气-液双作用行波热声发动机实验特性的研究  

Experimental Investigation of a Gas-Liquid,Double-Acting Traveling-Wave Thermoacoustic Heat Engine

作　　者：李东辉[1,2] 罗二仓[1] 陈燕燕[1] 吴张华[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》2013年第12期2218-2222,共5页Journal of Engineering Thermophysics

基　　金：国家科技部基础研究计划项目(No.2010CB227303);国家重大自然科学基金项目(No.50890181)

摘　　要：气液双作用行波热声发动机解决了传统热声发动机低频下谐振管尺寸较长、工作介质不理想以及与负载匹配困难等一系列问题,结构紧凑,功率密度高.本文设计搭建了世界首台气-液双作用行波热声发动机实验台并进行了无负载情况下的实验研究,分别测量了发动机的起振温度、谐振频率、热端温度、压力波动幅值和相位等参数随平均压力和加热量的变化情况,各压力下谐振频率均小于23 Hz,起振温度低于100℃,在1.5 MPa、1200 W加热工况下,得到1.45的压比,性能远优于传统的行波热声发动机。The gas-liquid, double-acting traveling-wave thermoacoustic heat engine has solved the problems of the traditional one as too long resonator at low frequency, not ideal working gas and difficulty in load matching; meanwhile it has compact structure and high power density. In this paper, we have designed and set up the gas-liquid, double-acting traveling-wave thermoacoustic heat engine at the first time in the world and did the experimental investigation under no load condition. We measured the starting oscillation temperature, resonant frequency, heating temperature, pressure amplitude and phase angle of the engine varying with the mean pressure and heating power. In each case, the resonant frequency is less than 23 Hz and starting oscillation temperature is lower than 373 K. Under mean pressure 1.5 MPa, heating power 1200 W condition, we get the pressure ratio 1.45 which is much better than the performance of the traditional thermoacoustic heat engine.

关 键 词：双作用 行波 热声发动机 压比 

分 类 号：TK123[动力工程及工程热物理—工程热物理]