| Applied Mechanics |
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| Characteristics study on the oscillation onset and damping of a traveling-wave thermoacoustic prime mover |
| Tao JIN, Chang-song MAO, Ke TANG, Hao ZHENG, Guo-bang CHEN |
| Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China |
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Abstract This paper focuses on the temperature and pressure characteristics of a Swift-Backhaus type traveling-wave thermoacoustic prime mover during its onset and damping processes, in order to understand the intrinsic mechanism of thermoacoustic oscillation onset and the feasibility of using low-grade thermal energy based on a low onset temperature. The influences of heat input and filling pressure on hysteretic loop, due to the noncoincidence between onset and damping processes, are measured and analyzed. The condition for the occurrence of hysteresis is also briefly discussed.
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Received: 19 January 2008
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