基于MATLAB程序设计的汽轮机组热经济性分析  

Calculation and analysis of steam turbine unit's thermal efficiency based on MATLAB

作　　者：王强[1] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051

出　　处：《现代机械》2015年第4期94-98,共5页Modern Machinery

摘　　要：对火电厂汽轮机组热力系统的热经济性分析理论进行阐述的基础上,通过建立热力学分析计算模型、编写MATLAB语言程序,运用等效焓降法对N200-12.75/535/535凝汽式汽轮机组热力系统各加热器凝汽系数、循环效率、汽轮机绝对内效率等机组热经济性指标进行计算。最后,结合对汽轮机组加热器效率、补水方式、排污及其利用系统的局部定量分析比较,提出了相应的节能降耗措施,指导机组热力系统的优化,从而为寻求机组最佳运行提供依据。Based on a description of the analysis theory of the thermal efficiency of coal - fired power plant＇ s steam turbinethermodynamic system, through establishing the thermodynamics analysis calculation model, and writing MATLAB lan-guage, this paper adopts the calculation method of equivalent enthalpy drops to calculate the thermal efficiency indices ofcondensing coefficient, cycle efficiency and absolute internal efficiency of each heater of N200 - 12.75/535/535 condensingsteam turbine＇ s thermal system. Finally, based on a local quantitative analysis of the heating efficiency, water filling meth-od, sewage and utilizing system of the condensing steam turbine unit, the paper puts forward some measures of saving energyand reducing consumption, so as to guide optimization of thermal system, and provide basis for further research about opti-mal operation.

关 键 词：机组热经济性指标 等效焓降法 MATLAB程序设计 节能降耗 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]