微燃机回热循环的参数估计与性能分析  

Parameter estimation and performance analysis of a recuperative microturbine cycle

作　　者：常有润 张士杰[1,2] 王波 路源[1,2] 赵丽凤 CHANG Yourun;ZHANG Shijie;WANG Bo;LU Yuan;ZHAO Lifeng(Key Laboratory of Advanced Energy and Power(Institute of Engineering Thermophysics),Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院先进能源动力重点实验室(工程热物理研究所),北京100190 [2]中国科学院大学,北京100049

出　　处：《热力发电》2024年第6期87-95,共9页Thermal Power Generation

基　　金：国家科技重大专项(2017-I-0009-0010);中国科学院青年创新促进会(E229020101)。

摘　　要：以某微燃机循环系统试验台为对象,构建了微燃机回热循环系统模型,并基于此开展了回热循环系统的性能预测与分析。考虑到系统的关键部件性能参数未知,利用极大似然估计法,结合实验数据对其进行了估计,所得预测值和实验值的误差在3%以下,表明模型能够较为准确地预测回热循环的热力性能。然后基于建立的模型,开展了全工况的回热循环系统模拟,获得了不同环境温度下随负荷变化时微燃机功率、发电效率、排烟热量和排烟温度等的变化规律以及压气机的工作区间。所获得的微燃机关键部件信息和系统性能变化规律可为相关研究提供一定的参考。By taking the test bench of a micro gas turbine cycle system as the research object,a mathematical model for regenerative cycle system of the micro gas turbine is established.On this basis,the performance prediction and analysis for the regenerative cycle system is carried out.Considering the performance parameters of the system’s key components are presently unknown,the maximum likelihood estimation method is employed to estimate them by using the experimental data.The results show that,the error between the model predicted value and the experimental value is smaller than 3%,indicating the model can accurately predict the thermal performance of the cycle.Subsequently,based on the established model,a performance simulation of the recuperative cycle is conducted under various working conditions.The variation rules of power,generation efficiency,exhaust gas energy,and exhaust gas temperature with the changes of load and ambient temperature are obtained,and the compressor’s operating range is also obtained.The information regarding the key components of the microturbine and the performance characteristics acquired through this study can serve as valuable references for related research.

关 键 词：微燃机 回热循环 实验 参数估计 性能分析 

分 类 号：TK05[动力工程及工程热物理]