250 W空间自由活塞斯特林发电机模拟与实验研究  

Simulation and experimental research on 250 W space free piston Stirling generator

作　　者：焦珂欣 牟健[1] 池春云 林明嫱 杨明卓 李瑞杰[1,2] 洪国同 Jiao Kexin;Mou Jian;Chi Chunyun;Lin Mingqiang;Yang Mingzhuo;Li Ruijie;Hong Guotong(Key Laboratory of Technology on Space Energy Conversion,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院理化技术研究所,中国科学院空间功热转换技术重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《低温工程》2022年第5期1-7,共7页Cryogenics

基　　金：国家重点研发计划资助(2020YFB1901800)。

摘　　要：为建设高效的空间能源系统,利用Sage软件设计了一台250 W空间自由活塞斯特林发电机,并对其进行了模拟研究,然后搭建了实验系统对其性能进行了测试,并与模拟结果进行了对比,研究了关键参数对发电机输出性能和稳定运行特性的影响规律。研究结果表明,发电机的输出功率和效率随加热功率的增加而增大,随充气压力、配气活塞板簧刚度、配气活塞杆直径以及膨胀腔初始长度的增加而减小,而发电机的热端温度和运行频率随上述参数的改变则均呈现单调的趋势。经过初步的优化,该发电机的最高输出功率达到275.1 W,热电转换效率达到23.14%。In order to build efficient space energy system,a 250 W space free piston Stirling generator was designed and simulated to study its performance using Sage software,then an exper-imental system was built to test its performance,which is compared with the simulation results to study the influence of key parameters on the generator output performance and stable operation characteristics.The results show that the output power and efficiency of the generator increase with the heating power,and decrease with the charge pressure,spring stiffness,rod diameter of the displacer and initial length of the expansion space,while the hot end temperature and operat-ing frequency of the generator show monotonic trends with the change of the above parameters.After preliminary optimization,the generator achieves a maximum output power of 275.1 W and a thermoelectric conversion efficiency of 23.14%.

关 键 词：自由活塞斯特林发电机 Sage模拟 实验测试 热端温度 运行频率 

分 类 号：TB65[一般工业技术—制冷工程] TB663