冷凝式消雾节水冷却塔消雾节水性能试验研究

冷凝式消雾节水冷却塔近年来在中国开始应用。为获得冷凝式消雾节水冷却塔的消雾节水性能，对某设计循环水量为4 000 m³/h的冷凝式消雾节水冷却塔的出塔空气参数及节水率进行了试验研究。在循环水流量接近设计值时，冬季消雾模式开启工况下，试验得到了出塔空气干、湿球温度及风速分布。试验结果表明：冷凝式消雾节水冷却塔出口，靠近风筒壁面的空气流速要高于塔中心处的空气流速；出塔空气参数经加权平均后相对湿度为64.2%，出塔空气的羽雾稀释曲线始终处于不饱和区，不易形成雾气团；在试验工况下该冷却塔的冷凝回收水量为11.357 m³/h，蒸发损失水量为45.440 m³/h，节水率为25%。

Experimental Study on Performance of Plume Abatement and Water-saving Cooling Tower with Condensate Method

The condensate cooling towers for plume abatement and water-saving have been installed and applied in China in the recent years. To assess its plume abatement and water-saving performance, related experimental studies were conducted on a cooling tower with designed circulating water rate of 4 000 m³/h, where the outlet air parameters and water saving rate of this cooling tower were tested. When the circulation water volume was close to the design value, the outlet air dry-wet bulb temperature and velocity distribution were presented with the winter plume abatement mode turned on. The testing result shows that at the exit of the condensate cooling tower, the air flow velocity is higher around the wall surface than at the tower center. The average weighted air relative humidity was 64.2% such that no visible plume will form since the outlet air plume dilution line always lies in the unsaturated region. The amount of condensate water recollected was 11.357 m³/h and the mass of water loss was 45.440 m³/h due to evaporation. The water-saving rate of this cooling tower was 25% under testing conditions. The results can provide beneficial reference for the performance research of plume abatement and water-saving cooling towers.