中国电机工程学报2012，Vol.32Issue(35)：74-79,前插11,7.
直接空冷凝汽器单排翅片管换热性能试验研究
Experimental Research on Heat Transfer Performance for Finned-tubes of Direct Air-cooled Condensers
摘要
Abstract
The heat transfer performance under various operating conditions is the key factor for design, optimization and operation of a direct air-cooled condenser (DACC). Aim at one-row finned-tubes installed in a 1000 MW ultra supercritical air-cooled power plant, and on the basis of a wind tunnel built on site, the heat transfer performance of the finned-tube was researched. Steam flowed into finned-tubes on the wind tunnel was imported from the cold side of the steam turbine. Based on the experimental data, dimensionless correlations between Nusselt number and Reynolds number for the air side of the finned-tube and the relationship between the dimensionless correlation and the head wind velocity distribution were developed. It is found that the heat transfer performance of finned-tubes not only depends on the air flow rate of the fan, but also correlates with the head wind velocity distribution. It is propitious to heat transfer when head wind velocity reduces gradually along finned-tubes downwards.关键词
直接空冷凝汽器/单排翅片管/风洞/迎面风速/传热系数/试验关联式Key words
direct air-cooled condenser/ one-row finned-tube/ wind tunnel/ head wind velocity/ heat transfer coefficient/ experimental correlation分类
能源科技引用本文复制引用
杨建国,张海珍..直接空冷凝汽器单排翅片管换热性能试验研究[J].中国电机工程学报,2012,32(35):74-79,前插11,7.基金项目
"十一五"国家科技支撑计划重大项目(2009BAA16B01). （2009BAA16B01）
