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Heat transfer and entropy generation analysis of alumina/water nanofluid in a flat plate PV/T collector under equal pumping power comparison criterion

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  • Purohit, Nilesh
  • Jakhar, Sanjeev
  • Gullo, Paride
  • Dasgupta, Mani Sankar

Abstract

Convective heat transfer of alumina/water nanofluid flow through flat plate PV/T panel in laminar flow has been investigated numerically in this study. Majority of previous studies, reported comparison in performance of nanofluid with that of basefluid, based on equal Reynolds number criterion. Hence, there is limited exploration of other comparison bases. A novel and prominent comparison basis, besides conventional equal Reynolds number, is equal pumping power and appears more practically oriented. Nanofluid, having particle dimension of 20 nm and inlet temperature of 293 K, is loaded with 1%, 4% and 6% of particle volume fraction with Reynolds number varying from 300 to 1800. Simulation results indicate average 25.2% improvement in heat transfer coefficient for nanofluid under equal Reynolds number comparison basis. While, under equal pumping power comparison criterion, the heat transfer coefficient for nanofluid is found to have average decrement up to 13.8%. Entropy generation for nanofluid reduces significantly, maximum up to 31%, under equal Reynolds number comparison criterion only. Alumina/water nanofluid in flat plate PV/T channel is found beneficial only under equal Reynolds number comparison basis.

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  • Purohit, Nilesh & Jakhar, Sanjeev & Gullo, Paride & Dasgupta, Mani Sankar, 2018. "Heat transfer and entropy generation analysis of alumina/water nanofluid in a flat plate PV/T collector under equal pumping power comparison criterion," Renewable Energy, Elsevier, vol. 120(C), pages 14-22.
    • Handle: RePEc:eee:renene:v:120:y:2018:i:c:p:14-22
    DOI: 10.1016/j.renene.2017.12.066
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    1. Bianco, Vincenzo & Scarpa, Federico & Tagliafico, Luca A., 2018. "Numerical analysis of the Al2O3-water nanofluid forced laminar convection in an asymmetric heated channel for application in flat plate PV/T collector," Renewable Energy, Elsevier, vol. 116(PA), pages 9-21.
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    4. Farshad, Seyyed Ali & Sheikholeslami, M., 2019. "Simulation of nanoparticles second law treatment inside a solar collector considering turbulent flow," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 525(C), pages 1-12.
    5. Khademi, Ramin & Razminia, Abolhassan & Shiryaev, Vladimir I., 2020. "Conjugate-mixed convection of nanofluid flow over an inclined flat plate in porous media," Applied Mathematics and Computation, Elsevier, vol. 366(C).
    6. Cui, Yuanlong & Zhu, Jie & Zoras, Stamatis & Zhang, Jizhe, 2021. "Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    7. Ebrahimi-Moghadam, Amir & Mohseni-Gharyehsafa, Behnam & Farzaneh-Gord, Mahmood, 2018. "Using artificial neural network and quadratic algorithm for minimizing entropy generation of Al2O3-EG/W nanofluid flow inside parabolic trough solar collector," Renewable Energy, Elsevier, vol. 129(PA), pages 473-485.

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