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Numerical Investigation of the Ribs’ Shape, Spacing, and Height on Heat Transfer Performance of Turbulent Flow in a Flat Plate Heat Exchanger

Author

Listed:
  • Ahmed Saad Soliman

    (Mechanical Power Engineering Department, Mansoura University, El-Mansoura 35516, Egypt)

  • Li Xu

    (School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China)

  • Junguo Dong

    (School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China)

  • Ping Cheng

    (School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China)

Abstract

This paper presents a numerical study of detailed heat transfer and flow field characteristics in a flat plate heat exchanger with different types of ribs (rectangular and triangular) with different heights (H: 2.5, 5, 7.5, and 10 mm) and spacings (S: 75, 95, 128, and 195 mm). A comprehensive numerical model was established and validated with experimental data in the literature, resulting in good agreement. The effects of the height, spacing, and shape of the ribs in addition to thermal-hydraulic parameters were investigated over two values of the Reynolds number (9880–3210). The results concluded that the highest values of the thermal-hydraulic parameters are 1.62 and 1.84 for the hot and cold air sides, in the rectangular ribs, with a thickness, height, and spacing of 75 mm, and 95 mm, respectively. It is worth mentioning that the rectangular ribs have the maximum value of thermal performance at the high and low values of the Reynolds number of turbulent flows. The present design can be used in waste heat recovery systems.

Suggested Citation

  • Ahmed Saad Soliman & Li Xu & Junguo Dong & Ping Cheng, 2022. "Numerical Investigation of the Ribs’ Shape, Spacing, and Height on Heat Transfer Performance of Turbulent Flow in a Flat Plate Heat Exchanger," Sustainability, MDPI, vol. 14(22), pages 1-16, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:22:p:15143-:d:973524
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    References listed on IDEAS

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    1. Oronzio Manca & Sergio Nardini & Daniele Ricci, 2011. "Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs," Journal of Applied Mathematics, Hindawi, vol. 2011, pages 1-25, June.
    2. Seyed Soheil Mousavi Ajarostaghi & Mohammad Zaboli & Hossein Javadi & Borja Badenes & Javier F. Urchueguia, 2022. "A Review of Recent Passive Heat Transfer Enhancement Methods," Energies, MDPI, vol. 15(3), pages 1-60, January.
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