水平マイクロフィン管内蒸発に関する理論的研究 : 成層流モデル(熱工学,内燃機関,動力など)

概要

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The stratified flow model of evaporation heat transfer in horizontal microfin tubes has been developed. The profile of stratified liquid was determined by a theoretical model previously developed for condensation in horizontal microfin tubes. For the region above the stratified liquid, the meniscus profile in the groove between adjacent fins was determined by a force balance between the gravity and surface tension forces. The thin film evaporation model was applied to predict heat transfer in the thin film region of the meniscus. Heat transfer through the stratified liquid was estimated by using an empirical correlation proposed by Mori et al. The theoretical predictions of circumferential average heat transfer coefficient were compared with available experimental data for four tubes and three refrigerants. A good agreement was obtained for the case of Fγ_0<2.5 as long as the partial dry out of tube did not occur.
一般社団法人日本機械学会の論文
2004-01-25