基于多参数法电厂烟气余热回收节能量检测方法

Detection Method for Amount of Energy-saving of Flue Gas Waste Heat Recovery in Power Plant Based on Multi-parameter Method

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.