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Numerical investigation of hydrogen sorption kinetics for AB5 type porous pellets.

Number: C-SA-1066

Author(s) : BHUIYA M.H., KIM J.

Summary

Simulation of hydrogen absorption and desorption processes in metal hydride pellets using axisymmetric domain was performed. Porous AB5 type metal hydride pellets made of thin copper coated LaNi5 particle was modelled as storage material. The mathematical model for simulation was described by considering mass conservation of hydrogen-absorbed metal alloy, Darcy flow in the porous medium, and heat generation and absorption by exothermic and endothermic reactions during the absorption and desorption process, respectively. The boundary conditions used in the simulation are similar to the conditions maintained later on in the experimental validation processes. The research presented in this article attempts to abridge that gap and complement the modeling efforts involving AB5 type metal hydrides. The axisymmetric domain of a single pellet with appropriate boundary conditions presented in this study shows good agreement with the experimentally obtained sorption data for LaNi5 hydride.

Details

  • Original title: Numerical investigation of hydrogen sorption kinetics for AB5 type porous pellets.
  • Record ID : 30023180
  • Languages: English
  • Source: International sorption heat pump conference, ISHPC 2017, Tokyo august 7-10.
  • Publication date: 2017/08/07

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