两相闭式热虹吸管冷凝换热规律的分析与计算

ANALYSIS AND CALCULATION OF CONDENSATION HEAT TRANSFER PROCEDURE OF TWO-PHASE CLOSED THERMOSYPHON

本文对热虹吸管内冷凝换热规律偏离Nusselt理论解的原因进行了分析。根据实测数据,用统计方法在Re-Fr图上划分了各种流型区域。给出了相应流型下冷凝换热系数半经验计算式。

The difference in condensation heat transfer coefficients of the two-phase closed thermosy-phon between the experimental results and that of Nusselt's was analysed. The regions to which different condensate flow patterns belong were identified in the Re-Fr statistical diagram. The semi-empirical formulas for condensation heat transfer coefficient calculation were developed under different basic flow patterns.