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    Rights statement: This is the author’s version of a work that was accepted for publication in Solar Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Solar Energy, 204, 2020 DOI: 10.1016/j.solener.2020.04.034

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Thermal performance enhancement of a flat plate solar collector using hybrid nanofluid

Research output: Contribution to journalJournal articlepeer-review

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  • O.A. Hussein
  • K. Habib
  • A.S. Muhsan
  • R. Saidur
  • O.A. Alawi
  • T.K. Ibrahim
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<mark>Journal publication date</mark>1/07/2020
<mark>Journal</mark>Solar Energy
Volume204
Number of pages15
Pages (from-to)208-222
Publication StatusPublished
Early online date30/04/20
<mark>Original language</mark>English

Abstract

Covalent Functionalized-Multi wall carbon nanotubes (CF-MWCNTs) and Covalent Functionalized-graphene nanoplatelets (CF-GNPs) with hexagonal boron nitride (h-BN) were suspended in distilled water to prepare the hybrid nanofluids as working fluids inside the Flat Plate Solar Collector (FPSC). Different concentrations of the hybrid nanoparticles were considered and Tween-80 (Tw-80) was used as a surfactant. The stability and thermophysical properties were tested using different measurement tools. The structural and morphological properties were examined using FTIR, XRD, UV–vis spectrometry, HRTEM, FESEM, and EDX. The thermal efficiency of FPSC were tested under different volumetric flow rates (2 L/min, 3 L/min, and 4 L/min), whereas the efficiency of the collector was determined based on ASHRAE standard 93-2010. As a result, the most thermal-efficient solar collector improved up to 85% with hybrid nanofluid as the absorption medium at 4 L/min flow rate. Increment in nanoparticles’ concentrations enhanced thermal energy gain and resulted in higher fluid outlet temperature.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Solar Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Solar Energy, 204, 2020 DOI: 10.1016/j.solener.2020.04.034