火电站直接空冷凝汽器性能考核评价方法 performance evaluation for direct air-cooled steam condensers in power plant.pdfVIP

第27 卷 第2 期 中 国 电 机 工 程 学 报 Vol.27 No.2 Jan. 2007 2007 年1 月 Proceedings of the CSEE ©2007 Chin.Soc.for Elec.Eng. 0258-8013 (2007) 02-0059-05 TK124 TK264 A 470 20 文章编号 中图分类号 文献标识码 学科分类号 火电站直接空冷凝汽器性能考核评价方法 杨立军 杜小泽 杨勇平 刘登瀛 ( 电站设备状态监测与控制教育部重点实验室(华北电力大学) 北京市 昌平区 102206) Performance Evaluation for Direct Air-cooled Steam Condensers in Power Plant YANG Li-jun, DU X iao-ze,YANG Yong-ping, LIU Deng-ying (Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University), Ministry of Education, Changping District, Beijing 102206, China) ABSTRACT: The performance of direct air-cooled steam 加 在考核空冷凝汽器传热能力的基础上 还需测定凝汽器 condenser in power plant plays an important role in its safe and 传热系数 以传热系数保证值作为直接空冷凝汽器性能考核 economical operation. It is important to establish the 的补充指标 performance evaluation method by investigating the influences 关键词 直接空冷 凝汽器 汽轮机背压 环境温度 传热 of various operating parameters on the direct air-cooled 系数 性能评价 condenser performance. Based on the theoretical analysis of the heat transfer in direct air-cooled condenser, the correlation 0 引言 between the exhaust steam pressure and the saturated exhaust 由于直接空冷技术可有效解决富煤贫水地区 steam flow rate, cooling air flow rate, heat transfer coefficient 的发电问题 因而在世界上获得了快速发展[1-2] 直 and area of the condenser and the ambient temperature was 接空冷机组与常规机组的主要区别在冷端系统 直 presented. The influen