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Thermal evaluation of graphene nanoplatelets nanofluid in a fast-responding HP with the potential use in solar systems in smart cities

Sarafraz, Mohammad Mohsen, Tlili, Iskander, Tian, Zhe, Bakouri, Mohsen, Safaei, Mohammad Reza and Goodarzi, Marjan 2019, Thermal evaluation of graphene nanoplatelets nanofluid in a fast-responding HP with the potential use in solar systems in smart cities, Applied sciences, vol. 9, no. 10, pp. 1-11, doi: 10.3390/app9102101.

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Title Thermal evaluation of graphene nanoplatelets nanofluid in a fast-responding HP with the potential use in solar systems in smart cities
Author(s) Sarafraz, Mohammad MohsenORCID iD for Sarafraz, Mohammad Mohsen orcid.org/0000-0002-6347-0216
Tlili, Iskander
Tian, Zhe
Bakouri, Mohsen
Safaei, Mohammad Reza
Goodarzi, Marjan
Journal name Applied sciences
Volume number 9
Issue number 10
Article ID 2101
Start page 1
End page 11
Total pages 11
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2019-05
ISSN 2076-3417
Keyword(s) Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Engineering, Multidisciplinary
Materials Science, Multidisciplinary
Physics, Applied
Chemistry
Engineering
Materials Science
Physics
graphene
n-pentane
thermosyphon
Thermal performance
tilt angle
filling ratio
Summary An experimental study was undertaken to assess the heat-transfer coefficient (HTC) of graphene nanoplatelets-pentane nanofluid inside a gravity-assisted heat pipe (HP). Influence of various parameters comprising heat flux, mass fraction of the nanoparticles, installation angle and filling ratio (FR) of the working fluid on the HTC of the HP was investigated. Results showed that the HTC of the HP was strongly improved due to the presence of the graphene nanoplatelets. Also, by enhancing the heat flux, the HTC of the HP was improved. Two trade-off behaviors were identified. The first trade-off belonged to the available space in the evaporator and the heat-transfer coefficient of the system. Another trade-off was identified between the installation angle and the residence time of the working fluid inside the condenser unit. The installation angle and the FR of the HP were identified in which the HTC of the HP was the highest. The value of installation angle and filling ratio were 65° and 0.55, respectively. Likewise, the highest HTC was obtained at the largest mass fraction of the graphene nanoplatelets which was at wt. % = 0.3. The improvement in the HTC of the HP was ascribed to the Brownian motion and thermophoresis effects of the graphene nanoplatelets.
Language eng
DOI 10.3390/app9102101
Indigenous content off
HERDC Research category C1.1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30142796

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.