二次再热机组的定热量等效热降矩阵方程

Constant-heat equivalent enthalpy drop matrix equation for power unit with double reheat

基于定热量等效热降理论,结合矩阵法,导出了二次再热机组的定热量等效热降矩阵方程,应用该方程无须另列吸热量方程和功率方程的情况下便能完成二次再热机组的热经济性分析,从而为此类机组热力系统的经济性定量分析提供了新方法,扩展了定热量等效热降理论的应用范围。通过实例计算验证了本文计算模型的可靠性,具有通用、精确和适于计算机计算的特点。

Based on constant-heat equivalent enthalpy drop method and matrix method, constant-heat equivalent en- thalpy drop matrix equation for power unit with double reheat was derived from strict mathematics deduction and demon- stration. Using this matrix without power equation and heat absorption equation, the thermal economic analysis of doub- le reheat unit can be completed well. In this way, a new method of thermal economic quantitative analysis was provid- ed, so the scope of application of constant-heat equivalent enthalpy drop method was extended. Through some case cal- culations, the reliability of the model proved that it is common, accuracy and suitable for computer calculation.