Experimental study on cluster effect of axial flow fans for an air-cooled power generator

LI Fulin; GUO Mu; ZHANG Hui; GENG Xueliang; YANG Lijun; DU Xiaoze

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Experimental study on cluster effect of axial flow fans for an air-cooled power generator

更新时间：2025-09-28

- Experimental study on cluster effect of axial flow fans for an air-cooled power generator
- Thermal Power Generation Vol. 42, Issue 9, Pages: 66-69(2013)
- 作者机构：
  
  1. 国核电力规划设计研究院
  2. 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
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU831.4
- Published：2013
- 稿件说明：
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LI Fulin, GUO Mu, ZHANG Hui, et al. Experimental study on cluster effect of axial flow fans for an air-cooled power generator[J]. Thermal power generation, 2013, 42(9): 66-69.
DOI：

LI Fulin, GUO Mu, ZHANG Hui, et al. Experimental study on cluster effect of axial flow fans for an air-cooled power generator[J]. Thermal power generation, 2013, 42(9): 66-69. DOI：

摘要

构建了与300 MW空冷机组空冷岛物理相似的风机组试验系统

分别在转速为600、800r/min下测量风机组中间列各台风机的入口壁面静压和总压

得出每台风机的风流量及其集群因子

并与单台风机运行时的参数进行对比。结果表明:风机集群运行时

集群效应与风机转速有关

转速越大其受临近区域其它风机的影响越显著;风机组中不同位置的风机集群因子的变化呈现一定的规律

处于中心区域的风机集群因子较大

说明其受集群效应的影响较小

处于边缘区域的风机受到进口空气流场变形的作用

集群因子较小;随着风机集群运行规模增加

集群效应对风机性能的影响会更加明显。

Abstract

The aerodynamic behavior of dozens of axial flow fans incorporated with air-cooled condensers in a power plant is different from that of an individual fan

which causes the so-called cluster effect.The experimental setup was established according to air-cooling system of the 300MW level power generating units

based on which

the cluster factors of each fan were tested with fan speed of 600r/m and 800r/m

respectively.The air flow rate generated by individual fan was compared with that of the fan cluster.The results indicated that the cluster factor was related to the fan speed

as well as to the number of operating fans.The higher the fan speed

the more obviously the inlet air flow of a fan was influenced by the neighbour fans.The cluster factors of fans at the periphery of air-cooling island were generally smaller than that of fans near the center.This can be due to the more significant variations of inlet air flow fields for the peripheral fans.

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