抽汽压损对300MW机组热经济性的影响  

Influence of Thermal Economy Caused by Extraction Pressure Loss on 300MW Thermal Units

作　　者：孙建功 

机构地区：[1]大唐国际张家口发电厂,河北张家口075133

出　　处：《电站辅机》2014年第2期10-15,共6页Power Station Auxiliary Equipment

摘　　要：基于热力系统结构矩阵,通过严密的数学推导,给出了在定流量条件下抽汽压损对机组热经济性影响的计算模型。针对不同型式的加热器,用计算模型进行了定量分析,给出了具体的数学表达式。这种计算模型全面考虑了热力系统及辅助汽水系统的结构特点,反映了因压力损失对机组热经济性的影响。Based on the thermal structure of the matrix system and through rigorous mathematical derivation, we get the calculation model that extraction pressure loss influences thermal economy effect under constant flow. As to different heaters, we get a specific mathematical expression through quantitative analysis of computer model. At the same time, the model takes into account the structure characteristics of thermodynamic system and auxiliary steam water system, which reflects the influence of thermal economy effect caused by pressure loss.

关 键 词：机组 抽汽 压损 热力 系统 经济性 矩阵法 等效焓降 

分 类 号：TM621.4[电气工程—电力系统及自动化]