多孔質伝熱面の核沸騰熱伝達特性 : 最適粒子径

概要

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Using porous heating surfaces made by bonding spherical metal particles on a smooth substrate by plating, the effect of the particle diameter on nucleate pool boiling heat transfer has been experimentally studied in saturated R-113, R-11 and water. Pool boiling curves are classified into two groups according to the difference of the mechanism of the enhancement of boiling heat transfer; a similar type to a plain surface and a similar type to a porous surface. The latter type has boiling heat transfer coefficient about ten times that of the plain surface, and the increasing ratio of heat transfer coefficient decreases with increasing in heat flux. From above experimental results and a simple analysis, the practical equation being able to decide the range of the optimum diameter of the particle is obtained.
一般社団法人日本機械学会の論文
1984-03-28