DIFFERENTIAL POLYTROPIC MODEL FOR SIMULATION OF STIRLING ENGINES CONSIDERING VARIOUS REGENERATORS MODELS

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BABAELAHI MOJTABA; SAYYAADI HOSEYN

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:2 Page(s): 187-197

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Title

DIFFERENTIAL POLYTROPIC MODEL FOR SIMULATION OF STIRLING ENGINES CONSIDERING VARIOUS REGENERATORS MODELS

Author(s)

BABAELAHI MOJTABA | SAYYAADI HOSEYN | Issue Writer Certificate

Keywords

STIRLING ENGINESQ2

POLYTROPIC MODELQ2

DIFFERENTIAL THERMAL MODELQ2

FINITE SPEED THERMODYNAMICSQ2

REGENERATORQ2

Abstract

A DIFFERENTIAL THERMAL MODEL for simulation of STIRLING ENGINES was presented. In the new model polytropic expansion/compression processes were substituted for traditional isothermal or adiabatic models of previous studies. In addition, the developed POLYTROPIC MODEL was corrected for various loss mechanisms of real engines. In this regard, the effect of non-ideal operation as well as heat recovery in the REGENERATOR was considered. In addition, non-ideal heat transfer of heater and cooler were implemented into the model. In pressure analysis and evaluation of work produced or consumed in cylinders, the effect of finite speed motion of piston was considered based on the concept of FINITE SPEED THERMODYNAMICS. Moreover, the effects of heat leakage in REGENERATOR, leakage effect and shuttle effect were evaluated. Finally, new differential POLYTROPIC MODELs were employed on a benchmark Stirling engine, so-called GPU-3, and accuracy of models was validated through comparison with experimental results as well as previous models. As thermal performance of STIRLING ENGINES is significantly affected by thermohydraulic performance of REGENERATORand there are various thermohydraulic models for REGENERATOR, three famous thermohydraulic models of REGENERATOR were integrated into models and through comparison with experimental performance of GPU-3 engine, a more accurate thermohydraulic model was introduced.

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APA: Copy

BABAELAHI, MOJTABA, & SAYYAADI, HOSEYN. (2015). DIFFERENTIAL POLYTROPIC MODEL FOR SIMULATION OF STIRLING ENGINES CONSIDERING VARIOUS REGENERATORS MODELS. MODARES MECHANICAL ENGINEERING, 15(2), 187-197. SID. https://sid.ir/paper/179730/en

Vancouver: Copy

BABAELAHI MOJTABA, SAYYAADI HOSEYN. DIFFERENTIAL POLYTROPIC MODEL FOR SIMULATION OF STIRLING ENGINES CONSIDERING VARIOUS REGENERATORS MODELS. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(2):187-197. Available from: https://sid.ir/paper/179730/en

IEEE: Copy

MOJTABA BABAELAHI, and HOSEYN SAYYAADI, “DIFFERENTIAL POLYTROPIC MODEL FOR SIMULATION OF STIRLING ENGINES CONSIDERING VARIOUS REGENERATORS MODELS,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 2, pp. 187–197, 2015, [Online]. Available: https://sid.ir/paper/179730/en

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