Study on Coaxial Thermoacoustic System Resonance Control by Locally Expanding The Outer Tube.

Abstract

The regulation of the sound field in the tube, specifically that of the resonance mode, is researched in order to improve the
cooling capacity of a coaxial-type thermoacoustic system. The coaxial type thermoacoustic system, which consists of two
tubes with different radii, has the ability to create a traveling wave sound field with a high energy conversion efficiency.
Additionally, this technology is suitable for downsizing due to its linear design. The prime mover's (PM) setting position,
however, differs from the loop-tube kind. The fundamental mode's sound pressure is improved and the range of the cooling
ability rises as the setting location is shifted closer to the tube end.