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<p align="center"><font face="Verdana">直接空冷凝汽器考核工况的全厂数值模拟 <br/>石 磊,周云山,李国栋,刘海峰 <br/>中国华电工程(集团)有限公司,北京市海淀区西三环北路 91号(南门) ,100044 <br/>Numerical Simulation for Performance Assessment of Direct Air <br/>Cooled Condenser in an Entire Power Plant <br/>By SHI Lei, ZHOU Yunshan, LI Guodong, LIU Haifeng <br/>China Huadian Engineering Corporation Ltd. Beijing. 100044, China </font></p><font face="Verdana">
<p><br/>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。依托实际工程项目,建立了某 135MW 直接空冷凝汽器(ACC)全厂流动和传热的数学模型。利用计算传热学(NHT)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的数值模拟。对直接空冷凝汽器外部空气的速度场、温度场的模拟、分析和研究,为直接空冷系统的优化设计提供帮助。 <br/>关键词:直接空冷 空冷凝汽器 数值模拟 优化设计 <br/>Abstract: The main factor which influences the heat exchange performance of air cooled condenser is the backflow or recirculation of hot air caused by the environmental big wind. Based on actual project, the mathematic model for flow and heat transfer of direct air cooled condenser in a 135MW power plant is constructed. Using the numerical heat transfer(NHT) software called fluent, the thermal performance of air cooled condenser under typical steam turbine , especially TRL mode, in Summer is simulated. The simulating results, including the flowing field and temperature field are analyzed and studied. It offers good help for the optimal design of direct air cooling system. <br/>Keywords:direct air cooling; air cooled condenser; numeral simulation; optimal design <br/>0. 引 言 <br/>空冷是“富煤缺水”地区火电厂的主要冷却方式,它改变了原来“以水定电”的被动局面,在水资源日益紧张的今天,具有重要的意义[1]。山西格瑞特实业有限公司煤矸石综合利用发电项目规划容量为 2×135MW,采用机械通风直接空冷系统冷却汽轮机排汽。上海电气集团提供NZK135-13.24/535/535 直接空冷超高压中间再热凝汽式汽轮机。江苏双良空调股份有限公司提供双排管直接空冷凝汽器。 </font></p>
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