热力系统疏水方式的热经济性分析  

Heat Economic Analysis of Drainage Recycling Mode in Thermal System

作　　者：刘振刚[1] 李太兴[1] 王俊有[1] 

机构地区：[1]华北电力大学动力系,河北保定071003

出　　处：《电站辅机》2007年第4期1-2,43,共3页Power Station Auxiliary Equipment

摘　　要：热力系统疏水回收方式对机组的热经济性有很大的影响。使用疏水冷却器,可以降低疏水温度,达到回收疏水热量的目的,疏水泵则因其能够截流疏水而达到接近混合式加热器的抽汽热量利用效果。文中通过热平衡法和等效热降法对不同疏水回收方式的循环热效率进行了计算比较,为热力系统的节能改造提供定量数据支持。并以热平衡法为基准.对等效热降法的计算误差进行了分析。Thermal system drainage recycling mode has a great influence on heat economy of a power unit 54 cooler can be used to decrease the temperature to recycle drainage heat and drainage pump which can intercept drainage to approach the effect of extraction heat utilizing of combined heater. The heat efficiency of different modes of drainage recycling is calculated and analyzed with heat balance method and equivalent enthalpy drop method in this paper, which provides the quantitative date for thermal system energy saving and transformation. And on the basis of heat balance method, the calculating inaccuracy of equivalent enthalpy drop method is analyzed.

关 键 词：热力 系统 疏水 方式 热平衡 经济性 

分 类 号：TM621[电气工程—电力系统及自动化]