| 以CO_2为工质的行波热声发动机研究 |
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| 引用本文： | 王波,邱利民,孙大明,刘钰,白昆.以CO_2为工质的行波热声发动机研究[J].工程热物理学报,2009,30(9). |
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| 作者姓名： | 王波 邱利民 孙大明 刘钰 白昆 |
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| 作者单位： | 浙江大学制冷与低温研究所,浙江,杭州,310027 |
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| 基金项目： | 国家自然科学基金重点项目，教育部新世纪优秀人才资助计划 |
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| 摘 要： | 工质对热声发动机的性能有重要的影响.为了进一步增加热声发动机的压力振幅,降低其频率,本文在行波热声发动机中采用CO_2作工质,对采用N_2和CO_2作工质的热声发动机内部声场、压力特性和频率特性进行理论预测,并开展了一系列实验研究.实验结果和理论结果比较吻合,采用CO_2在行波热声发动机中获得1.3的最大压比,对应的压力振幅为0.222 MPa,工作频率降低到18 Hz附近.与N_2相比,采用CO_2提高了行波热声发动机压力振幅的性能.
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| 关 键 词： | 行波 热声发动机 工质 |
STUDY OF A THERMOACOUSTIC ENGINE WITH CO_2 AS WORKING SUBSTANCE |
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| WANG Bo,QIU Li-Min,SUN Da-Ming,LIU Yu,BAI Kun.STUDY OF A THERMOACOUSTIC ENGINE WITH CO_2 AS WORKING SUBSTANCE[J].Journal of Engineering Thermophysics,2009,30(9). |
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| Authors: | WANG Bo QIU Li-Min SUN Da-Ming LIU Yu BAI Kun |
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| Abstract: | Working substance has a great influence on the performance of a thermoacoustic engine (TE).CO_2 was used as working substance to further increase the pressure amplitude of a TE and reduce its frequency.The internal acoustic field,pressure and frequency characteristics of a TE with N_2 and CO_2 were predicted by calculation.Experimental verification was also made.Good agreement between theoretical and experimental results is obtained.With CO_2,the pressure ratio and pressure amplitude of the TE reach 1.3 and 0.222 MPa,and the frequency decreases to 18 Hz.Compared with N_2,the pressure amplitude performance of the TE with CO_2 is improved. |
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| Keywords: | CO_2 travelling wave thermoacoustic engine working substance CO_2 |
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