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Exergy based performance evaluation of solar air heater with arc-shaped wire roughened absorber plate

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  • Sahu, Mukesh Kumar
  • Prasad, Radha Krishna

Abstract

Exergy efficiency analysis is an useful method to evaluate overall performance of solar thermal systems as it takes into consideration of useful energy output and consequent pumping power requirement. In present work, an investigation on exergetic performance evaluation of solar air heater with arc-shaped wire rib roughened absorber plates has been made analytically by employing mathematical model and the results have been compared with a plane absorber plate solar air heater for similar operating conditions. The exergetic efficiency curves as a function of Reynolds number (Re) and temperature rise parameter (ΔT/I) for different roughness parameters have been plotted. The maximum enhancement in exergetic efficiency of roughened solar air heater as compared to smooth absorber plate solar air heater has been found as 56% corresponding to relative roughness height (e/D) = 0.0422. The design plots, exhibiting the optimum combination of roughness parameters, can be used to design arc shaped wire rib roughened solar air heater.

Suggested Citation

  • Sahu, Mukesh Kumar & Prasad, Radha Krishna, 2016. "Exergy based performance evaluation of solar air heater with arc-shaped wire roughened absorber plate," Renewable Energy, Elsevier, vol. 96(PA), pages 233-243.
    • Handle: RePEc:eee:renene:v:96:y:2016:i:pa:p:233-243
    DOI: 10.1016/j.renene.2016.04.083
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    References listed on IDEAS

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    8. Alam, Tabish & Kim, Man-Hoe, 2018. "A comprehensive review on single phase heat transfer enhancement techniques in heat exchanger applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 813-839.
    9. Ali Hassan & Ali M. Nikbakht & Sabrina Fawzia & Prasad Yarlagadda & Azharul Karim, 2024. "A Comprehensive Review of the Thermohydraulic Improvement Potentials in Solar Air Heaters through an Energy and Exergy Analysis," Energies, MDPI, vol. 17(7), pages 1-47, March.
    10. Alam, Tabish & Kim, Man-Hoe, 2017. "A critical review on artificial roughness provided in rectangular solar air heater duct," Renewable and Sustainable Energy Reviews, Elsevier, vol. 69(C), pages 387-400.
    11. Kumar, Rajneesh & Goel, Varun, 2021. "Unconventional solar air heater with triangular flow-passage: A CFD based comparative performance assessment of different cross-sectional rib-roughnesses," Renewable Energy, Elsevier, vol. 172(C), pages 1267-1278.
    12. Jouybari, Nima Fallah & Lundström, T. Staffan, 2020. "Performance improvement of a solar air heater by covering the absorber plate with a thin porous material," Energy, Elsevier, vol. 190(C).
    13. Singh Bisht, Vijay & Kumar Patil, Anil & Gupta, Anirudh, 2018. "Review and performance evaluation of roughened solar air heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 954-977.
    14. 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).
    15. Debnath, Suman & Das, Biplab & Randive, P.R. & Pandey, K.M., 2018. "Performance analysis of solar air collector in the climatic condition of North Eastern India," Energy, Elsevier, vol. 165(PB), pages 281-298.
    16. Norouzi, Amir Mohammad & Siavashi, Majid & Ahmadi, Rouhollah & Tahmasbi, Milad, 2021. "Experimental study of a parabolic trough solar collector with rotating absorber tube," Renewable Energy, Elsevier, vol. 168(C), pages 734-749.
    17. Mgbemene, Chigbo & Jacobs, Ifeanyi & Okoani, Anthony & Ononiwu, Ndudim, 2022. "Experimental investigation on the performance of aluminium soda can solar air heater," Renewable Energy, Elsevier, vol. 195(C), pages 182-193.
    18. Sahu, Mukesh Kumar & Prasad, Radha Krishna, 2017. "Thermohydraulic performance analysis of an arc shape wire roughened solar air heater," Renewable Energy, Elsevier, vol. 108(C), pages 598-614.

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