Design and construction of a stirling engine

Abstract

Prof. R.A. Attalage and Dr.W.M.S.R.Weerasinghe of University of Moratuwa organized our group under the module ME420, with the goal of designing and modeling a Stirling engine that could be used to generate power for small scale applications. In order to develop a compact and low cost Stirling engine, a gamma type Stirling engine with simple regenerator and a rhombic mechanism was developed. Its target shaft power is 50 W at engine speed of 2000 rpm and mean pressure of 0.8 MPa using air as working gas. This report describes the outline of the engine design and the performance test. The test was done without load, using air in atmospheric condition. The results indicate that a higher performance heat exchanger and decreasing of mechanical loss are needed for the attainment of the target performance