| 热声制冷机声场中非线性效应 |
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| 引用本文： | 高凡,刘迎文,何雅玲,黄竞.热声制冷机声场中非线性效应[J].工程热物理学报,2008,29(12). |
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| 作者姓名： | 高凡 刘迎文 何雅玲 黄竞 |
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| 作者单位： | 西安交通大学能源与动力工程学院,动力工程多相流国家重点实验室,陕西,西安,710049 |
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| 基金项目： | 国家杰出青年科学基金资助项目，国家自然科学基金重点项目 |
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| 摘 要： | 热声制冷的基本原理是热声效应,但热声效应一般只在高声强下发生,随之将产生强烈的非线性效应.本文在自行研制的热声制冷机试验台上,研究了板叠对声场非线性的影响以及非线性对热声系统性能的影响.结果表明,板叠的存在使得声波明显衰减,压比约减小5%,并且各次谐波的幅值和增长速率较无板叠时均有所降低;非线性效应限制了基波的增长,导致了高次谐波产生,且基波和高次谐波的增长均有发展为饱和的趋势.板叠的存在产生明显的声制冷效果,制冷温度随驱动功率增大先增加后减小.在50 W时达到最低温度5.1℃.
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| 关 键 词： | 热声制冷 非线性 试验 |
NONLINEAR EFFECT IN A THERMOACOUSTIC REFRIGERATOR |
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| GAO Fan,LIU Ying-Wen,HE Ya-Ling,HUANG Jing.NONLINEAR EFFECT IN A THERMOACOUSTIC REFRIGERATOR[J].Journal of Engineering Thermophysics,2008,29(12). |
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| Authors: | GAO Fan LIU Ying-Wen HE Ya-Ling HUANG Jing |
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| Institution: | GAO Fan LIU Ying-Wen HE Ya-Ling HUANG Jing (State Key Laboratory of Multiphase Flow in Power Engineering,Xi\'an Jiaotong University.Xi\'an 710049,China) |
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| Abstract: | Thermoacoustic refrigerators based on thermoacoustic effect generally work with high amplitude sound waves,which could go with intense nonlinearities.In present work,an experimental apparatus of thermoacoustic refrigeration was built up to investigate the effect of stacks on nonlinear- ities and the effect of nonlinearities on the performance of thermoacoustic refrigerator.Experimental results indicate that while with stacks in the resonator,acoustic wave amplitudes are weakened,pres- sure ratios are cut do... |
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| Keywords: | thermoacoustic refrigeration nonlinear effect experiment |
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