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本文参照Ｇｒｅｇｏｒｉｇ关于沟槽管冷凝传热的概念和Ｎｕｓｓｅｌｔ的经典分析方法，对前文提出的模型做了改进，提出了新经验计算式。根据冷凝传热膜系数αｍ及传热面积Ａ随Ｐ／Ｈ值（Ｐ为沟槽间距，Ｈ为槽深）变化的特点，提出了“单位温差传热速率”ｋｓ（或称“有效面积传热系数”，ｋｓ＝αｍＡ），用以分析与计算Ｖ型沟槽管冷凝传热的方法，对九种不同Ｐ／Ｈ值的Ｖ型沟槽表面冷凝传热进行了计算与实验研究，证实了Ｖ型沟槽管的最住Ｐ／Ｈ值为２。
In this paper, referring to Gregorig’s concept of condensation heat transfer in trench tube and Nusselt’s classical analysis method, the model proposed in the previous paper is improved and a new empirical formula is proposed. According to the characteristics of condensation heat transfer coefficient αm and heat transfer area A changing with the P / H value (P is the groove spacing and H is the groove depth), the “unit heat transfer rate” ks (or “effective area transfer Thermal coefficient ”, ks = αmA), for the analysis and calculation of condensation heat transfer of V-groove tube, the calculation and experimental study on condensation heat transfer of V-groove with nine different P / The V-groove tube has a maximum P / H of 2.