600MW机组补水部位改造热经济性分析  

The Thermal Economic Analysis on Making-up Water Position Difference of a 600MW Unit

作　　者：李鹏[1] 王雷[1] 张瑞青[1] 郭宝仁 

机构地区：[1]沈阳工程学院能源与动力学院,沈阳110136 [2]东北电力科学研究院,沈阳110006

出　　处：《汽轮机技术》2015年第6期470-472,共3页Turbine Technology

摘　　要：在火力发电厂运行中,化学补充水的补水部位及数量对机组热经济性有较大影响。采用等效焓降理论,对化学补充水由除氧器补入改为凝汽器补入后的热经济性进行分析,同时进一步分析了由于补水量增加导致凝结水过冷度对机组热经济性影响。最后,以某600MW机组为例进行了定量计算,计算结果表明,虽然过冷度导致热经济性下降,但补水部位改变后总体热经济性是提高的。The location and flow of filling chemical water have great influence on the thermal efficiency in power plant. Using equivalent enthalpy drop method,The thermal economy of filling chemical water to condenser instead of the deaemtor is analyzed, and the effects of super-cooling temperature by the flow of filling chemical water is analyzed. Finally, this paper take a 600MW unit as an example, the economical targets is calculated quantitatively, The calculating results showed that although super-cooling decreases thermal efficiency, the performance of power units goes up because the location of filling chemical water is changed.

关 键 词：等效焓降 补水部位 过冷度 热经济性 

分 类 号：TM31[电气工程—电机]