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热力发电  2014 

大型间接空冷机组空冷塔热力性能实验系统

, PP. 79-82

Keywords: 600mw,间接空冷机组,空冷塔,实验系统,换热系数,测量误差

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Abstract:

以某600mw间接空冷机组的空冷塔为原型,按1:30的比例,根据相似原理设计了1套自然环境条件下大型间接空冷塔的实验系统。该系统由模型空冷塔、空冷模型散热器、散热热负荷控制系统及数据采集系统等组成。实验期间可根据数值大小及实验目的利用控制系统调整热负荷。对实验数据计算及分析,表明:该空冷塔实验系统的换热系数测量误差小于20%;利用该实验系统,可获得不同环境气象条件下,空冷塔内部空气流场特性,以及散热负荷的空间分布规律;可进行间接空冷系统热空气回流、冬季防冻及烟塔合一条件下塔内气体流动传热机理的研究。

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