基于等效焓降法的1000MW机组不同工况下的热经济性分析

Thermal economy analysis of 1000MW unit under different working conditions based on equivalent enthalpy drop method

我国是一个能源生产和消费大国,在能源越来越紧张的今天,节能减排刻不容缓。以1000MW机组的2种不同工况THA工况和50%THA工况为例,用等效焓降的方法对机组的热经济性进行分析及对比,得出机组各加热器的抽气效率,分析能量利用程度,得出机组的8#低压加热器的节能潜力相对较大,可优先改造,为相关火电机组的热经济分析及改造提供一定的参考。

China is a big country of energy production and consumption,so energy- saving and reducing pollution is imperative,when energy becomes more and more prominent. Using energy effectively and thermal economy have a great practical significance. The paper takes the THA and 50% THA conditions of the N1000 MW unit as the example to analyze and compare the thermal economy of the unit with the equivalent enthalpy drop method. The purpose is to get the pumping efficiency for analyzing the energy utilization degree. From the calculation results of thermal economy,the exchanger No. 8 can be transformed in the unit. The paper has certain referential value in the relevant pow er plant.