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CFD Analysis on the Air-Side Thermal-Hydraulic Performance of Multi-Louvered Fin Heat Exchangers at Low Reynolds Numbers

Author

Listed:
  • Arslan Saleem

    (School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea)

  • Man-Hoe Kim

    (School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea)

Abstract

The air-side thermal-hydraulic performance of multi-louvered aluminium fin heat exchangers is investigated. A systematic numerical study has been performed to analyze the air-sde thermal hydraulic characteristics over a wide range of Reynolds number i.e., from 30 to 500. Air-side heat transfer coefficient and pressure drop were calculated and validated over the mentioned band of Reynolds numbers. The critical Reynolds number was determined numerically; and also the variation of flow pattern along with the air-side heat transfer coefficient and pressure drop in a multi-louvered heat exchanger associated with R e c r i has been reported. Moreover, a parametric study of the multi-louvered aluminium fin heat exchangers was also performed for 36 heat exchanger configurations with the louver angles (19–31°); fin pitches (1.0, 1.2, 1.4 mm) and flow depths (16, 20, 24 mm); and the geometric configuration exhibiting the highest air-side heat transfer coefficient was reported. The air-side heat transfer coefficient and pressure drop results for different geometrical configurations were presented in terms of Colburn j factor and Fanning friction factor f ; as a function of Reynolds number based on louver pitch.

Suggested Citation

  • Arslan Saleem & Man-Hoe Kim, 2017. "CFD Analysis on the Air-Side Thermal-Hydraulic Performance of Multi-Louvered Fin Heat Exchangers at Low Reynolds Numbers," Energies, MDPI, vol. 10(6), pages 1-22, June.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:6:p:823-:d:101863
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    Citations

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    Cited by:

    1. Ryo Arai & Satoru Sakai & Akihiro Tatsuoka & Qin Zhang, 2021. "Analytical, Experimental, and Numerical Investigation of Energy in Hydraulic Cylinder Dynamics of Agriculture Scale Excavators," Energies, MDPI, vol. 14(19), pages 1-20, September.
    2. Shehryar Ishaque & Man-Hoe Kim, 2019. "Seasonal Performance Investigation for Residential Heat Pump System with Different Outdoor Heat Exchanger Designs," Energies, MDPI, vol. 12(24), pages 1-22, December.
    3. Azeez mohammed Hussein, Hind & Zulkifli, Rozli & Faizal Bin Wan Mahmood, Wan Mohd & Ajeel, Raheem K., 2022. "Structure parameters and designs and their impact on performance of different heat exchangers: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 154(C).
    4. Arslan Saleem & Man-Hoe Kim, 2022. "Airside Thermal Performance of Louvered Fin Flat-Tube Heat Exchangers with Different Redirection Louvers," Energies, MDPI, vol. 15(16), pages 1-21, August.
    5. Ambreen, Tehmina & Kim, Man-Hoe, 2018. "Heat transfer and pressure drop correlations of nanofluids: A state of art review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 564-583.
    6. Ali Sadeghianjahromi & Saeid Kheradmand & Hossain Nemati & Jane-Sunn Liaw & Chi-Chuan Wang, 2018. "Compound Heat Transfer Enhancement of Wavy Fin-and-Tube Heat Exchangers through Boundary Layer Restarting and Swirled Flow," Energies, MDPI, vol. 11(8), pages 1-19, July.

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