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Entropy generation analysis for fully developed laminar convection in hexagonal duct subjected to constant heat flux

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  • Jarungthammachote, Sompop

Abstract

The entropy generation of a fully developed laminar flow in a hexagonal duct is investigated in this study. A constant heat flux condition was applied in this analysis. Two fluids, water and engine oil, were used to study the effect of fluid properties on the entropy generation. The fluid properties were evaluated using average temperature between inlet and outlet duct sections. The aspect ratio of the hexagonal duct was varied to show its effect on the entropy generation. Attention was also given to the supplied heat flux affecting the entropy generation. Finally, the entropy generation calculated from the hexagonal duct was compared with that from rectangular and circular ducts having the same hydraulic diameter and cross-sectional area.

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  • Jarungthammachote, Sompop, 2010. "Entropy generation analysis for fully developed laminar convection in hexagonal duct subjected to constant heat flux," Energy, Elsevier, vol. 35(12), pages 5374-5379.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:5374-5379
    DOI: 10.1016/j.energy.2010.07.020
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    References listed on IDEAS

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    1. Satapathy, Ashok K., 2009. "Thermodynamic optimization of a coiled tube heat exchanger under constant wall heat flux condition," Energy, Elsevier, vol. 34(9), pages 1122-1126.
    2. Ko, T.H. & Ting, K., 2006. "Optimal Reynolds number for the fully developed laminar forced convection in a helical coiled tube," Energy, Elsevier, vol. 31(12), pages 2142-2152.
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    Cited by:

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    2. Torabi, Mohsen & Zhang, Kaili & Yang, Guangcheng & Wang, Jun & Wu, Peng, 2014. "Temperature distribution, local and total entropy generation analyses in asymmetric cooling composite geometries with multiple nonlinearities: Effect of imperfect thermal contact," Energy, Elsevier, vol. 78(C), pages 218-234.
    3. Amani, E. & Nobari, M.R.H., 2011. "A numerical investigation of entropy generation in the entrance region of curved pipes at constant wall temperature," Energy, Elsevier, vol. 36(8), pages 4909-4918.
    4. Arjmandi, H.R. & Amani, E., 2015. "A numerical investigation of the entropy generation in and thermodynamic optimization of a combustion chamber," Energy, Elsevier, vol. 81(C), pages 706-718.
    5. Hajmohammadi, M.R. & Eskandari, H. & Saffar-Avval, M. & Campo, A., 2013. "A new configuration of bend tubes for compound optimization of heat and fluid flow," Energy, Elsevier, vol. 62(C), pages 418-424.
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