Principal characteristics of thermoacoustic sound generator and refrigerator's application

The simplified thermoacoustic refrigerator and sound generator is introduced and the characteristics of this equipment are evaluated in this paper. A continuous oscillatory sound in the resonance tube generated by a thermoacoustic engine was converted to cold heat using a thermoacoustic refrigerator. This concept involves a refrigerator without a refrigerant and moving parts, which is different from the currently popular, conventional refrigerant cycle. The performance of the thermoacoustic system is experimentally examined, and then theoretically estimated based on the experimental results. The purpose of this study is to find an optimal system configuration and system condition to achieve a high-performance thermoacoustic refrigerator and sound generator. The characteristics and performance of a thermoacoustic sound generator and refrigerator are evaluated separately from the experimental and theoretical point of view in this paper.