自由活塞斯特林热泵的理论与实验研究  

Theoretical and Experimental Research on Free Piston Stirling Heat Pump

作　　者：李珂[1,2] 余国瑶[1] 张益炳 廖旭 戴巍[1] 罗二仓[1] 

机构地区：[1]中国科学院低温工程学重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]中科力函热声技术有限公司,深圳518005

出　　处：《工程热物理学报》2015年第1期41-45,共5页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划973资助项目(No.2010CB227303)

摘　　要：自由活塞斯特林热机取消了传统斯特林热机的曲柄连杆结构,具有结构简单、高效率、高可靠性、寿命长等诸多优点。但目前的研究热点多集中于自由活塞斯特林发动机与制冷机,对自由活塞斯特林热泵的研究关注很少。本文设计了一台电驱动自由活塞斯特林热泵,首次提出并采用了热机部分反向布置的结构,彻底避免了高温端换热器对直线电机造成的不利影响,并给出了实验结果。该热泵在-20~50℃的泵热温差下获得了1.4的整机COP。利用热声理论,本文对该热泵进行了理论计算,并与实验结果进行了对比,初步考察了热泵在不同泵热温差、不同输入电功以及不同运行频率的工作特性。Free-piston Stirling machine has received much attention due to its high efficiency,fuel flexibility,high reliability and long lifetime.However,much research has focused on free piston Stirling generator and free piston Stirling cryocooler.Little attention has been paid to the free piston Stirling heat pump.We have designed and manufactured a 1 kW class free piston Stirling heat pump and tested its performance systematically.A reversed arrangement has been put into practice,which could ensure the linear motor working at ambient temperature.The COP of1.4 was achieved with the heating temperature at 50℃ and the ambient temperature at-20℃.Thermoacoustic theory was used for design and calculation and the results agreed well with the experiments.

关 键 词：斯特林热泵 自由活塞 反向布置 直线电机 热声 

分 类 号：TH38[机械工程—机械制造及自动化]