1000MW机组回热系统损分布的矩阵方法

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

热力学第二定律的分析法,对能量中的传递、利用、转换的评价提供了统一的标准。根据平衡关系,对一般的回热系统,列出回热系统中各级加热器的平衡方程,经过严谨的数学推理,获得通用的损矩阵方程。结合N1000-25/600/600机组,根据已推导的损矩阵分布方程简洁方便地计算出该机组回热系统的损分布和效率,为评价回热系统热经济性提供有力的依据。

Exergy analysis based on The Second Law of Thermodynamics provides a uniform scale for the evalua- tion of thermal energy by exergy transfer, utilization and conversion. According to the relationship of exergy bal- ance, the exergy balance equations of heaters are listed for the general heat recovery system. After a rigorous math- ematical reasoning, general exergy loss matrix equation is gained. On the basis of the received general exergy loss matrix equation, exergy loss distribution and exergy efficiency of regenerative system are easily calculated on N1000 -25/600/600 unit, and provide strong basis for the evaluation of thermal economy of regenerative system.