超临界二氧化碳再压缩布雷顿循环多目标优化  

Multi-objective Optimization for Supercritical Carbon Dioxide Recompression Brayton Cycle

作　　者：张淑荣[1] 孙业山 谭鲁志 王明涛 臧航宇 李雅楠 Zhang Shurong;Sun Yeshan;Tan Luzhi;Wang Mingtao;Zang Hangyu;Li Yanan(School of Food Engineering,Ludong University,Yantai 264025,Shandong Province,China;Yantai Longyuan Power Technology Co.,Ltd.,Yantai 264006,Shandong Province,China;School of Ocean,Yantai University,Yantai 264000,Shandong Province,China)

机构地区：[1]鲁东大学食品工程学院,山东烟台264025 [2]烟台龙源电力技术股份有限公司,山东烟台264006 [3]烟台大学海洋学院,山东烟台264000

出　　处：《发电设备》2022年第1期1-5,共5页Power Equipment

基　　金：山东省自然科学基金(ZR2020ME171,ZR2020ME177,ZR2014EEP026)。

摘　　要：建立超临界二氧化碳再压缩布雷顿循环多目标优化模型,研究分流系数、循环压比、主压缩机吸气压力和膨胀机入口温度对系统性能的影响规律,并进行综合评价。结果表明:随着分流系数的增大,多目标函数先增大后减小,同时分流系数具有最优值;随着主压缩机吸气压力的增加,多目标函数和系统热效率均降低;膨胀机入口温度越高,多目标函数越小;4个关键参数对回热器效能和系统性能有较大影响。A multi-objective optimization model was established for the optimization of the supercritical carbon dioxide recompression Brayton cycle, and the effects of following key parameters on the performance of the system were researched, such as the split ratio, the pressure ratio, the inlet pressure of the main compressor and the inlet temperature of the turbine. After which, the comprehensive evaluation was carried out.Results show that, with the increase of the split ratio, the multi-objective function increases at first and then decreases, and the split ratio has an optimal value. With the increase of the inlet pressure of the main compressor, the multi-objective function and the system thermal efficiency both decrease. The higher the inlet temperature of the turbine is, the lower the multi-objective function will be. Four key parameters all have a great effect on the effectiveness of the regenerator and the performance of the cycle.

关 键 词：超临界二氧化碳 布雷顿循环 再压缩 多目标函数 分流系数 系统热效率 

分 类 号：TK123[动力工程及工程热物理—工程热物理]