogen storage cylinder; hydrogen behavior; hydrogen inlet port; hydrogen jet; thermal stratification phenomenon (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/20/5116/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/20/5116/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:20:p:5116-:d:1498846

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().