1000MW机组回热系统损分布的矩阵方法

基于热力学第二定律的分析法为评价能量转换的"量"和"质"提供了一个统一的尺度,比基于第一定律的能分析法更科学、更合理。根据平衡原理,对于一般的回热系统,建立回热系统中各级加热器的平衡方程,经过严谨的数学推理,获得类似于热力系统汽水分布矩阵的通用的损矩阵方程。该损矩阵方程与回热系统中各级加热器的类型存在一定的对应关系,利用该方程可以方便地得出不同机组回热系统的损分布,为较准确的评价热力系统的热经济性提供有力的依据。

The Matrix Method for Exergy Loss Distribution in Regenerative System of 1000MW Unit

Exergy analysis based on The Second Law of Thermodynamics provides a uniform scale for the "quantity" and "quality" of the evaluation of thermal energy by converting,and is more scientific and more reasonablethan energy analysis method based on the first law.According to the principle of exergy balance for the general heat recovery system,the exergy balance equations of heaters in the regeneration system were established,and after a rigorous mathematical reasoning,General exergy loss matrix equation being similar to the thermal system of the common soft drink distribution matrix was resulted.There is a certain relationship between the exergy loss matrix equation and the type of heaters in the regeneration system.Using this equation,exergy loss distribution of different units can easily come,then,strong basis was provided for More accurate evaluation of thermal economy of the thermal system.