Numerical simulation and optimization analysis of low temperature adsorption hydrogen storage

In this paper, a two-dimensional axisymmetric hydrogen storage tank model is established based on the D-A model using software to simulate the activated carbon adsorption hydrogen storage filling process numerically. The distribution of pressure inside the tank under the boundary conditions of 0.5 atm-1 atm is obtained, and the trends and rates of pressure changes inside the tank under different boundary conditions are compared. The temperature distribution inside the tank is investigated under the initial temperature of 293.15 K, the external condition of 77 K, and the convective heat transfer coefficient inside and outside the tank is 20 W/(m2 & sdot;K), and the influence of adsorption materials on the temperature distribution inside the tank is compared with that of different thermal conductivity coefficients, and the general trend is that the temperature is higher and then lower, the temperature inside the tank is relatively high near the center axis, and the temperature near the tank wall is relatively low, and the addition of ribs can The addition of ribs can reduce the temperature inside the tank. This paper also calculates the adsorption amount of hydrogen at different pressures (0-7 MPa) and tem-peratures (80 K-260 K), and finds that the adsorption amount is the largest at 80 K and 7 MPa, with a value of 39.3 mol/kg. The novelty of this study is the coupling of many different physical fields to bring the results closer to reality and to give directions for optimization.