Thermoacoustic system is a system utilizing thermoacoustic phenomenon which is a mutual energy conversion phenomenon of heat and sound. To realize the thermoacoustic phenomenon, a device called a stack having many narrow flow paths is used. In the study of the conventional thermoacoustic system, temperature distribution inside stack is not considered. Therefore, in this report, we installed a heater in the center of the stack, changed the internal temperature, and examined the effect on energy conversion. As a result, it was suggested that heating inside stack promoted energy conversion at the low temperature end of stack.

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