改进型驻波热声发动机的实验研究  

EXPERIMENTAL STUDY OF AN IMPROVED STANDING WAVE THERMOACOUSTIC ENGINE

作　　者：戴巍[1] 罗二仓[1] 胡剑英[1] 张泳[1] 吴张华[1] 黄云[1] 

机构地区：[1]中国科学院理化技术研究所,北京100080

出　　处：《工程热物理学报》2005年第3期376-378,共3页Journal of Engineering Thermophysics

基　　金：中科院知识创新工程重要方向性项目资助(No.KJCX2-SW-W12-1)

摘　　要：压比是热声发动机性能的一个重要衡量参数。驻波发动机由于自身热力过程的不可逆性,使得目前所能获得的压比通常都比较低。笔者认为除了发动机各部件的尺寸参数之外,换热器的换热性能也是影响发动机压比的一个重要参数。因此本文对驻波热声发动机的换热器进行了改进设计,增强了加热器与工作介质的换热效果,系统的工作压比有了较大的提高。采用氦气、氮气和二氧化碳作为工质,其压比分别达到了1.15、1.22和1.215。Pressure ratio is an importance parameter for evaluating the performance of a thermoacoustic engine. Because of its intrinsic thermodynamic irreversibility, the pressure ratio provided by a standing wave thermoacoustic engine is generally rather low. The authors think the heat exchangers also play an important part in the performance of the engine. In this paper, the heat exchanger design is improved by using electric discharge machining, which in turn improves the system performance. By using helium, nitrogen and carbon dioxide as the working gas, the standing wave thermoacoustic engine's pressure ratio reaches 1.15, 1.22, and 1.21 respectively.

关 键 词：驻波发动机 换热器 板叠 

分 类 号：TK123[动力工程及工程热物理—工程热物理]