为准确地确定低压省煤器的节能效果，使能源管理双方能更好地分配节能效益，对火电厂烟气余热回收项目节能量检测方法进行研究。以某电厂 N330-16.7/538/538型机组为例，利用能效分布矩阵方程，基于多参数法，建立了低压省煤器回收利用余热系统节能量模型并进行了计算。计算结果与试验数据基本相符，表明多参数法能够满足工程实际需要。通过与已有的几种节能量检测方法及试验法进行比较，证明多参数法有助于对节能量进行准确计算和合理评价。%In order to correctly determine energy-saving effects of low pressure economizer and make both sides of energy management better allocate energy-saving effects,it is meaningful to study detection method for amount of energy-saving of flue gas waste heat recovery in thermal power plant. Taking N330-16.7/538/538 typed unit in some power plant for an ex-ample and on the basis of multi-parameter method,this paper uses energy efficiency distribution matrix equation to establish a model for amount of energy-saving of waste heat recovery system of low pressure economizer and make calculations. The calculation results and experimental data are basically consistent which indicates that this multi-parameter method can satisfy requirements for engineering practice. It is proved the multi-parameter method is useful to make accurate calculation and reasonable evaluation on amount of energy-saving by comparing with existing several detection methods and experimental methods for amount of energy-saving.
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