The role of pore geometry (pore diameter d_p and pore pitch P_p) on pore/subtunnel surfaces was investigated using the refrigerant R-123, and the results are compared with those of R-134a. Nine samples had 0.1 ≤ d_p ≤ 0.3 mm and 0.75 ≤ P_p ≤ 3.0 mm. The trend of heat transfer coefficients was approximately the same as that of R-134a. It increased as the pore size increased and pore pitch decreased. The heat transfer coefficients of R-123 were lower than those of R-134a, which may be attributed to the superior thermo-physical properties (vapor density, latent heat of vaporization) of R-134a, although the bubble dynamic parameters (bubble departure diameter, frequency) were favorable to R-123. Comparison of the data with existing values revealed poor prediction, and a new model was proposed. The new model predicted most (92% of the R-123 and 76% of R-134a) of the data were within ± 40%.

中文翻译：

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R-123在多孔表面上的核沸腾沸腾

使用制冷剂R-123研究了孔几何形状（孔径d _p和孔间距P _p）在孔/子通道表面上的作用，并将结果与​​R-134a进行了比较。九个样品具有0.1≤ d _p ≤0.3mm并且0.75≤ P _p≤3.0毫米 传热系数的趋势与R-134a大致相同。随着孔尺寸的增加和孔距的减小，它增加。R-123的传热系数低于R-134a的传热系数，这可能归因于R-134a的优异的热物理性质（蒸气密度，汽化潜热），尽管气泡动力学参数（气泡偏离）直径，频率）对R-123有利。数据与现有值的比较显示出较差的预测，并提出了一个新模型。新模型预测最多的数据（R-123的92％和R-134a的76％）在±40％之内。