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Title: :  Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness
PaperId: :  27479
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 11 Issue 5 2025
DUI:    16.0415/IJARIIE-27479
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
Ragini Arjariya Sagar Institute of Research and Technology, Bhopal
Alok Agrawal Sagar Institute of Research and Technology-Excellence, Bhopal

Abstract

Mechanical
Artificial Roughness; Clean Energy; Renewable Energy; Solar Air Heater; Solar Energy
In this study, a conventional solar air heater (SAH) was redesigned by introducing transverse wire ribs with different gap configurations to enhance its thermal performance. Experiments were carried out under real outdoor conditions in Jagdalpur, India. The design parameters were kept fixed for most variables’ relative roughness height (e/D = 0.043), relative roughness pitch (p/e = 10), rib roughness diameter (e = 2 mm), and gap width (g = 4 mm) while the number of gaps (Ng) was varied from 1 to 4. The system was tested across a Reynolds number range of 2000–16000. The results show that using two gaps (Ng = 2) provides the best balance between heat transfer and friction factor when compared with other gap configurations, as well as with continuous and smooth duct designs. At these conditions, the heat transfer and friction factor were enhanced by factors of 3.04 and 3.03, respectively, over smooth ducts. The optimal configuration was identified as p/e = 10, e/D = 0.043, e = 2 mm, g = 4 mm, and Ng = 2. Overall, this configuration achieved superior heat transfer improvements compared to similar solar air heater studies, particularly because of the use of multiple gaps in the rib setup.

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IJARIIE Ragini Arjariya , and Alok Agrawal . "Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness" International Journal Of Advance Research And Innovative Ideas In Education Volume 11 Issue 5 2025 Page 237-243
MLA Ragini Arjariya , and Alok Agrawal . "Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness." International Journal Of Advance Research And Innovative Ideas In Education 11.5(2025) : 237-243.
APA Ragini Arjariya , & Alok Agrawal . (2025). Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness. International Journal Of Advance Research And Innovative Ideas In Education, 11(5), 237-243.
Chicago Ragini Arjariya , and Alok Agrawal . "Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness." International Journal Of Advance Research And Innovative Ideas In Education 11, no. 5 (2025) : 237-243.
Oxford Ragini Arjariya , and Alok Agrawal . 'Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness', International Journal Of Advance Research And Innovative Ideas In Education, vol. 11, no. 5, 2025, p. 237-243. Available from IJARIIE, https://ijariie.com/AdminUploadPdf/Heat_Transfer_Enhancement_of_Solar_Air_Heaters_Using_Artificial_Roughness_ijariie27479.pdf (Accessed : ).
Harvard Ragini Arjariya , and Alok Agrawal . (2025) 'Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness', International Journal Of Advance Research And Innovative Ideas In Education, 11(5), pp. 237-243IJARIIE [Online]. Available at: https://ijariie.com/AdminUploadPdf/Heat_Transfer_Enhancement_of_Solar_Air_Heaters_Using_Artificial_Roughness_ijariie27479.pdf (Accessed : )
IEEE Ragini Arjariya , and Alok Agrawal , "Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness," International Journal Of Advance Research And Innovative Ideas In Education, vol. 11, no. 5, pp. 237-243, Sep-Oct 2025. [Online]. Available: https://ijariie.com/AdminUploadPdf/Heat_Transfer_Enhancement_of_Solar_Air_Heaters_Using_Artificial_Roughness_ijariie27479.pdf [Accessed : ].
Turabian Ragini Arjariya , and Alok Agrawal . "Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 11 number 5 ().
Vancouver Ragini Arjariya , and Alok Agrawal . Heat Transfer Enhancement of Solar Air Heaters Using Artificial Roughness. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2025 [Cited : ]; 11(5) : 237-243. Available from: https://ijariie.com/AdminUploadPdf/Heat_Transfer_Enhancement_of_Solar_Air_Heaters_Using_Artificial_Roughness_ijariie27479.pdf
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