Veröffentlichungen und Präsentationen

Effectively storing hydrogen in solid form using metal hydrides requires careful attention to thermal management challenges due to the exothermic nature of hydrogen absorption in metal hydrides [1], [2]. The generated heat during this process must be efficiently removed to achieve optimal performance of the storage system [3]. In this work, a 3D model of a metal hydride LaNi5-based solid hydrogen storage tank is developed utilizing the COMSOL Multiphysics® software (Figure 1), incorporating the Heat Transfer Module, Darcy’s Law Module, and Partial Differential Equation Module. The model also incorporates the coupling of momentum, heat, mass, and energy transfer within the LaNi5 metal hydride during hydrogen absorption. The main objective of this study is to understand the effects of the various parameters influencing the thermal behavior of the tank. To determine the parameters for optimizing fast and efficient heat exchange, the study investigated the impacts of supply pressure and heat exchange coefficient. The simulations results show the need to take these parameters into account when designing a hydride tank. By systematically varying supply pressure and heat exchange coefficient, the study identified optimal configurations that maximize heat exchange efficiency.