行波热声发动机驱动制冷机的匹配研究  

INVESTIGATION OF THE MATCHING RELATIONSHIP BETWEEN A TRAVELLING-WAVE THERMOACOUSTIC ENGINE AND REFRIGERATOR

作　　者：李山峰[1,2] 吴张华[1] 罗二仓[1] 戴巍[1] 

机构地区：[1]中国科学院理化技术研究所低温工程重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《工程热物理学报》2009年第11期1818-1820,共3页Journal of Engineering Thermophysics

基　　金：国家杰出青年基金项目(No.50625620);国家自然科学基金重点项目(No.50536040);中科院创新项目(No.KJCX3)

摘　　要：本文使用RC负载法首先在不同压比下对发动机的输出声功与负载之间的匹配关系进行了深入研究,研究表明发动机存在高效区和效率低下区。针对行波热声制冷机的阻抗进行了分析,发现由于制冷机阻抗处于发动机的效率低下区,使得发动机输出效率很低,从而导致整机效率低下,其中在发动机和制冷机之间的1 m长连接管起到了调节负载阻抗和放大声压的作用,但其调节作用有限。In this paper, the matching relationship between output power of a traveling-wave thermoacoustic engine and a RC load has been investigated. Then, the impedance of a traveling-wave thermoacoustic refrigerator has been analyzed. The result shows that the refrigerator and the engine are ill-matched, thus efficiency of the engine and the overall efficiency of the whole system are low. The result also shows that the 1-meter pipe connecting the engine and the refrigerator can adjust the load impedance and amplify the pressure; however, its effect is rather limited.

关 键 词：行波热声发动机 行波热声制冷机 阻抗匹配 

分 类 号：TK123[动力工程及工程热物理—工程热物理]