Influences of Lateral Double-Layered Deflectors on Cooling Performance of Air-Cooled Condenser  

作　　者：HUANG Wenhui HUANG Xianwei YANG Lijun DU Xiaoze 

机构地区：[1]Key Laboratory of Power Station Energy Transfer Conversion and System of Ministry of Education,School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China

出　　处：《Journal of Thermal Science》2021年第6期2164-2177,共14页热科学学报（英文版）

基　　金：The National Natural Science Foundation of China(Grant No.51476055,51821004);the National Basic Research Program of China(Grant No.2015CB251503);the Fundamental Research Funds for the Central Universities(Grant No.2018QN036)are gratefully acknowledged for supporting this research.

摘　　要：The cooling performance of air-cooled condenser(ACC)is susceptible to adverse impacts of ambient winds.In this work,three kinds of lateral double-layered deflectors installed under the ACC platform are proposed to weaken the unfavorable effects of cross winds.Through CFD simulation methods,the main parameters of thermo-flow performances of a 2×660 MW direct dry cooling system are obtained,by which it can be concluded that the deflectors can effectively reduce the inlet air temperatures while enhance the mass flow rates of upwind fans due to the guiding effect,especially at high wind speeds,while the improvement of cooling capacity of ACCs in the 0°wind direction is weak.The inclined-vertical deflectors are superior to others in performance improvement of ACCs for all cases,which can reduce the turbine back pressure by 12.15%when the wind speed is 12 m/s,so they can be applied to the performance enhancement of ACCs under windy conditions in practical engineering.

关 键 词：air-cooled condenser lateral double-layered deflectors cooling capacity turbine back pressure wind speed and direction 

分 类 号：TM621[电气工程—电力系统及自动化]