Analysis of Hydrogen Filling of 175 Liter Tank for Large-Sized Hydrogen Vehicle

Abstract

Due to the low density of hydrogen gas under ambient temperature and atmospheric pressure conditions, the high-pressure gaseous hydrogen storage method is widely employed. With high-pressure characteristics of hydrogen storage, rigorous safety precautions are required, such as filling of compressed gas in a hydrogen tank to achieve reliable operational solutions. Especially for the large-sized tanks (above 150 L), safety operation of hydrogen storage should be considered. In the present study, the compressed hydrogen gas behavior in a large hydrogen tank of 175 L is investigated for its filling. To validate the numerical approach used in this study, numerical models for the adaptation of the gas and turbulence models are examined. Numerical parametric studies on hydrogen filling for the large hydrogen tank of 175 L are conducted to estimate the hydrogen gas behavior in the hydrogen tank under various conditions of state of charge of pressure and ambient temperature. From the parametric studies, the relationship between the initial SOC pressure condition and the maximum temperature rise of hydrogen gas was shown. That is, the maximum temperature rise increases as the ambient temperature decreases, and the rise increases as the SOC decreases.

Compression of Hydrogen Gas for Energy Storage: A Review

“…High-pressure hydrogen storage tanks, typically in the range of 350-700 bar, enable a larger amount of hydrogen to be stored in a smaller volume, making it more practical for use in refuelling stations and for vehicle-range requirements. There are many research works [3]- [9] that summarise a series of computational fluid dynamics (CFD) models on the flow field and temperature field during the process of hydrogen charging the high-pressure gaseous hydrogen storage method is widely employed. With high-pressure characteristics of hydrogen storage, rigorous safety precautions are required, such as filling of compressed gas in a hydrogen tank to achieve reliable operational solutions.…”

“…Kim et al [3] analyzed hydrogen filling for a 175-liter tank used in large-sized hydrogen vehicles. Xue et al [4] used numerical simulation and optimization to study the rapid filling of high-pressure hydrogen storage cylinders.…”

Numerical Simulation and Optimization of Rapid Filling of High-Pressure Hydrogen Storage Cylinder

“…Kim et al studied the numerical parameters of hydrogen charging in large hydrogen storage tanks and revealed the relationship between the initial SOC pressure and the maximum temperature rise of hydrogen [23]. Seung et al used a programming language to compile the Reynolds number and Nusselt number data and performed a systematic analysis of these numbers and the SOC.…”

“…A modified standard k-ε model for transport based on the turbulent kinetic energy k and dissipation rate ε is proposed. Compared with the standard k-ε model, C 1ε changes from 1.44 to 1.52, which makes the correlation between permeability and momentum, time, and density more accurate [23]. The turbulent kinetic energy k and its dissipation rate ε are obtained using the following transport equation.…”