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The Influence of Surface Radiation on the Passive Cooling of a Heat-Generating Element

Author

Listed:
  • Igor V. Miroshnichenko

    (Regional Scientific and Educational Mathematical Centre, Tomsk State University, 634050 Tomsk, Russia)

  • Mikhail A. Sheremet

    (Laboratory on Convective Heat and Mass Transfer, Tomsk State University, 634050 Tomsk, Russia)

  • Abdulmajeed A. Mohamad

    (Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, CEERE, The University of Calgary, Calgary, AB T2N 1N4, Canada)

Abstract

Low-power electronic devices are suitably cooled by thermogravitational convection and radiation. The use of modern methods of computational mechanics makes it possible to develop efficient passive cooling systems. The present work deals with the numerical study of radiative-convective heat transfer in enclosure with a heat-generating source such as an electronic chip. The governing unsteady Reynolds-averaged Navier–Stokes (URANS) equations were solved using the finite difference method. Numerical results for the stream function–vorticity formulation are shown in the form of isotherm and streamline plots and average Nusselt numbers. The influence of the relevant parameters such as the Ostrogradsky number, surface emissivity, and the Rayleigh number on fluid flow characteristics and thermal transmission are investigated in detail. The comparative assessment clearly emphasizes the effect of surface radiation on the overall energy balance and leads to change the mean temperature inside the heat generating element. The results of the present study can be applied to the design of passive cooling systems.

Suggested Citation

  • Igor V. Miroshnichenko & Mikhail A. Sheremet & Abdulmajeed A. Mohamad, 2019. "The Influence of Surface Radiation on the Passive Cooling of a Heat-Generating Element," Energies, MDPI, vol. 12(6), pages 1-14, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:6:p:980-:d:213613
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    References listed on IDEAS

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    1. Biswal, Pratibha & Basak, Tanmay, 2017. "Entropy generation vs energy efficiency for natural convection based energy flow in enclosures and various applications: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 1412-1457.
    2. Mikhail A. Sheremet & Hakan F. Oztop & Dmitriy V. Gvozdyakov & Mohamed E. Ali, 2018. "Impacts of Heat-Conducting Solid Wall and Heat-Generating Element on Free Convection of Al 2 O 3 /H 2 O Nanofluid in a Cavity with Open Border," Energies, MDPI, vol. 11(12), pages 1-17, December.
    3. Byeong Dong Kang & Hyun Jung Kim & Dong-Kwon Kim, 2017. "Nusselt Number Correlation for Vertical Tubes with Inverted Triangular Fins under Natural Convection," Energies, MDPI, vol. 10(8), pages 1-13, August.
    4. Guizhi Xu & Xiao Hu & Zhirong Liao & Chao Xu & Cenyu Yang & Zhanfeng Deng, 2018. "Experimental and Numerical Study of an Electrical Thermal Storage Device for Space Heating," Energies, MDPI, vol. 11(9), pages 1-14, August.
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    Cited by:

    1. Abderrahmane Baïri & Nacim Alilat & Alexander Martín-Garín & Kemi Adeyeye & José-Antonio Millán-García & Luis Roseiro, 2021. "Free Convective Heat Transfer in a Closed Gap between Concentric Semi-Hemispheres," Energies, MDPI, vol. 14(22), pages 1-10, November.
    2. Mikhail A. Sheremet, 2021. "Numerical Simulation of Convective-Radiative Heat Transfer," Energies, MDPI, vol. 14(17), pages 1-3, August.
    3. Cairui Yu & Dongmei Shen & Qingyang Jiang & Wei He & Hancheng Yu & Zhongting Hu & Hongbing Chen & Pengkun Yu & Sheng Zhang, 2019. "Numerical and Experimental Study on the Heat Dissipation Performance of a Novel System," Energies, MDPI, vol. 13(1), pages 1-26, December.

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