600MW火电机组抽汽供热的热经济性分析  

Thermoeconomic Analysis for A Coal-fired 600MWe CHP Power Plant

作　　者：李代智[1] 周克毅[1] 徐啸虎[1] 韦红旗[1] 

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《汽轮机技术》2008年第4期282-284,共3页Turbine Technology

摘　　要：针对亚临界和超临界600MW机组抽汽供热,运用常规热平衡法对不同抽汽方案的机组热经济性进行分析、计算,并对结果进行比较,说明抽汽供热能提高电厂的热经济性,且再热器冷段抽汽供热的经济性高于再热器热段抽汽。建议在安全性和经济性的基础上,合理选择抽汽供热方案,为电厂的供热改造提供经济性依据。Applications of combined heat and power system in both subcritical and supercritical 600MW units are proposed. Based on the energy balance method, the paper presents a detailed calculation and analysis of the thermal cycle. Results prove that both project can increase the circulation efficiency of power plant , and project of steam extraction with low parameters is prior to that of high parameters. It also suggests that correct selection of each project should be based on both factors of safety and economy. It provides the basis of technological improvement for power plants.

关 键 词：大容量 火电机组 热电联产 节能 热平衡法 热经济性分析 

分 类 号：TK212[动力工程及工程热物理—动力机械及工程]