HEAT ACCUMULATOR FOR THERMOACOUSTIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a heat accumulator for a thermoacoustic device that has high-efficiency of energy conversion from heat to acoustic wave.SOLUTION: In the heat accumulator 1 for a thermoacoustic device, multiple substrates 10 each comprising a resin thin film are laminated via a spacer layer 20. In the spacer layer 20, multiple spacers 21 extending vertically relative to a laminating direction Z of the substrate 10 are disposed parallel to one another at regular intervals. With the above, multiple pores 22 defined by being surrounded by laminated substrates 10 and the spacers 21 adjacent to each other are formed.