Simulation and analysis of fire and pressure reducing valve damage in on-board liquid hydrogen system of heavy-duty fuel cell trucks

Ying Tian, Jin Han, Yu Bu and Chuan Qin

Energy, 2023, vol. 276, issue C

Abstract: Hydrogen is flammable and can explode easily when mixed with air or exposed to open flames, so research is carried out on liquid hydrogen system in situations such as fire. In this paper, a new liquid hydrogen system model applied to heavy-duty trucks is established, and the model is verified according to the test data of previous generations, and the simulation and analysis under fire and pressure reducing valve damage are completed. The results show that the high temperature environment leads to the phenomenon of overpressure and overtemperature inside the liquid hydrogen tank and the air temperature vaporizer, which reduces the safety of the system. Damage to the pressure reducing valve can easily cause hydrogen supply temperature and pressure imbalance to affect the performance of the stack and reduce the stability of the system. In order to improve the stability and safety of the liquid hydrogen system, an optimized design scheme is proposed according to the simulation results. The research work can be further used as the theoretical basis for the formulation of design standards and optimized design of liquid hydrogen system for heavy-duty trucks.

Keywords: Fuel cell trucks; On-board liquid hydrogen system; Fire; Pressure reducing valve damage (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:276:y:2023:i:c:s0360544223009660

DOI: 10.1016/j.energy.2023.127572

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