加热器抽汽压损偏离目标值对机组热经济性影响的定量分析  

The Quantitative Analysis on the Steam Extraction Pressure Loss Deviated from the Target on the Thermal Efficiency

作　　者：崔永波[1] 黄竹青[1] 

机构地区：[1]长沙理工大学能源与动力工程学院,长沙410114

出　　处：《汽轮机技术》2011年第4期264-266,270,共4页Turbine Technology

基　　金：湖南省科学技术厅基金项目(编号:05GK3080)

摘　　要：加热器变工况运行中,抽汽压损偏离目标值对机组热经济性有较大影响。采用等效焓降理论,利用汽轮机抽汽口压力不变,加热器出口水温可以变动的方法对抽汽压损偏离目标值影响机组经济性进行定量分析,并针对加热器的型式和位置的区别进行分类讨论;最后,以某N600-16.7/537/537机组为例说明抽汽压损偏离目标值对机组热经济性的影响。Variable condition of heater operating, the steam extraction pressure loss deviated from the target have great influence on the thermal efficiency. Using equivalent enthalpy drop method, pumping steam pressure loss deviated from the target unit economy influence to quantitative is analyzed in the method of the steam turbine steam extraction inlet pressure being changeless and water heater outlets changing. Finally, this paper take a N600 - 16.7/537/537 unit as an example to illustrate the steam extraction pressure loss deviated from the target of the thermal efficiency of influence.

关 键 词：加热器 等效焓降 抽汽压损 目标值 热经济性 

分 类 号：TK05[动力工程及工程热物理]