THERMAL SCIENCE

International Scientific Journal

Sureshkumar Petchimuthu

,

Sathiya Moorthy Rajendran

ANALYTICAL STUDY OF EXERGETIC EFFICIENCY OF A SOLAR AIR HEATER WITH C-SHAPE ROUGHNESS ELEMENT

ABSTRACT
This study analytically evaluates the exergetic efficiency of solar air heaters incorporating C-shaped rib roughened absorber plates. Compared to flat plate designs, the proposed geometry significantly enhances energy performance. Optimal roughness parameters for maximizing exergy efficiency are identified, providing design guidelines for improved solar air heater systems. The maximum value of exergy efficiency of the solar air heater, with C-shaped ribs was obtained as 5.9%.
KEYWORDS
C-Shaped ribs, exergy, Relative roughness pitch, solar air heater, Relative roughness height, Analytical Study
PAPER SUBMITTED: 2024-04-15
PAPER REVISED: 2024-05-06
PAPER ACCEPTED: 2024-08-30
PUBLISHED ONLINE: 2024-10-12
DOI REFERENCE: https://doi.org/10.2298/TSCI240415212P
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 2, PAGES [943 - 954]
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Analytical study of exergetic efficiency of a solar air heater with C-shape roughness element

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence