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浙江大学学报(工学版)
J4  2011, Vol. 45 Issue (10): 1781-1785    DOI: 10.3785/j.issn.1008-973X.2011.10.014
    
Transition characteristics of oscillation frequency in
standing wave thermoacoustic engine
LAI Bi-hui, QIU Li-min, LI Yan-feng, SUN Da-ming
Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China
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Abstract  

The threshold temperatures of a standing wave thermoacoustic engine at fundamental and second order frequencies with different charge pressures were calculated by using thermoacoustic network theory in order to investigate the onset and frequency transition characteristics of standing wave thermoacoustic engines and understand the conditions for frequency mode transition. The quality factors of the thermoacoustic engine under different conditions were calculated. The onset and the frequency mode transition characteristics under different conditions were analyzed. The onset temperature and the frequency transition characteristics were measured in a selfdesigned standing wave thermoacoustic engine experimentally. The experimental results were used to verify the calculation results. The calculated onset frequencies and the frequency transition characteristics under different charging pressures accorded well with the experimental results.

Published: 01 October 2011
CLC:  TK 1  
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Cite this article:

LAI Bi-hui, QIU Li-min, LI Yan-feng, SUN Da-ming. Transition characteristics of oscillation frequency in
standing wave thermoacoustic engine. J4, 2011, 45(10): 1781-1785.

URL:

https://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2011.10.014     OR     https://www.zjujournals.com/eng/Y2011/V45/I10/1781


驻波热声发动机振荡频率转换特性

为了研究驻波热声发动机的起振特性和频率转换特性,理解频率模态转换发生的条件,根据热声网络理论,对不同充气压力下驻波热声发动机的基频和二阶频率下的阈值温度进行预测.计算在不同充气压力和加热温度下驻波热声发动机的品质因子,分析在不同条件下的起振状态和频率转换特性,并在自行设计的驻波热声发动机实验台上测量起振温度和频率转换条件,将测量结果与计算结果进行对比验证.计算的起振频率和频率转换特性随充气压力的变化趋势与实验结果符合较好.

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