A detailed thermohydraulic performance assessment of surface-modified silver nanofluids in turbulent convective heat transfer DOI Creative Commons
Wasurat Bunpheng, Ratchagaraja Dhairiyasamy, Ali Saeed Almuflih

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2024, Volume and Issue: 149(17), P. 10061 - 10079

Published: Aug. 8, 2024

Abstract This study investigates the thermohydraulic performance of surface-modified silver nanofluids in turbulent convective heat transfer applications. The primary objective is to evaluate impact citrate, lipoic acid, and silica surface modifications on coefficients, pressure drops, friction factors under flow conditions. Silver nanoparticles (50 nm) with specified were synthesized dispersed deionized water, ensuring stable nanofluid preparations. Experimental evaluations conducted a smooth brass tube uniform flux, covering Reynolds numbers from 3400 21,800, mass rates 32 78 g s −1 , inlet temperatures 26 °C, 31 36 °C. Key findings indicate that silica-shelled (Ag/S) exhibited significant 35% increase coefficient compared DI while citrate-coated (Ag/C) acid-coated (Ag/L) showed slight decreases 0.2% 2%, respectively. mean Nusselt number for Ag/S also increased by 9%, demonstrating enhanced capabilities. Surface-modified experienced higher drops than base fluid. Ag/C 7.7% drop, Ag/L 12.3% increase, 12.5% correlating an 11.9% rise viscosity. While nanofluids, particularly silica-shelled, can significantly improve performance, associated increases must be carefully balanced specific Future research should explore long-term stability, varying nanoparticle concentrations, more complex geometries optimize formulations targeted

Language: Английский

A detailed thermohydraulic performance assessment of surface-modified silver nanofluids in turbulent convective heat transfer DOI Creative Commons
Wasurat Bunpheng, Ratchagaraja Dhairiyasamy, Ali Saeed Almuflih

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2024, Volume and Issue: 149(17), P. 10061 - 10079

Published: Aug. 8, 2024

Abstract This study investigates the thermohydraulic performance of surface-modified silver nanofluids in turbulent convective heat transfer applications. The primary objective is to evaluate impact citrate, lipoic acid, and silica surface modifications on coefficients, pressure drops, friction factors under flow conditions. Silver nanoparticles (50 nm) with specified were synthesized dispersed deionized water, ensuring stable nanofluid preparations. Experimental evaluations conducted a smooth brass tube uniform flux, covering Reynolds numbers from 3400 21,800, mass rates 32 78 g s −1 , inlet temperatures 26 °C, 31 36 °C. Key findings indicate that silica-shelled (Ag/S) exhibited significant 35% increase coefficient compared DI while citrate-coated (Ag/C) acid-coated (Ag/L) showed slight decreases 0.2% 2%, respectively. mean Nusselt number for Ag/S also increased by 9%, demonstrating enhanced capabilities. Surface-modified experienced higher drops than base fluid. Ag/C 7.7% drop, Ag/L 12.3% increase, 12.5% correlating an 11.9% rise viscosity. While nanofluids, particularly silica-shelled, can significantly improve performance, associated increases must be carefully balanced specific Future research should explore long-term stability, varying nanoparticle concentrations, more complex geometries optimize formulations targeted

Language: Английский

Citations

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