基于纯热量折合系数的火电机组热力系统分析法  

A method for thermodynamic system analysis in the coal-fired power unit based on pure heat conversion coefficient

作　　者：郭仲德 张树芳 臧与佳[2] 赵贺凯[2] 李响[2] 

机构地区：[1]广东省特种设备检测院锅炉检验室,广东广州510655 [2]华北电力大学电站设备状态监测与控制教育部重点实验室,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2011年第5期65-69,94,共6页Journal of North China Electric Power University：Natural Science Edition

摘　　要：在热力系统的定量分析中,定义了一个重要参数——纯热量折合系数,它表征了纯热量从某级加热器加入系统折合为等效吸热量的比率,也反映了各级回热抽汽的能级。推导了纯热量折合系数通用矩阵,便于计算机程序化计算。利用任一级的抽汽效率和对应级的纯热量折合系数,在不必结合功率方程、吸热量方程的情况下,便能很好地完成热力系统热经济性整体计算和局部定量分析。最后以300 MW机组为例进行了计算分析,验证模型的正确性。In quantitative analysis of thermodynamic system, pure heat conversion coefficient as an important parameter has been defined. The coefficient means the ratio of pure heat converting equivalent heat absorption when pure heat joins into the thermodynamic system from one of heaters, and also reflects energy grade values of extraction steam. By strict mathematics mathematical proof, the general matrix for pure heat conversion coefficient has been derived, and it is convenient to computerize. Using one of extraction steam efficiency and relative pure heat conversion coefficient without power equation and heat absorption equation, thermodynamic system calculation and local analysis can be completed well. A 300 MW unit was taken as an example to illustrate validity of the method.

关 键 词：火电机组 热力系统 热经济性 纯热量折合系数 矩阵法 

分 类 号：TK212[动力工程及工程热物理—动力机械及工程]