Thermodynamic analysis of an α-type Stirling engine with variable phase angle

Abstract

Abstract

In this study, a variable phase angle, α-type Stirling engine was described and analysed from kinematic and thermodynamics point of view. Kinematic relations were described for the calculation of hot and cold cylinder volumes. The instantaneous temperature distribution of the working fluid, through the heating—cooling passages and regenerator, was calculated by preparing a nodal analysis in FORTRAN. Effect of phase angle variation on work generation was examined. By using three different convective heat transfer coefficient, which were 200, 300, and 400 W/m² K, variation of work generation with working fluid mass was examined. For the same values of convective heat transfer coefficient, variation of engine power versus the engine speed was examined.