空冷单元风机出口加装结合形导流板的数值模拟  

Numerical Simulation of the Air-cooled Cell with Combined Deflectors Installed at the Outlet of Fan

作　　者：程友良[1] 任泽民[1] 丁丽瑗[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,保定071003

出　　处：《汽轮机技术》2015年第2期93-95,共3页Turbine Technology

摘　　要：以600MW机组直接空冷单元的典型结构为依据,建立在风机出口加装结合形导流板的空冷单元模型,并利用CFD软件对加装了导流板的空冷单元内部流场进行数值模拟,分析结合形导流板尺寸变化对整个单元换热特性的影响,得到了最优结果。比较最优化的结合形导流板与长方形导流板的换热,可以得知,结合形导流板的换热效果更佳。为提高空冷单元换热效率、优化空冷机组设计提供了一定的依据。Based on the representative air-cooled condenser cell of 600 MW units,the physical models of air-cooled cell with combined deflectors installed at the outlet of fan were established. Using CFD software,numerical simulations for internal flow field were conducted in the air-cooled cell with combined deflectors installed. The influence of different combined deflectors on heat transfer characteristics of the unit was analyzed and the optimal deflector was got. Combined deflector was also said better in heat transfer than rectangular deflector by comparing. All these will provide some reference for improving the heat transfer efficiency of air-cooled unit and the optimal designing of air-cooled system.

关 键 词：直接空冷单元 结合形导流板 优化设计 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]