Numerical simulation of the hydrogen storage with reaction heat recovery using metal hydride in the totalized hydrogen energy utilization system

Tetsuhiko Maeda, Keiichi Nishida, Manabu Tange, Toru Takahashi, Akihiro Nakano, Hiroshi Ito, Yasuo Hasegawa, Masao Masuda, Yoshiaki Kawakami

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Numerical simulation of a hydrogen storage tank of a Totalized Hydrogen Energy Utilization System (THEUS) for application to commercial buildings was done to verify the practicality of THEUS. THEUS consists of a fuel cell, water electrolyzer, hydrogen storage tank and their auxiliary machinery. The hydrogen storage tanks with metal hydrides for load leveling have been previously experimentally investigated as an important element of THEUS. A hydrogen storage tank with 50 kg AB5 type metal hydride was assembled to investigate the hydrogen-absorbing/desorbing process, which is exothermic/endothermic process. The goal of this tank is to recover the cold heat of the endothermic process for air conditioning, and thus improve the efficiency of THEUS. To verify the practical effectiveness of this improved system, we developed a numerical simulation code of hydrogen storage tank with metal hydride. The code was validated by comparing its results with experimental results. In this code the specific heat value of the upper and lower flanges of the hydrogen storage tank was adjusted to be equal to the thermal capacity of the entire tank. The simulation results reproduce well the experimental results.

Original languageEnglish
Pages (from-to)10845-10854
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number17
DOIs
Publication statusPublished - 2011 Aug 1

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Keywords

  • Hydrogen energy system
  • Hydrogen storage
  • Metal hydride
  • Reaction heat recovery
  • Simulation model

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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