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Double-Layer Metal Foams for Further Heat Transfer Enhancement in a Channel: An Analytical Study

Author

Listed:
  • Sinem Donmus

    (Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu-shi 432-8561, Japan
    Toshiba Carrier Corporation, 336 Tadehara, Fuji 416-0931, Japan)

  • Moghtada Mobedi

    (Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu-shi 432-8561, Japan
    Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu-shi 432-8561, Japan)

  • Fujio Kuwahara

    (Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu-shi 432-8561, Japan
    Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu-shi 432-8561, Japan)

Abstract

A local thermal non-equilibrium analysis of heat and fluid flow in a channel fully filled with aluminum foam is performed for three cases: (a) pore density of 5 PPI (pore per inch), (b) pore density of 40 PPI, and (c) two different layers of 5 and 40 PPI. The dimensionless forms of fully developed heat and fluid flow equations for the fluid phase and heat conduction equation for the solid phase are solved analytically. The effects of interfacial heat transfer coefficient and thermal dispersion conductivity are considered. Analytical expressions for temperature profile of solid and fluid phases, and also the channel Nusselt number ( N u H ) are obtained. The obtained results are discussed in terms of the channel-based Reynolds number ( R e H ) changing from 10 to 2000, and thickness ratio between the channel height and sublayers. The Nusselt number of the channel with 40 PPI is always greater than that of the 5 PPI channel. It is also greater than the channel with two-layer aluminum foams until a specific Reynolds number then the Nusselt number of the channel with two-layer aluminum foams becomes greater than the uniform channels due to the higher velocity in the outer region and considerable increase in thermal dispersion.

Suggested Citation

  • Sinem Donmus & Moghtada Mobedi & Fujio Kuwahara, 2021. "Double-Layer Metal Foams for Further Heat Transfer Enhancement in a Channel: An Analytical Study," Energies, MDPI, vol. 14(3), pages 1-22, January.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:3:p:672-:d:488885
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    References listed on IDEAS

    as
    1. Ali J. Chamkha & Sina Sazegar & Esmael Jamesahar & Mohammad Ghalambaz, 2019. "Thermal Non-Equilibrium Heat Transfer Modeling of Hybrid Nanofluids in a Structure Composed of the Layers of Solid and Porous Media and Free Nanofluids," Energies, MDPI, vol. 12(3), pages 1-27, February.
    2. Kamel Hooman & Xiaoxue Huang & Fangming Jiang, 2017. "Solar-Enhanced Air-Cooled Heat Exchangers for Geothermal Power Plants," Energies, MDPI, vol. 10(10), pages 1-10, October.
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    Cited by:

    1. Trilok G & Kurma Eshwar Sai Srinivas & Devika Harikrishnan & Gnanasekaran N & Moghtada Mobedi, 2022. "Correlations and Numerical Modeling of Stacked Woven Wire-Mesh Porous Media for Heat Exchange Applications," Energies, MDPI, vol. 15(7), pages 1-25, March.
    2. Jadhav, Prakash H. & Gnanasekaran, N. & Mobedi, Moghtada, 2023. "Analysis of functionally graded metal foams for the accomplishment of heat transfer enhancement under partially filled condition in a heat exchanger," Energy, Elsevier, vol. 263(PA).
    3. Trilok G & N Gnanasekaran & Moghtada Mobedi, 2021. "Various Trade-Off Scenarios in Thermo-Hydrodynamic Performance of Metal Foams Due to Variations in Their Thickness and Structural Conditions," Energies, MDPI, vol. 14(24), pages 1-23, December.

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