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中文摘要：
我们探索发作的特征并且在一台白手起家的看台波浪 thermoacoustic 引擎的全面研究致冷剂在周围的温度上面驾驶而不是常规热来源的一台 thermoacoustic 引擎(TE ) 抑制由液体开车氮。实验验证在低温实验法的温度提高 thermoacoustic 摆动的可行性。沿着 TE 的栈的发作温度差别显著地减少，与高温度的热来源驾驶的常规 TE 的相比。致冷剂驱动的 TE 的回声频率比 heat-source-driven TE 的小，主要由于工作气体的更低的平均温度。实验和计算表演在发作之间的温度差异并且抑制被线性温度分发部分在抑制前沿着栈引起，和在发作前的非线性的分发。这些结果将贡献 thermoacoustic 摆动并且到致冷剂的冷精力的恢复的更好的理解。
英文摘要：
We explore characteristics of onset and damping in a thermoacoustic engine （TE） driven by cryogens instead of conventional heat sources above the ambient temperature by a comprehensive study of a self-made standing-wave thermoacoustic engine driven by liquid nitrogen. The experiments verify the feasibility of enhancing the thermoacoustic oscillation at cryogenic temperatures. The onset temperature difference along the stack of the TE significantly decreases, compared with that of a conventional TE driven by high-temperature heat sources. The resonance frequency of the cryogen-driven TE is smaller than that of the heat-source-driven TE, mainly due to the lower average temperature of the working gas. Experiments and calculations show that the temperature discrepancy between onset and damping is partly caused by the linear temperature distribution along the stack before damping, together with the nonlinear distribution before onset. These results will contribute to a better understanding of thermoacoustic oscillation and to the recovery of the cold energy of cryogens.
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