不同工质和蓄热介质下AA-CAES三联产系统特性研究  

Research on Characteristics of AA-CAES System Under Different Working Mediums and Heating Storage Mediums

作　　者：李鹏[1,2] 胡庆亚[1] 韩中合 LI Peng;HU Qingya;HAN Zhonghe(School of Energy,Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China;Hebei Provincial Key Laboratory of Low-Carbon and Efficient Power Generation Technology,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003 [2]华北电力大学河北省低碳高效发电技术重点实验室,河北保定071003

出　　处：《动力工程学报》2022年第4期372-379,共8页Journal of Chinese Society of Power Engineering

基　　金：河北省自然科学基金资助项目(E2018502059)。

摘　　要：为研究基于先进绝热压缩空气储能(AA-CAES)的三联产系统在不同工质和蓄热介质下的运行特性,以空气和CO_(2)为工质,水和THERMINOL 66为蓄热介质,提出4种运行方案,并采用能量分析和(火用)分析方法比较4种运行方案下系统的性能差异,研究低温蓄热介质温度和对流传热系数对系统性能的影响,最后以(火用)效率和储能密度为目标函数,采用非支配排序遗传算法(NSGA-II)进行多目标优化。结果表明:以空气为工质、水为蓄热介质时,系统(火用)效率和储能密度最高;4种运行方案中第二级换热器产生的(火用)损均最大;低温蓄热介质温度越低,(火用)效率越高,而储能密度越低;对流传热系数增加时,(火用)效率随之降低,而储能密度先降低后升高;当采用较低温度的蓄热介质和中等对流传热系数时,系统可获得最优性能。In order to study the operating characteristics of the tri-generative system based on advanced adiabatic compressed air energy storage(AA-CAES) under different working mediums and heating storage mediums, four operation schemes were proposed with air and carbon dioxide(CO_(2)) as working mediums and water and THERMINOL66 as heating storage mediums. The energy analysis and exergy analysis methods were used to compare the system performance differences under the four operation schemes, and to study the influence of the temperature of the low-temperature heat storage medium and the convective heat transfer coefficient on the system performance. Finally, non-dominated sorting genetic algorithm-II(NSGA-II) was adopted for multi-objective optimization of the tri-generative system with exergy efficiency and energy storage density as objective functions. Results show that the exergy efficiency and energy storage density of the system are the highest when air is the working medium and water is the heating storage medium. The maximum exergy destruction is generated by the second-stage heat exchanger in the four operating schemes. The lower the temperature of the low-temperature heating storage medium, the higher the exergy efficiency, and the lower the energy storage density. When the convective heat transfer coefficient increases, the exergy efficiency decreases, while the energy storage density firstly decreases and then increases. The optimal performance of the system is obtained when a lower temperature heating storage medium and a moderate convective heat transfer coefficient are applied.

关 键 词：AA-CAES 三联产系统 运行特性 多目标优化 

分 类 号：TK02[动力工程及工程热物理]