Solar thermal radiation and Cattaneo-Christov heat transport in magnetohydrodynamic photovoltaic-thermal cooling systems under rotating flow
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Date
2025-11-11
Journal Title
Journal ISSN
Volume Title
Publisher
World Scienti¯c Publishing Company
Abstract
The integration of photovoltaic-thermal (PVT) systems with advanced cooling techniques is
crucial for improving energy e±ciency and overcoming performance limitations in solar energy
conversion. This study investigates the combined e®ects of solar thermal radiation, Cattaneo{
Christov non-Fourier heat transport and magnetohydrodynamic (MHD) rotating °ow on PVT
cooling performance. The purpose is to provide a deeper understanding of how thermal and
electromagnetic interactions in°uence heat transfer and system e±ciency, particularly under
conditions where conventional Fourier-based models fall short. A carboxymethylcellulose
(CMC){water-based base °uid enhanced with nanoparticles zirconium oxide (ZrO2), copper (Cu)
and aluminum oxide (Al2O3) is employed as the working medium to further boost thermal conductivity and system e±ciency. A mathematical model is developed to capture the dynamics of
radiative heat °ux, magnetic ¯eld, rotation and nonlinear thermal relaxation e®ects. The governing equations are transformed into dimensionless form and solved numerically using a Chebyshev collocation method. The results demonstrate that the inclusion of ZrO2, Cu and Al2O3
nanoparticles in the CMC{water base °uid signi¯cantly improves thermal conductivity, thereby
enhancing the system's cooling capacity. Under solar thermal radiation, ternary hybrid nano°uids
demonstrate approximately 20% superior thermal regulation. The novelty of this work lies in the
synergistic analysis of MHD rotating °ow, Cattaneo{Christov heat transport and nanoparticleengineered CMC-based °uids for PVT cooling, providing new physical insights and practical
guidelines for the design of high-performance renewable energy systems.