水平内面溝付管内の圧力損失および凝縮熱伝達係数の予測と検証

摘要

In this paper, the prediction methods of pressure drop of two-phase flow and condensation heat transfer coefficients, which were derived from the measured friction factor data in the single-phase flow experiments of fourteen kinds of internally helical-grooved tubes with 6.35mm o.d., were shown and the evaluation were made by the comparisons of the predicted values with experimental data measured by Haraguchi et al. for an internally helical-grooved tube and Miyara et al. for an internally herringborn-grooved tube. The results indicate that predicted values of pressure drop and condensation heat transfer coefficients agree with their measured data within 30% and proposed methods may be able to predict accurately for many kinds of internally grooved tubes.%14種類の内面溝付管について単相圧力損失実験で得rnられた摩擦係数の予測式をもとに，凝縮における気液二rn相流の圧力損失および凝縮熱伝達係数の予測計算を行っrnた。また，それら予測値の妥当性を他の研究者の実験値rnで検証した。