中国电机工程学报2013，Vol.33Issue(5)：46-53,前插7,9.
直接空冷风机进口空气流动特性
Inlet Flow Characteristics of Fans in Direct Dry Cooling Systems
摘要
Abstract
Tens of axial flow fans are arranged in an array in the direct dry cooling system. It is benefit to the design and operation of air-cooled condensers to investigate the aerodynamic behavior of the array of axial flow fans, in which the inlet flow characteristics of axial flow fans are key issues. The numerical simulation and model experiments were presented to clarify the inlet flow characteristics of axial flow fans . The results show that the flow distortion induced inlet flow angle is so high that the exterior flow area of the axial flow fan has small velocity when the axial flow fan is independently running. It is improved when the axial flow fan is running together with other fans. The inlet flow distortions are deteriorated for the exterior fans in the array of axial flow fans, resulting in the low flow rates for the exterior fans. The location coefficient was proposed to evaluate the inlet flow characteristics of six axial flow fans, which is of importance to further clarify the cluster operation of axial flow fans in direct dry cooling system.关键词
直接空冷/轴流风机/进口流动特性/集群效应Key words
direct dry cooling system/ axial flow fan/ inlet flow characteristics/ cluster effect分类
能源科技引用本文复制引用
张辉,耿学良,郭牧,杨立军,杜小泽,杨勇平..直接空冷风机进口空气流动特性[J].中国电机工程学报,2013,33(5):46-53,前插7,9.基金项目
国家自然科学基金委员会与神华集团有限公司联合资助项目(U1261108) （U1261108）
国家重点基础研究发展计划项目(973计划)(2009CB219804) （973计划）
中央高校基本科研业务费专项资金. （）
