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Investigation of the effect of design parameters on power output and thermal efficiency of a Stirling engine by thermodynamic analysis

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  • Mohammad Hossein Ahmadi
  • Mohammad Ali Ahmadi
  • Mehdi Mehrpooya

Abstract

This article demonstrates a study on finite-time thermodynamic assessment and analysis of a Stirling heat engine. Finite-time thermodynamics is performed to specify the net thermal efficiency and power output of the Stirling system with finite-rate heat transfer, regenerative heat loss, conductive thermal bridging loss and finite regeneration process time. The model investigates effects of the inlet temperature of the heat source, the volumetric ratio of the engine, effectiveness of heat exchangers and heat capacitance rates on the net power output and thermal efficiency of the engine. Output power of the Stirling engine is maximized under two optimization scenarios. In the first scenario, the higher working temperature of the Stirling engine is considered as a decision design parameter (decision variable) while in the second scenario, in addition to the higher working temperature, the temperature ratio of the engine is also considered as a design parameter. Furthermore, the thermal efficiency of the cycle corresponding to the magnitude of the maximized power of the engine is evaluated. Finally, sensitivities of results towards shift in the thermal parameters of the engine are studied.

Suggested Citation

  • Mohammad Hossein Ahmadi & Mohammad Ali Ahmadi & Mehdi Mehrpooya, 2016. "Investigation of the effect of design parameters on power output and thermal efficiency of a Stirling engine by thermodynamic analysis," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 11(2), pages 141-156.
    • Handle: RePEc:oup:ijlctc:v:11:y:2016:i:2:p:141-156.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctu030
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    References listed on IDEAS

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    1. Kongtragool, Bancha & Wongwises, Somchai, 2003. "A review of solar-powered Stirling engines and low temperature differential Stirling engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 7(2), pages 131-154, April.
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    Cited by:

    1. Xu, Haoran & Chen, Lingen & Ge, Yanlin & Feng, Huijun, 2022. "Multi-objective optimization of Stirling heat engine with various heat and mechanical losses," Energy, Elsevier, vol. 256(C).
    2. Li, Mingqiang & Ngwaka, Ugochukwu & Moeini Korbekandi, Ramin & Baker, Nick & Wu, Dawei & Tsolakis, Athanasios, 2023. "A closed-loop linear engine generator using inert gases: A performance and exergy study," Energy, Elsevier, vol. 281(C).

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