摘要
影响空冷凝汽器换热性能的主要因素是环境大风所造成的热风回流或热风再循环。建立了某135MW机组直接空冷凝汽器流动和传热的数学模型。利用计算传热学软件Fluent,对夏季汽轮机考核工况(TRL)下空冷凝汽器的性能进行了数值模拟,即对直接空冷凝汽器外部空气的速度场、温度场进行模拟、分析和研究,为直接空冷系统的优化设计提供帮助。
The main factor affecting the heat--exchanging performance of direct air cooling condenser is backflow or recirculation of the hot air resulted from the ambient strong wind. A mathematical model of flow and heat transfer in direct air cooling condenser for a 135 MW unit has been established. By using a heat transfer software Fluent, the numerical simulation of direct air cooling condenser＇s performance under condition under turbine rated load （TRL） in summer has been carried out, i, e. the velocity field and temperature field of air outside the air cooling condenser have been simulated, analyzed , and studied , providing with help of optimizing design of the direct air cooling system.
出处
《热力发电》
CAS
北大核心
2008年第3期18-21,共4页
Thermal Power Generation
关键词
直接空冷机组
空冷凝汽器
数值传热学
速度场
温度场
换热
direct air cooling unit
air cooling condenser
numerical heat transfer
velocity field
temperature field
heat exchange.
