针对我国北方冬季气温较低和冷却塔内换热不均引起的填料下表面、进风口、基环面等处易结冰问题,需在塔的进风口处加装一定数量挡风板。论文建立冷却塔传热传质模型,采用Fluent模拟软件,模拟并分析在不同的风速下塔内空气温度场、最低水滴温度和最低空气温度,以及加装挡风板的最佳层数的变化规律;结果表明:1)低风速(小于4 m/s)塔内的背风面区域空气温度较高,随着风速的增加,高温区逐渐向迎风侧转移;2)特征平面的最低水滴温度、最低空气温度随着风速的增加先升高再降低,在风速V 4 m/s达到最大值;3)当环境温度为263.15 K、风速为2、6、8 m/s,挂1层挡风板可有效防止塔内结冰;当环境温度为256.15和250.15 K时,风速分别为2、4、6、8 m/s,分别挂1、1、2、4和4、1、3、5层挡风板可有效防止塔内特征面最低水滴结冰。 Aiming at the problems of low temperature in winter and low heat transfer in the cooling tower in North China, such as underfloor, inlet, base ring and so on, it is necessary to install a certain number of wind deflector at the air inlet of the tower. In this paper, the heat and mass transfer model of the cooling tower was established. The Fluent simulation software was used to simulate and analyze the air temperature field, the minimum water temperature and the minimum air temperature in the tower under different wind speeds, and the change of the optimal number of windscreens The results show that: 1) the air temperature in the leeward area in the tower with low wind speed (less than 4 m / s) is relatively high, with the wind speed increasing, the high temperature zone gradually shifts to the windward side; 2) The minimum air temperature firstly increases and then decreases with the increase of wind speed, reaching the maximum value at V 4 m / s; 3) When the ambient temperature is 263.15 K and the wind speed is 2, 6 and 8 m / s, Plate can effectively prevent the tower from freezing; when the ambient temperature is 256.15 and 250.15 K, the wind speed is respectively 2, 4, 6 and 8 m / s, respectively hanging 1,1,2,4 and 4,1,3,5 Layer wind deflector can effectively prevent the lowest characteristic droplets in the tower ice icing.