PERFORMANCE ANALYSIS OF A BETA TYPE STIRLING ENGINE WITH REGENERATIVE DISPLACER

In this study, a beta-type Stirling engine was manufactured and tested. Two displacer configurations were used and compared. As a novel approach in the first configuration, regenerator material was placed inside the displacer to increase the engine performance by minimizing heat, pressure, and dead volume losses. In the second configuration, non-regenerative displacer was used. The engine performance was determined by using of displacers of regenerative and non-regenerative. A thin copper wire mesh was used as regenerator material. The engine performance experiments were conducted at 573 +/- 5 K hot end temperature and 300 +/- 5 K cold end temperature. Tests were performed within the range of 1-5 bar charge pressure with helium as the working fluid. The maximum engine torque and maximum engine power were obtained at 5 bar charge pressure with regenerative displacer. Maximum engine torque and maximum engine power were measured as 1.92 Nm at 626 rpm and 142.53 W at 810 rpm, respectively.