氢燃料电池汽车氢气罐阀内限流器动态行为及焦耳-汤姆逊特性分析

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-04-03 DOI:10.1016/j.ijhydene.2025.03.351

Chuang Liu , Dong Xue , Wen-qing Li , Long-jie Yu , Jia Zhao , Ji-yuan Yang , Zhi-jiang Jin , Dong-yu Chen , Jin-yuan Qian

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引用次数: 0

摘要

氢燃料电池汽车（HFCVs）由于脱碳而得到迅速发展。储氢阀（OTV）是保证氢燃料汽车储氢系统安全运行的关键装置。本文采用动态网格技术和UDF技术，对氢气OTV内限流器的动态行为和焦耳-汤姆逊特性进行了数值研究。采用可实现的k-ε模型和Real-Gas-Soave-Redlich-Kwong状态方程。结果表明，压降主要影响与平衡位置的偏差，而弹簧刚度主要影响波动区间。当弹簧刚度大于4kn /mm时，流体力保持稳定，但当弹簧刚度大于2kn /mm时，流体力波动较大。流量波动分为两个阶段：流量调节阶段和稳定流动阶段。焦耳-汤姆逊系数在特定温度下保持稳定。本研究可为整车OTV设计及整车安全性提供参考。

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Dynamic behavior and Joule-Thomson characteristics analysis on flow limiter inside hydrogen On Tank Valve for hydrogen fuel cell vehicles

Hydrogen fuel cell vehicles (HFCVs) are developing rapidly due to the decarbonization. Hydrogen On Tank Valve (OTV) is a crucial device for ensuring the safety of hydrogen storage system in HFCVs. In this paper, dynamic behavior and Joule-Thomson characteristics of flow limiter inside hydrogen OTV is investigated numerically by using dynamic mesh and UDF techniques. Realizable k-ε model and Real-Gas-Soave-Redlich-Kwong equation of state are used for 70 MPa hydrogen. Results show that pressure drop mainly influences the deviation from equilibrium position while spring stiffness affects the fluctuation interval. Fluid forces remain stable when spring stiffness above 4 kN/mm but fluctuate significantly at 2 kN/mm. Flow rate fluctuations are divided into two stages: flow regulation stage and steady flow stage. Joule-Thomson coefficient remains stable at specific temperatures. This study can provide references for the design of OTV and the safety of HFCVs.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.