Title: Exergy efficiency and simulation of novel parabolic solar collector influence of turbulence hybrid nanotube

Authors: Samaneh Baharloui; Mohammad Mohsen Peiravi; Mofid Gorji Bandpy

Addresses: Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran ' Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran ' Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran

Abstract: The novelty stems from the original combination of a new collector design, interchangeable rib geometries, and advanced hybrid nanotube-based nanofluids. Determine how changeable rib geometries (square vs. triangular) combined with turbulent flow of hybrid nanotube-based nanofluids can improve the thermal efficiency of a newly designed PTSC, using 3D CFD simulations for performance analysis and optimisation. The square collector increases surface incident radiation up to 0.36%. Furthermore, for the PTSC with square ribs and hybrid nanotube fluid demonstrated 0.22% to 0.81% better performance in total energy output, the triangular-rib collector showed 0.78% better performance under turbulent fluid flow conditions. At last, the use of triangular baffles improved collector thermal efficiency by 0.11%.

Keywords: exergy efficiency; parabolic trough solar collector; PTSC; renewable energy; turbulence hybrid nanotube.

DOI: 10.1504/IJEX.2026.152050

International Journal of Exergy, 2026 Vol.49 No.3, pp.226 - 243

Received: 28 Jun 2025
Accepted: 14 Oct 2025
Published online: 04 Mar 2026 *

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