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进行了不互溶物系蒸汽在竖直管内降膜冷凝的实验研究，测得了蒸汽冷凝的上升极限汽速。建立了不互溶物系蒸汽冷凝上升极限汽速的数学模型。本文模型计算值和Wallis关系式计算值以及本文的实验结果的比较表明，本文模型具有很好的预测能力。
An experimental study on the falling film condensation of immiscible steam in a vertical tube was carried out. The rising vapor velocity limit of vapor condensation was measured. The mathematical model of vapor-liquid rising limit vapor velocity of immiscible system was established. The comparison between the calculated value of the model and the calculated value of Wallis and the experimental results in this paper shows that the proposed model has good predictive ability.