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Employing exergy-optimized pin fins in the design of an absorber in a solar air heater

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  • Nwosu, Nwachukwu P.

Abstract

Fins serve as heat transfer augmentation features in solar air heaters however they increase pressure drop in flow channels. Pin fins are relatively good heat transfer augmentation features with superior aerodynamic performance and as a result find application in some solar air heaters. The exergy optimization method is employed in sizing the pin fin. Results indicate that high efficiency of the optimized fin improves the heat absorption and dissipation potential of a solar air heater. With optimum fin efficiency and superior absorptive coating quality, useful energy losses can be minimized. Some important observations pertinent in design are made.

Suggested Citation

  • Nwosu, Nwachukwu P., 2010. "Employing exergy-optimized pin fins in the design of an absorber in a solar air heater," Energy, Elsevier, vol. 35(2), pages 571-575.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:2:p:571-575
    DOI: 10.1016/j.energy.2009.10.027
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    References listed on IDEAS

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    1. Abbassi, H., 2007. "Entropy generation analysis in a uniformly heated microchannel heat sink," Energy, Elsevier, vol. 32(10), pages 1932-1947.
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    1. Sertkaya, Ahmet Ali & Bilir, Şefik & Kargıcı, Suna, 2011. "Experimental investigation of the effects of orientation angle on heat transfer performance of pin-finned surfaces in natural convection," Energy, Elsevier, vol. 36(3), pages 1513-1517.
    2. Kaluri, Ram Satish & Basak, Tanmay, 2011. "Entropy generation due to natural convection in discretely heated porous square cavities," Energy, Elsevier, vol. 36(8), pages 5065-5080.
    3. Hedayatizadeh, Mahdi & Sarhaddi, Faramarz & Safavinejad, Ali & Ranjbar, Faramarz & Chaji, Hossein, 2016. "Exergy loss-based efficiency optimization of a double-pass/glazed v-corrugated plate solar air heater," Energy, Elsevier, vol. 94(C), pages 799-810.
    4. El-Sebaii, A.A. & Aboul-Enein, S. & Ramadan, M.R.I. & Shalaby, S.M. & Moharram, B.M., 2011. "Thermal performance investigation of double pass-finned plate solar air heater," Applied Energy, Elsevier, vol. 88(5), pages 1727-1739, May.
    5. Nidhul, Kottayat & Yadav, Ajay Kumar & Anish, S. & Kumar, Sachin, 2021. "Critical review of ribbed solar air heater and performance evaluation of various V-rib configuration," Renewable and Sustainable Energy Reviews, Elsevier, vol. 142(C).
    6. Oztop, Hakan F. & Bayrak, Fatih & Hepbasli, Arif, 2013. "Energetic and exergetic aspects of solar air heating (solar collector) systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 21(C), pages 59-83.
    7. Nwosu, Paul Nwachukwu & Nuutinen, Mika & Larmi, Martti, 2014. "Thermal modeling of a novel thermosyphonic waste heat absorption system for internal combustion engines," Energy, Elsevier, vol. 71(C), pages 21-31.

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