Enhancing Stirling Engine Efficiency Through Multi Sub-Regenerator Design: A Numerical Investigation Using MVCEF Method

The Stirling engine is a promising alternative to traditional internal combustion engines due to its high efficiency and low emissions characteristics. The performance improvement of Stirling engines deals with the design of the regenerator. In this study, we present a 2D numerical investigation based on the MVCEF numerical method. In this study, a new numerical comparison is presented. Here we compare two cases under identical thermal and dynamic boundary conditions: a classical unique regenerator and a multi sub-regenerator. Our results show that increasing the number of sub-regenerators enhances the performances of the Stirling engine. We demonstrate that a minimum of three sub-regenerators with homogenous geometrical and physical properties can provide the desired efficiency.