火电机组辅助汽水强度矩阵的研究及其应用

A Study of Auxiliary Steam-water Intensity Matrix in a Thermal Power Plant and its Applications

辅助汽水系统是火电机组热力系统的重要组成部分,分析其对发电煤耗率的影响具有重要的现实意义。然而,传统的热经济性计算方法均在不同程度上存在一定的局限性,针对现有计算方法的不足,提出火电机组辅助汽水强度矩阵。通过对不同容量典型火电机组的实例计算,结果表明:该计算模型不必对热力系统建立能量平衡与质量平衡方程,计算量小,计算简单快捷,计算精度高,通用性强。它为火电机组的节能降耗,特别是辅助汽水系统的定量分析计算提供了一种新的工具。

An auxiliary steam-water system is an important integral part of the thermodynamic system in a thermal power plant.It is of major realistic significance to analyze the influence of the system in question on the coal consumption rate in power generation.However,the traditional thermal-economy calculation methods all have its limitations to some extent.In the light of the shortcomings of the currently prevailing calculation methods,an auxiliary steam-water intensity matrix for thermal power plants has been proposed.Through specific case calculations of typical thermal power plants with different installed capacities,it can be shown that the calculation model does not need to establish an energy conservation and mass balance equation for the thermodynamic system,enjoying such specific features as small calculation work load,simple and quick calculation,high calculation accuracy and great versatility.The model can provide a new tool for attaining energy savings and energy consumption reduction of thermal power plants,especially for performing a quantitative analysis and calculation of the auxiliary steam-water system.