| 主权项 |
1. A heat/acoustic wave conversion component having a first end face and a second end face, comprising a partition wall that defines a plurality of cells extending from the first end face to the second end face, inside of the cells being filled with working fluid that oscillates to transmit acoustic waves, the heat/acoustic wave conversion component mutually converting heat exchanged between the partition wall and the working fluid and energy of acoustic waves resulting from oscillations of the working fluid, wherein
the heat/acoustic wave conversion component has a hydraulic diameter HD that is 0.4 mm or less, the hydraulic diameter HD being defined as HD=4×S/C, where S denotes an area of a cross section of each cell perpendicular to the cell extending direction and C denotes a perimeter of the cross section, the heat/acoustic wave conversion component has an open frontal area at each end face of 60% or more and 93% or less, the heat/acoustic wave conversion component has heat capacity per unit length in the extending direction that tends to decrease with distance from the first end face in the extending direction, and the heat/acoustic wave conversion component has a first end portion on the first end face side that accounts for a region of 10% of a total length of the heat/acoustic wave conversion component in the extending direction, and a second end portion on the second end face side that accounts for a region of 10% of the total length of the heat/acoustic wave conversion component in the extending direction, the first end portion having heat capacity that is 1.1 times or more the heat capacity of the second end portion. |
