A Theoretical and Experimental Study of Moderate Temperature Alfa Type Stirling Engines

Jacek Kropiwnicki and Mariusz Furmanek
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Jacek Kropiwnicki: Department of Energy and Industrial Apparatus, Gdansk University of Technology, 80–223 Gdansk, Poland
Mariusz Furmanek: Department of Energy and Industrial Apparatus, Gdansk University of Technology, 80–223 Gdansk, Poland

Energies, 2020, vol. 13, issue 7, 1-21

Abstract: The Stirling engine is a device that allows conversion of thermal energy into mechanical energy with relatively high efficiency. Existing commercial designs are mainly based on the usage of high temperature heat sources, whose availability from renewable or waste heat sources is significantly lower than that of moderate temperature sources. The paper presents the results of experimental research on a prototype alpha type Stirling engine powered by a moderate temperature source of heat. Obtained results enabled calibration of the evaluated theoretical model of the Stirling engine. The model of the engine has been subsequently used for the analysis of regenerator effectiveness influenced by the charge pressure and the heating temperature. Performed study allowed to determine further development directions of the prototype engine to improve its power and efficiency. As a result of optimization, worked out design will potentially increase the indicated efficiency up to 19.5% (5.5% prototype) and the indicated power up to 369 W (114 W prototype).

Keywords: Stirling engine; renewable energy sources; moderate temperature; adiabatic model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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