热力发电Issue(8)：74-78,5.DOI:10.3969/j.issn.1002-3364.2015.08.074
超超临界1000 MW机组梯次循环热力系统能损分析及优化
Energy loss analysis and optimization on an ultra supercritical 1 000 MW unit thermal system using echelon cycle
摘要
Abstract
The energy grade efficiency method was applied to carry out energy loss analysis for thermal sys-tem of an ultra supercritical 1 000 MW unit with one reheat under THA condition.The energy loss value of the system under the above condition was obtained and the calculation accuracy of this energy grade effi-ciency method was verified.Moreover,a thermodynamic optimization method using pattern search was pro-posed for design of the cylinder pressure and extraction pressure.The result shows that,after the optimiza-tion,the heat rate of the echelon cycle thermal system dropped from 7 218.43 kJ/(kW•h)to 7 177.22 kJ/(kW•h) significantly,on the premise of satisfying the relative requirements from the factories.关键词
超超临界/1 000 MW机组/梯次循环/热力系统/热耗率/能级效率Key words
ultra-supercritical/1 000 MW unit/echelon cycle/thermal system/heat rate/energy grade effi-ciency分类
能源科技引用本文复制引用
杨宇,夏晓华,蒋俊..超超临界1000 MW机组梯次循环热力系统能损分析及优化[J].热力发电,2015,(8):74-78,5.基金项目
国家核电技术创新项目(SNP-KJ-CX-2015-20) （SNP-KJ-CX-2015-20）
