Simulation of heat transfer in a metal hydride reactor with aluminium foam

Numerical study of hydrogen purification using metal hydride reactor with aluminium foam

“…This is important because effective thermal conductivity strongly depends on the composition of the gas mixture. To account for the presence of a metal foam in a metal hydride bed, the mathematical model was modified by analogy with [13,14]. In these papers, one [13] and two-dimensional [14] models were used to study the effect of the impact of different characteristics of aluminium foam and reactors on the performance of hydrogen storage systems.…”

“…The verification was performed for systems with different alloys of the AB5 type, both in the presence and absence of impurities in hydrogen [24]. For verification of the model in the presence of aluminium foam, the numerical results were compared with the experimental results reported in [13]. The metal hydride tank used for the experimental tests in [13] had cylindrical geometry, with the innermost volume occupied by aluminium foam, and the intermediate annular region filled with 25 g of LaNi 5 .…”

“…For verification of the model in the presence of aluminium foam, the numerical results were compared with the experimental results reported in [13]. The metal hydride tank used for the experimental tests in [13] had cylindrical geometry, with the innermost volume occupied by aluminium foam, and the intermediate annular region filled with 25 g of LaNi 5 . The basic parameters are presented in Table. 1.…”

Simulation Studies on the Coupling Process of Heat/Mass Transfer in a Metal Hydride Reactor

“…An alternative direction implicit (ADI) method was www.intechopen.com Simulation Studies on the Coupling Process of Heat/Mass Transfer in a Metal Hydride Reactor 557 used to solve them. The time step was 0.01s, while convergence was assumed when the error of P and T were respectively lower than 10 -3 Pa and 10 -3 K. (Laurencelle and Goyette, 2007) have carried out extensive experimental studies on a MH reactor packed with LaNi 5 , and the data they reported were used to validate our model. The so-called "small" reactor has an internal diameter of 6.35mm and a length of 25.4mm.…”

Efficient hydrogen storage in up-scale metal hydride tanks as possible metal hydride compression agents equipped with aluminium extended surfaces

“…Therefore, internal heat transfer enhancements have become more attractive and can roughly divided in two ways: 1) Enhancement of the thermal conductivity of the metal hydride powder by insertion of aluminium foam [13][14][15], copper wire net structure [16] or by creating metal hydride compacts [17][18][19][20], 2) Integration of heat exchangers inside the bed such as embedded heat exchanger tubes [21][22][23], finned tube heat exchangers [24][25][26][27], spiral heat exchangers [28,29] or heat pipes [30].…”