Optimal design of a hydrogen tube skid for stable charging, storage, and discharging

This research investigates the optimization of a hydrogen tube skid's design for stable charging, storage, and discharging. It aims to propose an optimized manifold design based on the analysis of temperature and pressure changes within the cylinders. Using an experimentally validated model, the study analyzes cylinder pressure and temperature. The temperature and pressure in the cylinders increase and decrease during the charging and discharging processes, respectively. Specifically, the central cylinder in the skid exhibits a temperature 9% higher than the corners. Controlling the valve opening ratio effectively regulates temperature and pressure in the nine cylinders. Reducing the valve opening ratio to 75% from 100% decreases the temperature by 13 degrees C and the pressure by 10 MPa. Furthermore, it reduces temperature and pressure variations between the cylinders during charging to 1 degrees C and 0.1 MPa, respectively. These findings contribute to achieving a safe hydrogen delivery system and realizing an economically efficient hydrogen infrastructure.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.