【摘要】 热声驱动器是利用热声效应把热能转化为声能的动力装置,因其不含运动部件,具有结构简单和运行可靠等优点而倍受关注。本文研究的新型行波型热声驱动器在效率方面比驻波型热声驱动器有很大的提高。在简要回顾行波型热声驱动器的发展历史之后,详细介绍了一实验系统的结构和设计情况,并在研制成的实验装置上开展了初步的实验研究,成功获得了热声振荡,以氦气和氮气为工质,得到频率分别为66Hz和23Hz的压力振荡。此外,还考察了压力振幅受加热功率和加热温度的影响,以及安装喷射泵前后的对比实验情况。更多还原

【Abstract】 Thermoacoustic prime mover can convert thermal energy into acoustic energy through thermoacoustic effect. It attracts more attentions due to the advantages of its lack of moving component, and then simplicity and stability. Compared with standing-wave thermoacoustic prime mover, the new traveling-wave thermoacoustic engine, which is the topic of present experimental study, is thought to be capable of achieving much higher efficiency. Following a short review, emphasis is made on design and fabrication of an experimental setup of the thermoacoustic-Stirling prime mover. And we have successfully obtained pressure oscillation from preliminary tests, i.e., oscillations of 66 Hz and 23 Hz, with helium and nitrogen as working fluid, respectively. The influence of heating power, heating temperature and jet pump has also been investigated.更多还原