Performance Evaluation of a Direct Absorption Collector for Solar Thermal Energy Conversion


The solar absorption efficiency of water as a base-fluid can be significantly improved by suspending nanoparticles of various materials in it. This experimental work presents the photo thermal performance of water-based nano-fluids of graphene oxide (GO), zinc oxide (ZnO), copper oxide (CuO), and their hybrids under natural solar flux for the first time. Nanofluid samples were prepared by the two-step method and the photothermal performance of these nanofluid samples was conducted under natural solar flux in a particle concentration range from 0.0004 wt % to 0.0012 wt %. The photothermal efficiency of water-based 0.0012 wt % GO nanofluid was 46.6% greater than that of the other nanofluids used. This increased photothermal performance of GO nanofluid was associated with its good stability, high absorptivity, and high thermal conductivity. Thus, pure graphene oxide (GO) based nanofluid is a potential candidate for direct absorption solar collection to be used in different solar thermal energy conversion applications.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
Additional Information: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Uncontrolled Keywords: Direct solar absorption,Hybrid nanofluid,Photo thermal performance,Solar energy,Renewable Energy, Sustainability and the Environment,Energy Engineering and Power Technology,Energy (miscellaneous),Control and Optimization,Electrical and Electronic Engineering
Publication ISSN: 1996-1073
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Related URLs: https://www.mdp ... 1073/13/18/4956 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-09-21
Accepted Date: 2020-09-17
Authors: Sattar, Abdul
Farooq, Muhammad
Amjad, Muhammad
Saeed, Muhammad A.
Nawaz, Saad
Mujtaba, M.A.
Anwar, Saqib
El-Sherbeeny, Ahmed M.
Soudagar, Manzoore Elahi M.
Bandarra Filho, Enio P.
Ali, Qasim
Imran, Muhammad (ORCID Profile 0000-0002-3057-1301)
Pettinau, Alberto



Version: Published Version

License: Creative Commons Attribution

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