Resumo

GONZALEZ-BAYON, Juan José; QUINTERO-CABRERA, Diego  e  BORRAJO-PEREZ, Rubén. Analysis of irreversibilities on performance of a Stirling engine. Ingeniería Mecánica [online]. 2011, vol.14, n.2, pp. 99-106. ISSN 1815-5944.

The study aims to determine the effect of the internal and external irreversibilities caused by heat transfer and pressure losses due to friction on the Second Law performance of a Stirling engine tipe with death volume include. The Stirling engine is analyzed using a mathematical model based on the laws of thermodynamics for processes with finite speed. It is assumed an isothermic model of the motor with death volume on hot zone, cold zone and regenerator. The results of this study show that the real cycle efficiency of the Sirling engine is approximately 2 to 5 times minor than the efficiency of Carnot cycle as function of the regenerator efficiency, death volume, temperature difference between fluid and termic source and motor speed.

Palavras-chave : stirling engine; regenerative heat engine; irreversibilities analysis.

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