摘要
为了对超临界二氧化碳布雷顿循环发电系统热力学进行分析,首先构建了分流再压缩和一次再热耦合的超临界二氧化碳布雷顿循环系统主要关键部件的数学分析模型,并基于Matlab软件进行计算分析。分别讨论了系统主要关键参数对系统循环效率的影响。从仿真结果可以看出存在最佳的分流系数,最优的压缩机入口温度、压力和再热压力,使得循环系统具有较高的循环效率。最后为能够全面地反映系统综合性能,引入了遗传算法作为优化分析方法,研究多参数对系统循环效率的综合影响,得到最高效率点的最优关键参数。
In order to analyze the thermodynamics of supercritical carbon dioxide Brayton cycle power system.Firstly,the mathematical analysis model of the key components of the supercritical carbon dioxide Brayton cycle system with recompression and reheat coupling is constructed,and the calculation and analysis are carried out based on the software of Matlab.The effects of the main key parameters of the system on system cycle efficiency are discussed.From the simulation results,it can be seen that there is an optimal split coefficient,the optimal inlet temperature,pressure and reheat pressure of compressor make the cycle system have a higher efficiency.Finally,in order to fully reflect the comprehensive performance of the system,genetic algorithm is introduced as an optimization analysis method to study the comprehensive impact of multi-parameters on the system cycle efficiency,and the optimal key parameters of the highest efficiency point are obtained.
出处
《节能》
2019年第8期34-38,共5页
Energy Conservation
基金
中核集团自主研发项目“基于钠冷快堆的超临界二氧化碳动力发电系统可行性研究”(项目编号:2017-586)
关键词
超临界氧化碳
布雷顿循环
分流系数
遗传算法
supercritical carbon dioxide
Brayton cycle
split coefficient
genetic algorithm
