Vibration analysis of speaker-driven thermoacoustic heat pump

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  • スピーカー駆動型熱音響ヒートポンプの振動解析

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<p>Noise countermeasures are an important engineering problem, and acoustic analysis methods for noise prediction and reduction have been widely studied. In a thermoacoustic engine, the sound is generated when the air vibrates due to the temperature gradient inside the pipe. Applying this effect may reduce noise by using the temperature distribution. Therefore, the purpose of this study is to analysis an acoustic space with a temperature gradient using a concentrated mass model. In previous study, we built a linear model of an acoustic tube with temperature gradient and validate the proposed model by numerical calculation of heat storage device in a cylindrical pipe. In this report, we propose the analysis method of thermoacoustic heat pump applying the previous model. This model in constant temperature is validated by comparison with the experimental result. Also, we consider thermoacoustic heat pump phenomena from the viewpoint of heat flux.</p>

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