Mohammad A. AlimZ. AbdinRahman SaidurA. HepbasliM. A. KhairulNasrudin Abd Rahim2025-10-062013037877880378-778810.1016/j.enbuild.2013.07.027https://www.scopus.com/inward/record.uri?eid=2-s2.0-84882269538&doi=10.1016%2Fj.enbuild.2013.07.027&partnerID=40&md5=7be8e0c92ccbcecccd7b17b6e0a0c294https://gcris.yasar.edu.tr/handle/123456789/10088This paper theoretically analyzes entropy generation heat transfer enhancement capabilities and pressure drop of an absorbing medium with suspended nanoparticles (Al<inf>2</inf>O<inf>3</inf> CuO SiO<inf>2</inf> TiO <inf>2</inf> dispersed in water) inside a flat plate solar collector. Steady laminar axial flow of a nanofluid is considered. These nanofluids considered have different nanoparticles volume fractions and volume flow rates in the range of 1-4% and 1-4 L/min respectively. Based on the analytical results the CuO nanofluid could reduce the entropy generation by 4.34% and enhance the heat transfer coefficient by 22.15% theoretically compared to water as an absorbing fluid. It also has a small penalty in the pumping power by 1.58%. © 2013 Elsevier B.V. All rights reserved. © 2013 Elsevier B.V. All rights reserved.EnglishEntropy Generation, Nanofluid, Pressure Drop, Pumping Power, Solar Collector, Absorbing Medium, Analytical Results, Entropy Generation, Flat-plate Solar Collectors, Heat Transfer Enhancement, Nanofluids, Pumping Power, Volume Flow Rate, Cooling Systems, Entropy, Heat Transfer Coefficients, Pressure Drop, Solar Collectors, NanofluidicsAbsorbing medium, Analytical results, Entropy generation, Flat-plate solar collectors, Heat Transfer enhancement, Nanofluids, Pumping power, Volume flow rate, Cooling systems, Entropy, Heat transfer coefficients, Pressure drop, Solar collectors, NanofluidicsArticle