氷粒子充填層内の空隙率分布を利用した融解形状の能動的制御に関する研究

概要

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It is useful to prevent the formation of water channel, which is the wide flow channel formed in the ice particle bed due to local melting of ice particles in it, because it causes decrease of heat transfer between the ice particles and the flowing water, during the melting process of the ice particle bed. In this study, the shape of melted region of the ice particle bed was actively controlled to prevent the formation of water channel by varying the porosity distribution in it. From the experiment, it was shown that the shape of melted area can be varied by setting the hole in the adequate position in the ice particle bed. The melted region was diverged because the flow direction of water in the ice particle bed was varied by the hole. It was found that melted area can be increased when the melted region was diverged. Moreover it was shown that it is effective to increase the melted area to establish multiple holes, since the melted region is diverged successively due to the holes.
公益社団法人　日本冷凍空調学会の論文