Acoustic Stirling engine: Novel development of Stirling engine

本研究的目的是在斯特林发动机技术上实现一种新的发展，即用气柱或液柱的振动代替固体活塞的振动。基于气柱不稳定振荡而发明的无活塞斯特林发动机环管式热声发动机，本研究采用由不同直径圆柱管组成的共轴管对环管式热声发动机进行改进。同时，利用U型管内液柱的振荡，研制了一种无活塞斯特林发动机。与使用气柱振荡的发动机相比，这种发动机的工作频率明显较低。

Objective of this study was to achieve a novel development on a Stirling engine technology by replacing oscillating solid pistons with oscillations of a gas column or with oscillations of a liquid column. The looped tube type thermoacoustic engine, which had been invented as a pistonless Stirling engine based on unstable oscillations of the gas column, was modified in this study by using a co-axial tube consisting of cylindrical tubes with different diameters. Also, in this study, a pistonless-Stirling engine was developed by using oscillation of a liquid column in a U tube. This type of the engine operates at significantly low frequency compared with that using oscillation of a gas column.