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分析了冷却塔的传热传质过程，考虑了冷却塔蒸发水带走的热量，推导出该过程的数学模型。认为利用该模型计算简单、省时。计算结果与经典的Ｓｕｔｈｅｒｌａｎｄ数值比较，误差为５％。
The heat and mass transfer process of the cooling tower was analyzed. The heat taken away by the evaporation water from the cooling tower was taken into account and the mathematical model of the process was deduced. It is considered that using this model is simple and time-saving. Comparing the calculated results with the classical Sutherland values, the error is 5%.