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Heat Transfer and Fluid Flow Characteristics in a Micro Heat Exchanger Employing Warm Nanofluids for Cooling of Electronic Components

Author

Listed:
  • Mahdi Mokrane

    (Centre de Développement des Énergies Renouvelables (CDER), Unité de Développement des Équipements Solaires (UDES), Tipaza 42004, Algeria)

  • Mahmoud Bourouis

    (Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans No. 26, 43007 Tarragona, Spain)

Abstract

The heat transfer enhancement and hydrodynamic characteristics of nanofluid use in a micro heat exchanger is investigated for cooling electronic components working in hot climatic conditions. The cooling fluid employed was water and TiO 2 nanoparticles at mass concentrations of 1% and 5%, the Reynolds numbers ranged from 400 to 2000, and the inlet temperatures ranged between 35 °C and 65 °C. At a nanofluid inlet temperature of 55 °C and a nanoparticle concentration of 1%, the Nusselt number increased by 23% up to 54% as the Reynolds number varied between 400 and 2000. At a nanoparticle concentration of 5%, the percentages that correspondingly enhanced the Nusselt number were 32% and 63%. The temperature of the electronic heating component decreased by 4.6–5.2 °C when the nanofluid concentration was increased from 0 to 5% at a Reynolds number of 400 and a nanofluid inlet temperature of 35 °C. Small increments in the pressure drop of about 6% and 13% were observed at nanofluid concentrations of 1% and 5%, respectively. With nanoparticle concentrations of 1% and 5%, a Reynolds number of 2000, and a nanofluid inlet temperature of 35 °C, performance evaluation criterion (PEC) values of 1.36 and 1.45 were obtained. When the nanofluid inlet temperature increased to 65 °C, the PEC parameter decreased to 1.02–1.10 for both concentrations.

Suggested Citation

  • Mahdi Mokrane & Mahmoud Bourouis, 2024. "Heat Transfer and Fluid Flow Characteristics in a Micro Heat Exchanger Employing Warm Nanofluids for Cooling of Electronic Components," Energies, MDPI, vol. 17(10), pages 1-28, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:10:p:2383-:d:1395108
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    References listed on IDEAS

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    1. Hussien, Ahmed A. & Abdullah, Mohd Z. & Al-Nimr, Moh’d A., 2016. "Single-phase heat transfer enhancement in micro/minichannels using nanofluids: Theory and applications," Applied Energy, Elsevier, vol. 164(C), pages 733-755.
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