喷雾增湿对间接空冷机组散热器影响的数值研究  

Optimization Study of Spray Humidification Divice by Indirect Air-cooled Unit

作　　者：田松峰[1] 刘会阳 朱亚宁[1] 米晓冬 陈立新[2] 

机构地区：[1]电站设备状态监测与控制教育部重点实验室(北电力大学),保定071003 [2]国网河南省电力公司电力科学研究院,郑州450000

出　　处：《汽轮机技术》2015年第1期13-16,共4页Turbine Technology

基　　金：中央高校基本科研业务费专项资金资助项目(12QN39);河北省自然科学基金项目(E2012502016)

摘　　要：通过建立350MW间接空冷机组空冷散热器喷雾增湿系统的三维数值模型,利用Fluent软件对该系统进行数值模拟,分析了喷嘴位置及喷雾方向对散热管束换热效果的影响。模拟结果表明:在喷水量一定的前提下,喷嘴双排布置时散热管束的换热效果优于单排布置;而在塔外布置喷雾增湿装置,改变喷嘴的喷射方向时,散热管束外表面温度进一步降低,并且喷射角度为60°和90°时温度最低,散热器换热效果好。Through the establishment of 350MW indirect air-cooling unit air cooling radiator spray humidifying system of three dimensional numerical model ,using Fluent software to numerical simulation of the system ,and analyses the influence of nozzle position and the spray direction to the cooling heat transfer effect .The simulation results show that the water in the premise of a certain amount of double row layout at nozzle cooling tube bundle heat transfer effect is superior to the single row layout.And the spray humidifying device decorate outside the tower , change the direction of nozzle jet , surface temperature of the cooling bundles is further reduced outside ,and the spray Angle of 60°-90°the surface temperature is minimum,the radiator heat transfer effect is good .

关 键 词：喷雾增湿 间接空冷 喷嘴 数值模拟 

分 类 号：TK264.1[动力工程及工程热物理—动力机械及工程]