基于单元分析模型回热系统节能诊断

The Energy-saving Diagnosis of Regenerative System Based on The Unit Model of Exergy Analysis

电厂运行的经济性已经日显重要。回热系统作为电厂热力系统中的主要系统之一,它对全厂的经济运行产生着很大影响,因此,回热系统经济性分析是电厂节能工作中的重要部分。以某热电厂机组的回热系统为研究对象,给出了系统的单元划分方法和通用的单元分析控制体模型,导出了通用的性能评价指标计算式,以实际计算说明了基于单元分析模型的节能潜力诊断方法。该方法可以找出系统能量损失的关键部位,为电厂热力系统节能分析提供一条依据。

In power plant, operation economy already gradually appears important. The regenerative system is of great importance to the economy as a major part of coal-fired power unit. It is an important task to analyze the economic performance of the regenerative system in energy-saving studies. The partition method of equipment unit in system was given by giving an example of regenerative system in a power plant and the general control model of equipment unit on basis of exergy analysis in this thesis. The general mathematical equation was deduced . The formula could be used for analyzing the rule of exergy losses distribution in the regenerative system and finding the weak link at the aspect of thermodynamics in regenerative system. The thesis provides reasonable theory basis and simple method for the energy-saving work in power plant.