CFD Modeling And Optimization Of Adsorptive Hydrogen Storage In Porous Materials

Adsorptive hydrogen storage in porous material has generated a significant amount of interest, due to the advantage of the light weight storage containers, large choice of shape and the low work pressure. We build the computational fluid dynamics (CFD) model and the adsorption isotherm model of hydrogen storage in porous materials during the process of charge and discharge. This paper uses CFD to simulate the charging and discharging of a sorption-based hydrogen storage system and carry out the study of parameter. Then, we predict and optimize the performance of hydrogen storage on MOF-5.First, the CFD model of adsorptive hydrogen storage in porous material is based on the mass, momentum and energy conservation equations. The performance of adsorption process is modeled using the Dubinin-Astakov adsorption isotherms and Linear Driving Force (LDF) model. We have considered the heat capacity of the adsorbed phase of hydrogen in CFD model of adsorptive hydrogen storage in porous material.Second, this paper uses the CFD commercial software Fluent to simulate the charging and discharging processes as well as when the system is idle (which we define as dormancy) of adsorptive hydrogen storage on activated carbon in the case of room temperature water cooling. We study the changes of temperature, pressure, velocity and adsorption during the charging and discharging processes as well as when the system is idle of adsorptive hydrogen storage on activated carbon in the case of room temperature water cooling. The results are compared with experiment data conducted by the Hydrogen Research Institute of Universite du Quebec a Trois-Rivieres. In addition, we have studied the effect of the effective heat capacity, isosteric heat of adsorption and mass flow rates on temperature and adsorption.Third, this paper uses the CFD commercial software Fluent to simulate the charging and dormancy processes of adsorptive hydrogen storage on activated carbon in the case of liquid nitrogen cooling. We study the changes of temperature, pressure and adsorption during the charging and dormancy processes of adsorptive hydrogen storage on activated carbon in the case of liquid nitrogen cooling. The results are compared with experiment conducted by the Hydrogen Research Institute of Universite du Quebec a Trois-Rivieres. In addition, we have studied the effect of the Moving boundary and physical parameters on temperature and adsorption.Finally, this paper uses the CFD commercial software Fluent to simulate the charging and discharging processes as well as when the system is idle (which we define as dormancy) of adsorptive hydrogen storage on MOF-5in the case of room temperature water and liquid nitrogen cooling. We replace activated carbon by powder and compacted MOF-5in the CFD model of sorption-based hydrogen storage system in the case of room temperature water and liquid nitrogen cooling. We predict the distribution of temperature, pressure and adsorption during the charging and dormancy processes in different cooling conditions. The simulation results for MOF-5are compared with activated carbon. Then, we predict and optimize the performance of hydrogen storage on the scale MOF-5tank.