A numerical investigation of hydrogen absorption phenomena in thin double-layered annulus ZrCo beds

作者：Yoo Haneul; Ko Johan; Ju Hyunchul^*

来源：International Journal of Hydrogen Energy, 2013, 38(18): 7697-7703.

DOI：10.1016/j.ijhydene.2012.08.153

• Hydrogen storage
• ZrCo metal hydride
• Hydrogen absorption model
• Three-dimensional simulation
• Heat and mass transfer

In this paper, a three-dimensional (3-D) hydrogen absorption model is applied to a thin double-layered annulus ZrCo hydride bed and validated against the temperature evolution data measured by Kang et al. [1]. In their experiment, the monitored hydrogen tank pressure decreased with time due to continuous hydrogen supply to a ZrCo hydride bed; hence, the effect of decreasing hydrogen feed pressure is considered for simulations. The equilibrium pressure expression for hydrogen absorption on ZrCo is derived as a function of temperature and the FI/M atomic ratio based on the pressure-composition isotherm data given by Konishi et al. [2]. In general, the calculated results agreed well with the temperature evolution data, and the hydrogen charging time for 99% absorption was accurately captured by the model. In addition, detailed simulation results, including multidimensional contours, clearly elucidate the hydrogen absorption behavior of the thin double-layered ZrCo MHB.

• 出版日期2013-6-18