各级抽汽等效热降的简捷算法  

Brief calculating method of each extraction steam equivalent heat drop

作　　者：韩中合[1] 闫丽涛[1] 史志杰[2] 

机构地区：[1]华北电力大学能源与动力工程学院,河北保定071003 [2]河北电力勘测设计研究院,河北石家庄050031

出　　处：《华北电力大学学报（自然科学版）》2010年第2期59-62,共4页Journal of North China Electric Power University：Natural Science Edition

摘　　要：在对热力系统进行局部定量分析之前需要首先确定新蒸汽的等效热降和各抽汽段的等效热降。由于各抽汽段等效热降的传统算法比较繁琐,通过深入研究等效热降理论,应用线性代数理论导出了一种求取各抽汽段等效热降的简捷算法,该方法能够针对不同的热力系统进行迅速准确的计算,适用于一次再热机组,非再热机组,供热机组及超临界二次再热机组等任何类型的机组,对于变工况运行也是适用的,具有很好的通用性。最后,采用该简捷方法,对某一次再热机组进行了验证。It is necessary to ascertain equivalent heat drop of live stream and every extraction steam before the partly quantitative analysis of thermal system. Based on linear algebra theory, with deeply study of equivalent heat drop the- ory, a brief method of calculating each extraction steam equivalent heat drop was given as to the fussy calculated pro- eess of traditional method. This brief calculating method has great universal performance; it can calculate rapidly and accurately as to different thermal system and different changing operating mode.s. It was used to any kind of units, just as reheated units, nonreheated units, heat supply units and hypercritical double reheated units and so on. Finally, an example of a reheated unit was given to illustrate validity of this method.

关 键 词：抽汽等效热降 传统算法 简捷算法 热力系统 

分 类 号：TK212[动力工程及工程热物理—动力机械及工程]