间接空冷塔防侧风影响的数值模拟及优化  

Numerical Simulation and Optimization on Anti-crosswind of Indirect Air Cooling Tower

作　　者：田松峰[1] 戴文鹏 向同琼 王先董 郭硕[1] 

机构地区：[1]电站设备状态监测与控制教育部重点实验室(华北电力大学),保定071003 [2]四川省特种设备检验研究院,成都610061

出　　处：《汽轮机技术》2016年第2期101-104,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：对SCAL型间接空冷塔安装十字挡风翅墙的方案建立了三维数值计算模型,为了便于分析环境风速对各区域流动换热性能的影响,将空冷塔底部分为W、Tr、Tl和L 4个区域,在环境气温为26.2℃的情况下进行了数值模拟。结果表明:针对该机组,当翅墙结构参数为θ=0°,h=16.4m,b=10m时,十字翅墙对空冷塔的流动和传热性能改善效果最佳。其改善程度随着环境风速的增加更加明显,风速到9m/s时,空冷塔热效率可提高26.52%。十字挡风翅墙对Tr、Tl区流场改善效果最佳;该方案对解决电厂间接空冷机组受侧风影响较大的问题具有重要的理论意义和工程价值。The 3D numerical calculation model of SCAL indirect air cooling tower installation cross wind wing wall is established. In order to facilitate analysis the influence of wind speed on air flow and heat transfer performance for the different regions. The bottom of air cooling tower is divided into four areas such as W, T,, T1 and L area. Simulated under the condition of the environment temperature is 26.2℃. The results indicate that when the wing wall structure parameters as the θ=0°, h = 16.4m, b = 10m, cross wing wall on the flow and heat transfer of air cooling tower performance improvement effect is best. Improve its degree increased with the increase of environmental wind speed is more obvious, the wind speed to 9m/s, the air cooling tower thermal efficiency can be increased by 26.52%. Cross wind wing wall improve the effect of Tr, Tl area flow field best. The optimization is of engineering value and enormous significance on solving the problem of indirect air cooling units are greatly influenced by crosswind.

关 键 词：间接空冷 数值模拟 优化设计 十字挡风墙 

分 类 号：TK264.1[动力工程及工程热物理—动力机械及工程]