摘要
针对目前国内使用最为广泛的300 MW机组凝汽器,采用具有分布阻力和分布质量汇的多孔介质模型,数值研究了菱型、卵型、将军帽型、双峰型等典型布管凝汽器的性能,比较了不同布管形式凝汽器的壳侧压降和抽气量,总结出了凝汽器布管的一些基本原则,如管束外形以窄长锲型或山峰形为好、外围应设置辅助进汽通道、需要设置渐缩型空冷区等。
The thermal performance of power plant condenser for 300 MW unit, widely used in China, was numerically analyzed using a porous medium model with distributed flow resistance and mass sink. Four typical tube arrangements, lozenge-shaped, egg-shaped, cap-shaped, double-peak-shaped, were considered. The shell side pressure drops and venting rates of condenser for different tube arrangements were compared, and some roles for tube arrangement were concluded, such as, the bundle profile should be wedge-shaped or double-peak-shaped, auxiliary steam inlet sub-channels and the tapered air cooling region should be designed, etc.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2014年第1期123-127,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.51036003)
973项目(No.2013CB228301)
关键词
凝汽器
数值模拟
流动与传热特性
布管原则
condenser
numerical simulation
flow and heat transfer performance
roles for tube arrangement
