4603 有限長の垂直円柱まわりのサブクール膜沸騰熱伝達(G06-1 伝熱(1),G06 熱工学)

概要

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Correlating equations for the film boiling heat transfer from a vertical cylinder of finite-length to subcooled liquids were examined and proposed. The overall heat transfer rate around the cylinder was determined by taking into account each convective heat transfer on the bottom, side and top surfaces of the cylinder. The present prediction method was compared with the experimental data obtained by quenching method. The test cylinder used in the experiments are, respectively, 32mm×16mm, 32mm×32mm, 32mm×64mm, 45mm×45mm, 50mm×16mm, 50mm×32mm and 50mm×64mm in diameter and length. The degree of liquid subcooling was varied from 2 to 30K. All the experimental data can be correlated within ±15% by the present prediction method.
2006-09-15