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A review of artificial roughness geometries employed in solar air heaters

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  • Singh, Inderjeet
  • Singh, Sukhmeet

Abstract

Enhancement of heat transfer in the solar air heater ducts can be achieved by breaking laminar sub-layer near the absorbing surface and can be efficiently done by employing ribs as roughness elements. However, this gain is accomplished at the expense of increase in pressure drop. This paper presents the detailed review of various investigations made on artificial roughness geometries summarizing their outcomes. Attempt have been made to study the effect of various influencing roughness and flow parameters on the thermal and hydraulic performance of solar air heater through the flow visualization.

Suggested Citation

  • Singh, Inderjeet & Singh, Sukhmeet, 2018. "A review of artificial roughness geometries employed in solar air heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 92(C), pages 405-425.
    • Handle: RePEc:eee:rensus:v:92:y:2018:i:c:p:405-425
    DOI: 10.1016/j.rser.2018.04.108
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    Citations

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    Cited by:

    1. Singh, Inderjeet & Vardhan, Sachit, 2021. "Experimental investigation of an evacuated tube collector solar air heater with helical inserts," Renewable Energy, Elsevier, vol. 163(C), pages 1963-1972.
    2. 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.
    3. Bhuvad, Sushant Suresh & Azad, Rajnish & Lanjewar, Atul, 2022. "Thermal performance analysis of apex-up discrete arc ribs solar air heater-an experimental study," Renewable Energy, Elsevier, vol. 185(C), pages 403-415.
    4. Tarek Kh. Abdelkader & Qizhou Fan & Eid S. Gaballah & Shaowei Wang & Yanlin Zhang, 2020. "Energy and Exergy Analysis of a Flat-Plate Solar Air Heater Artificially Roughened and Coated with a Novel Solar Selective Coating," Energies, MDPI, vol. 13(4), pages 1-17, February.
    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).

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