Basic understanding and computational methods for Stirling engines

Purpose and goal

The overall aim was to create capability to design a Stirling engine with state-of-the-art characteristics. Partial goals were to characterize the current engine through testing, create a validated analysis tool, and make studies based on the current engine on the road to an engine with world class performance. The overall aim and goals have been fulfilled, and a validated analysis tool for the Stirling cycle is now available to Cleanergy , which has been used to study potential future engines.

Results and expected effects

The project outcome was essentially according to plan, and the engine has been characterized through testing, a validated analysis tool has been created, and studies towards a future engine have been made. Increased insight in the thermodynamics of the Stirling engines and knowledge about what is important in the working gas channel has resulted. The expected effect is capability to design Stirling engines with increased performance with increased market potential and profitability for end users.

Approach and implementation

The project was organized in three parts, where Chalmers handled engine testing and the creation of an analysis tool. Cleanergy supplied input data, performed system studies and provided project management and oversight. The project as organized worked well, and Chalmers has been a good partner for both Cleanergy and the project. Cooperation between company and university can be said to be key to the success of these types of projects.