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

Kapil Chaudhri, J.L. Bhagoria and Vikash Kumar

Renewable Energy, 2022, vol. 184, issue C, 1150-1164

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

Keywords: Artificial roughness; SAH; Reynolds number; Transverse wedge shaped; Heat transfer; Exergy efficiency (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:184:y:2022:i:c:p:1150-1164

DOI: 10.1016/j.renene.2021.12.005

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