空冷机组直接空冷系统变工况特性的计算分析  

CALCULATION AND ANALYSIS OF CHARACTERISTICS UNDER OFF-DESIGN CONDITION OF DIRECT AIR COOLING SYSTEM FOR AIR COOLING UNITS

作　　者：李高潮[1] 朱宝田[1] 陈胜利[1] 彭娜[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2008年第10期80-82,86,共4页Thermal Power Generation

摘　　要：采用η-NTU法,建立了空冷机组直接空冷系统变工况计算模型。对某台600MW空冷机组直接空冷系统的变工况特性进行了计算分析,得到迎面风速、环境温度以及机组排汽流量变化对背压影响的规律,为确定空冷凝汽器在变工况下的合理运行方式提供依据。By adopting η- NTU method,a calculation model concerning off- design conditions of direct air cooling system for the air cooling units has been established,the characteristics under off- design conditions of direct air cooling system for a 600 MW air cooling unit have been calculated and analysed, obtaining the law of facing wind velocity, ambient- temperature, and flow rate variation of exhausted steam from the unit affecting the back pressure, providing with basis for determining reasonable operation mode of air cooling condenser under off- design conditions.

关 键 词：600MW机组 直接空冷 变工况 环境温度 排汽流量 背压 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]