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Heat transfer mechanism and energy efficiency of artificially roughened solar air heaters—A review

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  • Patil, Anil Kumar

Abstract

Roughness applied on a broad wall of a solar air heater significantly enhances the heat transfer to the flowing fluid with the moderate rise in fluid friction. It is imperative to select the roughness pattern and its geometrical parameters, which are responsible for the change in fluid flow behaviour steering the level of heat transfer and friction. With a view to survey the mechanism of heat transfer governed by the fluid flow pattern over the roughened wall, the distinct roughness patterns used in solar air heaters are reviewed with a fresh perspective. The interpretation of the fluid turbulence and heat transfer mechanism in case of different rib geometries has been expatiated based on available literature. Optimally usable range of Reynolds number and Temperature rise parameter for roughness geometries are proposed on the basis of effective efficiency of roughened collector.

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  • Patil, Anil Kumar, 2015. "Heat transfer mechanism and energy efficiency of artificially roughened solar air heaters—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 681-689.
    • Handle: RePEc:eee:rensus:v:42:y:2015:i:c:p:681-689
    DOI: 10.1016/j.rser.2014.10.063
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    References listed on IDEAS

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    12. Singh, Sukhmeet & Chander, Subhash & Saini, J.S., 2011. "Heat transfer and friction factor correlations of solar air heater ducts artificially roughened with discrete V-down ribs," Energy, Elsevier, vol. 36(8), pages 5053-5064.
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    15. Gawande, Vipin B. & Dhoble, A.S. & Zodpe, D.B., 2014. "Effect of roughness geometries on heat transfer enhancement in solar thermal systems – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 32(C), pages 347-378.
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    Cited by:

    1. Kumar, Rajneesh & Varun, & Kumar, Anoop, 2016. "Thermal and fluid dynamic characteristics of flow through triangular cross-sectional duct: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 61(C), pages 123-140.
    2. Jin, Dongxu & Zhang, Manman & Wang, Ping & Xu, Shasha, 2015. "Numerical investigation of heat transfer and fluid flow in a solar air heater duct with multi V-shaped ribs on the absorber plate," Energy, Elsevier, vol. 89(C), pages 178-190.
    3. Karmveer & Naveen Kumar Gupta & Tabish Alam & Raffaello Cozzolino & Gino Bella, 2022. "A Descriptive Review to Access the Most Suitable Rib’s Configuration of Roughness for the Maximum Performance of Solar Air Heater," Energies, MDPI, vol. 15(8), pages 1-46, April.
    4. 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.
    5. Harish Kumar Ghritlahre & Radha Krishna Prasad, 2018. "Development of Optimal ANN Model to Estimate the Thermal Performance of Roughened Solar Air Heater Using Two different Learning Algorithms," Annals of Data Science, Springer, vol. 5(3), pages 453-467, September.
    6. 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).
    7. Kumar, Anil & Kim, Man-Hoe, 2016. "Thermohydraulic performance of rectangular ducts with different multiple V-rib roughness shapes: A comprehensive review and comparative study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 635-652.

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