Enhancement of Heat Transfer Characteristics of Plain Fin Coated With Graphene Nanoparticle

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Authors

  • Sushma S.
     Channabasaveshwara Institute of Technology ,IN
  • T. K. Chandrashekar
     Department of Mechanical Engineering, RNS Institute of Technology, Bangalore – 560098, Karnataka ,IN
  • N. R. Banapurmath
     School of Mechanical Engineering, KLE Technological University, BVB Campus, Hubballi – 580031, Karnataka ,IN
  • S. B. Nagesh
     Department of Mechanical Engineering, Channabasaveshwara Institute of Technology, Gubbi - 572216, Karnataka ,IN
  • R. Venkatesh
     Centre of Excellence in Material Science, KLE Technological University, BVB Campus, Hubballi - 580031, Karnataka ,IN

DOI:

https://doi.org/10.18311/jmmf/2022/31313

Keywords:

Fins, Fin Configuration, Graphene, Heat Sink, Heat Transfer Characteristics, Thin Film Coating

Abstract

Improving the cooling performance of electronic devices and engines, unlike is an important area that is being investigated by several investigators. Poor performance of conventional cooling methods has necessitated enhancing heat transfer by using different fins with different configurations. Further various thin film coatings on fins using different nano-particles of silver, copper and carbon-based materials like Graphene, Multi Walled Carbon Nanotubes (MWCNTs) and their benefits in enhancing heat transfer have been reported in the literature. This work involves highlights on heat transfer characteristics of heat sinks having different shapes such as copper concave, aluminium congruent and copper flat plate. These differently shaped heat sinks were subsequently coated with graphene nanoparticles and their effect on heat transfer characteristics is studied. The outcomes obtained from the experimental forced convection are used to compare the heat transfer characteristics for different heat sinks with and without nano-coating. The experiment is conducted for varied voltage inputs and the heat dissipation is compared. Different parameters like surface temperature, Nusselt number, Reynolds number, and effectiveness are compared for different heat sinks with and without nano-coating. Experimental analysis showed that for a constant voltage input of 100V, copper concave, aluminium congruent and copper flat plate-shaped heat sinks with graphene coating showed higher heat transfer coefficients which more by 45.35%, 40.64%, and 21.43% when compared to those without the coating. Also, the Nusselt number increased by 9.9%, 13.9% and 40% accompanying a decrease in thermal resistance by 40%, 30.9% and 30.36% with respect to those without the coating. The copper concave-shaped heat sink, with graphene nano-coating exhibited a higher heat transfer coefficient, higher Nusselt number and decreased thermal resistance compared to that without coating and hence can be used in electronic elements for greater heat dissipation.

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Published

2023-04-04

How to Cite

Sushma S., T. K. Chandrashekar, N. R. Banapurmath, S. B. Nagesh, & R. Venkatesh. (2023). Enhancement of Heat Transfer Characteristics of Plain Fin Coated With Graphene Nanoparticle. Journal of Mines, Metals and Fuels, 70(12), 656–664. https://doi.org/10.18311/jmmf/2022/31313

Issue

Volume 70, Issue 12, December 2022

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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