Optimization of a Phase Adjuster in a Thermo-acoustic Stirling Engine Using Response Surface Methodology

Abstract

In this study, we carried out the optimization of the structure of phase adjuster (PA) using response surface methodology (RSM). The influences of the PA position, its inner diameter and length on the resonance frequency, pressure amplitude and the onset temperature difference had been investigated. To improve the performance of the engine, the optimal parameters group was selected and also simulated by DeltaEC. The similar results verified the accuracy of the RSM. In addition, the performance of the thermo-acoustic Stirling engine without/with PA was compared. Results showed that optimized PA decreased the onset temperature difference and increased pressure amplitude.