Study on energy conversion in travelling wave type thermoacoustic system investigation on temperature distribution in the stack

In the present paper, the influence of the temperature distribution in the stack on the work flow generation is experimentally investigated. To actively change the temperature distribution in the stack, the central heating method to settle the heat source on the center as well as one end of the stack is employed. As a result, in the case that the central heating method is used, the work flow generation increases by 1.6 times comparing with the method to heat only one end. The work flow generation is deemed to increase because the temperature gradient is formed on the side of the cold end which is the region with a large effective thermal expansion coefficient. From the above discussion, the central heating method is suggested to be valid for increasing the energy generation.