E117 水素吸蔵合金を用いた水素吸蔵タンクの伝熱特性(新技術フォーラム-3 : 水素利用技術の進展と熱工学的問題)

概要

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A hydrogen storage system using hydrogen-absorbing alloy bed has the advantage of safer operation than other system using a high pressure. However, an exothermic chemical reaction during hydrogen absorption of the alloy depends on its temperature as well as hydrogen pressure. So an effective heat exchange between a coolant and the alloy bed having very poor heat conductivity is important to enhance the chemical reaction. As the results, heat conduction in the bed, is strongly coupled with the absorption or desorption process. This study has just started to develop and evaluate enhancement of the poor heat conduction in the bed. Experimental results during hydrogen absorption using LaNi_5 are shown and compared with simulation results.
2001-11-03