火电厂再热机组的定热量等效热降矩阵方程

摘要

Considering the application limitation of constant-heat equivalent enthalpy drop theory in quantitative analysis of power plant thermal systems, a universal matrix for energy loss of auxiliary steam-water components was derived under constant-heat conditions, based on which a matrix equation was established so as to complete the equivalent enthalpy drop theory. The matrix equation contains all information of main and auxiliary systems and corresponds with the structure of actual thermodynamic system. With strong versatility and regularity, the equation is suitable for computer programming calculation and development of universal computer software, which has been proved to be practicable by taking a 600 MW reheat unit as an example.%考虑到定热量等效热降理论在火电厂热力系统定量分析计算中的局限性,采用严格的数学推演,推导了定热量条件下辅助汽水做功损失的通用矩阵.在此基础上,建立了定热量等效热降矩阵方程,完善了定热量等效热降的理论体系.该矩阵方程包含了主系统和辅助汽水系统的所有信息,与实际热力系统结构一一对应,具有很强的通用性和规律性,适合于计算机编程计算和通用性计算软件的开发.以某600 MW再热机组为例进行算例分析,并验证该矩阵方程的正确性.