Simulations of hydrogen-storage system integrated with sensible storage system Available to Purchase

A three-dimensional mathematical model has been developed to study the performance of a coupled hydrogen-storage and thermal-energy-storage system. The heat transfer between the metal hydride tank and the sensible heat-storage system has been simulated. Embedded cooling tubes with water as the heat-transfer fluid were used to transfer heat between the metal hydride and thermal-energy-storage system during absorption and desorption cycles. The concrete-based thermal-energy-storage system stores the heat produced during absorption of hydrogen in the hydride tank and transfers it to the heat-transfer fluid. The stored heat is then reversibly utilised by the hydride tank during desorption of hydrogen. Simulations have shown that, on integration of the sensible heat storage system with the metal hydride tank, only 37% of the heat generated in the metal hydride tank is stored in the storage system. Thus, in order to store a higher amount of available thermal energy, an alternate material with higher thermal conductivity and specific heat will be required.