流動層中の水平加熱円管まわりの流動および伝熱特性の基礎的研究 : 第2報,流動化粒子の違いの影響と伝熱促進法の検討

概要

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The effect of the difference of the fluidization state due to the properties of particles on the heat transfer characteristics around a horizontal heated circular cylinder in a fluidized bed was studied. The pattern of fluidization of particles was observed, and the fluctuating pressure and the local heat transfer coefficient were measured around the cylinder. The correlation between the heat transfer and fluidization characteristics showed two points : (1) on the front of the cylinder, a group of particles moving actively due to the bubbling state cause a high heat transfer coefficient and (2) on the rear, a group of inactive particles cause a low one. With comparison between these results and those in the first report, it was made clear that the properties of particles influence the fluidization state and heat transfer characteristic significantly. Finally, the method of heat transfer augmentation around the cylinder in a fluidized bed was devised, and the feasibility was confirmed.
一般社団法人日本機械学会の論文
1990-06-25