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Transverse wedge-shaped rib roughened solar air heater (SAH) - Exergy based experimental investigation

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  • Chaudhri, Kapil
  • Bhagoria, J.L.
  • Kumar, Vikash

Abstract

The major challenge faced in heat transfer augmentation in roughened solar air duct is the formation of viscous sublayer near heat transferring surface. The present investigation uses main air supply flow under roughened duct mounted with transverse wedge shaped roughened absorbers for the heated air jet delivery. This technique is prolific as it provides the ambient cool air to the entire absorber plate surface as well as the roughness element on the heated absorber plate that considerably enhances the heat transfer coefficient. Data of everyday was documented under diverse range of parameters viz., Re 3000–18000, rib wedge angle (φ) of 8°, 10°, 12° and 15°, relative roughness pitch (p/e) of 60.17φ−1.0264

Suggested Citation

  • Chaudhri, Kapil & Bhagoria, J.L. & Kumar, Vikash, 2022. "Transverse wedge-shaped rib roughened solar air heater (SAH) - Exergy based experimental investigation," Renewable Energy, Elsevier, vol. 184(C), pages 1150-1164.
    • Handle: RePEc:eee:renene:v:184:y:2022:i:c:p:1150-1164
    DOI: 10.1016/j.renene.2021.12.005
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    References listed on IDEAS

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    2. Zhang, Pu & Xia, Peng & Guo, Xueyan & Xie, Shaozhang & Ma, Wensheng, 2022. "A CFD-adjoint reverse design of transverse rib profile for enhancing thermo-hydraulic performance in the solar air heater," Renewable Energy, Elsevier, vol. 198(C), pages 587-601.
    3. Kumar, Raj & Kumar, Sushil & Nadda, Rahul & Kumar, Khusmeet & Goel, Varun, 2022. "Thermo-hydraulic efficiency and correlation development of an indoor designed jet impingement solar thermal collector roughened with discrete multi-arc ribs," Renewable Energy, Elsevier, vol. 189(C), pages 1259-1277.

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