声学共振型行波热声发动机的实验研究  

Experimental Investigation on Acoustically Resonant Traveling-Wave Thermoacoustic Heat Engine

作　　者：毕天骄[1,2] 吴张华[1] 李东辉[1,2] 罗二仓[1] 戴巍[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

出　　处：《工程热物理学报》2016年第2期227-231,共5页Journal of Engineering Thermophysics

基　　金：北京市自然科学基金面上项目资助(No.3132034);国家高技术研究发展(863)计划(No.2012AA051102)

摘　　要：传统的行波热声发动机具有可靠性好、工质环保、潜在效率高等优点,但系统中存在一根体积较大的谐振管,降低了其功率密度及应用价值。本文设计并搭建了一台新型的声学共振型行波热声发动机,将三个相同的热声发动机核心单元连成环路,中间采用细长谐振管连接。实验中,发动机在100℃以下起振,频率约63 Hz,各压力下得到的最高压比均接近1.3,达到了传统行波热声发动机的最高压比。实验表明,新型的声学共振型行波热声发动机不仅具有传统行波热声发动机的优点,而且结构更加紧凑,具有更好的应用价值。The traditional traveling-wave thermoacoustic heat engine has the advantages of high reliability,environmentally friendly and high efficiency,but the large resonance tube reduces the power density and restrict its application.In this paper,a novel acoustically resonant travehng-wave thermoacoustic heat engine was developed which consisted of three traveling-wave thermoacoustic heat engine units connected end-to-end by three slim resonance tubes.In the experimental,the heat engine started oscillation under 100℃ at 63 Hz,the pressure ratio reached 1.3 under different working pressure which was the highest of traditional traveling-wave thermoacoustic heat engine.The experiment showed that the novel acoustically resonant traveling-wave thermoacoustic heat engine had not only the advantages of traditional traveling-wave thermoacoustic heat engine but a more compact structure and was worthy of application.

关 键 词：行波热声发动机 声学共振 谐振管 压比 

分 类 号：TK123[动力工程及工程热物理—工程热物理]