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中文摘要：
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1 m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。
英文摘要：
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.
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