本文使用RC负载法首先在不同压比下对发动机的输出声功与负载之间的匹配关系进行了深入研究,研究表明发动机存在高效区和效率低下区.针对行波热声制冷机的阻抗进行了分析,发现由于制冷机阻抗处于发动机的效率低下区,使得发动机输出效率很低,从而导致整机效率低下,其中在发动机和制冷机之间的1m长连接管起到了调节负载阻抗和放大声压的作用,但其调节作用有限.
In this paper,the matching relationship between output power of a traveling-wave thermoacoustic engine and a RC load has been investigated.Then,the impedance of a traveling-wave thermoacoustic refrigerator has been analyzed.The result shows that the refrigerator and the engine are ill-matched.thus efficiency of the engine and the overall efficiency of the whole system are lOW.The result also shows that the 1-meter pipe connecting the engine and the refrigerator can adjust the load impedance and amplify the pressure;however,its effect is rather limited.
参考文献
| [1] | LUO Ercang;HUANG Yun;DAI Wei;ZHANG Yong;WU Zhanghua .A high-performance ther-moacoustic refrigerator operating in room-temperature range[J].Chinese science bulletin,2005(22):2662-2664. |
| [2] | Luo E C;Dai W;Zhang Y et al.Thermoacoustically Driven Thermoacoustic Refrigerator with Double Thermoacoustic-Stirling Cycles[J].Applied Physics Letters,2006,88:07412. |
| [3] | 余国瑶;戴巍;罗二仓.室温行波热声制冷机热缓冲管试验研究[A].重庆,2006:721-725. |
| [4] | LUO Ercang;LING Hong;DAI Wei .A high pressure-ratio, energy- focused thermoacoustic heat engine with a tapered resonator[J].Chinese science bulletin,2005(3):284-286. |
| [5] | 李山峰,吴张华,罗二仓,戴巍,于波.行波热声发动机声功输出特性研究[J].工程热物理学报,2008(04):545-548. |
| [6] | Wei Dai;Ercang Luo;Guoyao Yu .A simple method to determine the frequency of engine-included thermoacoustic systems[J].Cryogenics,2006(11):804-808. |
| [7] | A novel coupling configuration for thermoacoustically-driven pulse tube coolers: Acoustic amplifier[J].科学通报（英文版）,2005(18):2112-2114. |
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