以氢燃料电池重卡车载70 MPa Ⅳ型储氢瓶为对象,通过数值模拟方法,分析大容积70 MPa Ⅳ型储氢瓶快速充装过程的温升规律和温升控制策略。结果表明：较小的氢气充装速率可以降低气瓶温升,但会增加充装时间;较高的环境温度会导致气瓶充装结束时的满装状态无法达到90%~100%;降低氢气预冷温度可显著降低气瓶温升,但会增加加氢站的冷能消耗;线性升压模式和前30 s预冷温度-40 ℃后续不预冷的预冷模式是该结构Ⅳ型储氢瓶最合适的温升控制策略。
Abstract
Focusing on the 70 MPa type Ⅳ hydrogen storage tanks used in hydrogen fuel cell heavy trucks, this study employs numerical simulation methods to analyze the temperature rise patterns and temperature control strategies during the rapid refueling process of large-capacity 70 MPa type Ⅳ hydrogen storage tanks. The results indicate that a lower hydrogen filling rate can reduce the temperature rise of the tank but will increase the filling time; higher ambient temperatures to be unable to reach the full state of 90% to 100% at the end of refueling; lowering the hydrogen pre-cooling temperature can significantly reduce the temperature rise of the tank, but will increase the cold energy consumption of the hydrogen refueling station; a linear pressurization mode and the pre-cooling mode with a temperature of -40 ℃ for the first 30 seconds followed by no pre-cooling are the most suitable temperature control strategies for the 70 MPa type Ⅳ hydrogen storage tank of this structure.
关键词
储氢气瓶 /
IV型瓶 /
快速充装 /
温升 /
数值模拟
Key words
hydrogen storage cylinders /
type Ⅳ cylinder /
fast filling /
temperature rise /
numerical simulation
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参考文献
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基金
国家重点研发计划（2019YFB1504805）; 国家市场监督管理总局科技计划项目（2022MK203）; 中国特种设备检测研究院二级学科（高压储氢装备测试与评价）（2021XKTD009）
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