Simulation as Various Operating Condition for High Temperature Magnesium Hydride Reactors

D.Y. Shin, T.E. Kim, J.Y. Lee
Altsoft Inc., Seoul, South Korea
发布日期 2018

Magnesium hydride (MgH2) has been one of the most promising hydrogen storage methods that can be applied to commercial hydrogen energy systems due to magnesium’s safety, low cost, and excellent storage capacity for hydrogen, compared to other reversible metal hydrides. But hydrogen adsorption/desorption process has a considerable exothermic/endothermic reaction problem. For stable hydrogen adsorption process, it is very important to control heat from reactor. Therefore, it is essential to understand heat and mass transfer in reactor on operating process, and simulations would be needed under various conditions

In this work, the magnesium hydride reactor is modeled and analyses are performed under various operating conditions. The modeling for magnesium hydride reactor is performed with reference to Bao’s paper [1]. The effects of various operating conditions are evaluated for conversion for magnesium and temperature profile. For this work, Chemical Reaction Engineering Module of COMSOL Multiphysics software® is used : “Free and Porous Media Flow” and “Heat Transfer in Fluid” interface are used to simulate mass, momentum and energy balance for hydrogen, and “Domain ODEs and DAEs” interface is used to calculate conversion of magnesium with hydride reaction.