600MW火电机组间接空冷塔流动换热特性数值研究  

Numerical Simulation on the Flow Field and Heat Transfer Characteristics of Indirect Air-Cooling Tower in 600MW Supercritical Thermal Power Unit

作　　者：王为术[1] 张雨飞[1] 常娜娜[1] 

机构地区：[1]华北水利水电大学热能工程研究中心,河南郑州450011

出　　处：《郑州大学学报（工学版）》2014年第1期51-54,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省教育厅自然科学研究计划资助项目(2011A470007)

摘　　要：采用Fluent6.3软件对600 MW超临界火电机组自然通风间接空冷塔流动和换热性能进行了数值模拟,对不同的环境风速下空冷塔内流场特性和换热规律进行了研究.研究结果表明,空冷塔在风速为零的情况下流场较为稳定,散热量和通风量最大,随着风速的增大,空冷塔内流场发生了较大的变化,散热量和通风量都呈现下降趋势,对间接空冷机组的运行产生不利影响.研究结果为大型电站锅炉间接空冷塔的运行改造提供了理论依据.The flow field characteristics and heat transfer of the natural ventilation indirect air-cooling tower in 600MW supercritical thermal power unit were numerically simulated by Fluent6.3 at different environment wind speeds. The results indicate that when the wind velocity is 0, the flow field is relatively stable. The heat dissipating capacity and the ventilation quantity are the largest in the air-cooling tower under this condition. With the increase of wind speed, large changes of the flow field inside the tower have taken place ,at the same time,heat dissipation and ventilation quantity showe a trend of decline. It can cause an adverse impact on the operation of the indirect aircooling units. The results provide a theoretical basis for the operation of indirect air-cooling tower in the large power plant unit.

关 键 词：环境风速 空冷塔 散热量 数值模拟 

分 类 号：TM614[电气工程—电力系统及自动化]