喷雾增湿在直接空冷中的应用效果及影响因素分析  

Effect of Spray Humidification in Direct Air Cooling and Influence Factors Analysis

作　　者：李春光[1] 张旭[1] 

机构地区：[1]同济大学,上海200092

出　　处：《流体机械》2012年第12期70-73,共4页Fluid Machinery

基　　金：国家"十二五"科技支撑计划资助项目(2011BAJ08B09)

摘　　要：对直接空冷单元喷雾增湿系统进行三维数值模拟,考察了入口空气相对湿度、喷水流量、喷水温度、雾滴粒径、雾化角度对降温效果的影响。结果表明:喷雾后出口平均温度明显降低,喷雾增湿法是机组安全渡夏行之有效的手段之一。入口空气相对湿度对降温效果影响最大;喷水流量和雾滴粒径次之;而喷水温度与雾化角度对其影响较小。Spray humidification applied in direct air-cooled unit had been 3-D numerically simulated.The influence of the inlet air relative humidity,the spray water flow rate,the spray water temperature,the water droplets size and the atomizing angle on the cooling effect were invested.Results indicated that the outlet air temperature dropped obviously when using spray humidification system.Spray humidification was one of the methods that made the units work safely in summer.The inlet air relative humidity was the greatest influence of cooling effect;spray water flow rate and the water droplets size took the second place;the spray water temperature and atomizing angle had the minimal impact.

关 键 词：直接空冷 喷雾增湿 数值模拟 影响因素 

分 类 号：TB65[一般工业技术—制冷工程]