同轴行波热声制冷机性能实验  

Experimental investigation on coaxial traveling-wave thermoacoustic refrigerator

作　　者：李山峰[1,2] 余波[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学重点实验室,北京100190 [2]北京航天试验技术研究所,北京100074

出　　处：《低温工程》2010年第4期33-36,共4页Cryogenics

基　　金：国家自然科学基金重点项目(NO.50536040);国家杰出青年基金项目(NO.50625620);中科院创新项目(NO.KJCX2-YW2-W02)支持

摘　　要：基于线性热声理论模型,设计了1台结构紧凑的同轴行波热声制冷机。采用行波热声发动机驱动,工作频率在57Hz左右,以平均压力3.0MPa的氦气为工作介质,固定制冷机入口压比为1.075的前提下,研究该制冷机的性能。通过改变惯性管内径,研究惯性管调相对制冷机性能的影响,制冷量随着惯性管内径的增大先增大后减小;研究Gedeon声流对制冷机性能的影响,该声流的存在极大地恶化了制冷机性能,使得制冷机在冷头0℃时,冷量下降11.4%,冷头-20℃时,下降47.66%,冷头温度越低影响越大。A compact coaxial traveling-wave thermoacoustic refrigerator（ TWTAR） was designed on a numerical program,which was based on linear thermoacoustic theory,and experimental investigation on performance of the refrigerator was done,with 3. 0 MPa helium gas and fixed inlet pressure ratio at 57 Hz. Influence of the inner diameter of inertance tube and Gedeon streaming on the performance were studied experimentally. The results show that the cooling power increases at first and then decreases while incresing the inner diameter of inertance tube,and the Gedeon streaming made the cooling power of refrigerator de-crease 11. 4% at 0 ℃,and 47. 66% at -20 ℃.

关 键 词：同轴行波热声制冷机 惯性管 Gedeon声流 

分 类 号：TB651[一般工业技术—制冷工程]