Analysis of temperature rise mechanism of carbon fiber full-wrapped hydrogen storage cylinder during fast charging process
OU Chenxi1,HUANG Si1*,YANG Gang2
1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, Guangdong 510641, China; 2. Guangdong Institute of Special Equipment Inspection and Research, Foshan, Guangdong 528000, China
Abstract：Carbon fiber fully-wrapped hydrogen storage cylinders have been widely used in China, with working pressure of the cylinders mainly includes 35 MPa and 70 MPa.At present, there is no reasonable charging and pressurization procedure for the hydrogen refueling station, which will inevitably lead to new defects in the filling process of the cylinders in the future. Based on the research status at home and abroad, the heating mechanism of the rapid filling process of gas cylinders was studied. The simulation calculation model is expanded through UDF, and the filling process is deeply analyzed. The temperature change law of vehicle hydrogen storage cylinders with different volumes, different storage pressures and different filling times during the rapid filling process at room temperature are explored. It provides a test basis for the optimization of the filling process by the hydrogen refueling station and the inspection and testing unit in the future. The research results indicate thatthe larger the cylinder vo-lume, the lower the average temperature during the filling process, but the difference is not statistically significant. The higher the storage pressure of the gas cylinder, the higher the average temperature du-ring the filling process and even partially exceeds 85 ℃. The longer the cylinder filling time, the lower the average temperature during the filling process. The average pressure in the cylinders that are pressurized and filled by the linear pressure boosting method also increases linearly with the same law.
欧晨希,黄思*,杨刚. 碳纤维全缠绕储氢气瓶快充过程温升机理分析[J]. 排灌机械工程学报, 2024, 42(5): 470-476.
OU Chenxi,HUANG Si*,YANG Gang. Analysis of temperature rise mechanism of carbon fiber full-wrapped hydrogen storage cylinder during fast charging process. Journal of Drainage and Irrigation Machinery Engin, 2024, 42(5): 470-476.
