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Influence of Perforated Fin on Flow Characteristics and Thermal Performance in Spiral Finned-Tube Heat Exchanger

Author

Listed:
  • Hyung Ju Lee

    (School of Mechanical Engineering, Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul 06974, Korea)

  • Jaiyoung Ryu

    (School of Mechanical Engineering, Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul 06974, Korea)

  • Seong Hyuk Lee

    (School of Mechanical Engineering, Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul 06974, Korea)

Abstract

The present study conducts the numerical investigation of flow characteristics and thermal performance of spiral finned-tube heat exchangers. The effects of location of perforations (90°, 120°, and 150°) on heat transfer and pressure drop are analyzed for the air-side. The commercial computational fluid dynamics code ANSYS Fluent (V.17.0) is used for simulations with the RNG k - ε model based on the Reynolds-averaged Navier–Stokes equations. The velocity field, Colburn j -factor, and friction factor are analyzed to evaluate the heat transfer and pressure drop characteristics. Because of the flow through the perforations, the boundary layers on the fin surfaces are interrupted. This results in increased flow disturbances close to the fin, and the heat transfer performance increases compared to the reference case. The pressure drop, which is one of the disadvantages of spiral finned tubes comparing to plate or circular fins, decreases with perforations on the fin. Overall, the cases with perforated fin exhibit greater performance of area goodness factor considering the relationship between the heat transfer and the pressure drop.

Suggested Citation

  • Hyung Ju Lee & Jaiyoung Ryu & Seong Hyuk Lee, 2019. "Influence of Perforated Fin on Flow Characteristics and Thermal Performance in Spiral Finned-Tube Heat Exchanger," Energies, MDPI, vol. 12(3), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:3:p:556-:d:204978
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    References listed on IDEAS

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    1. 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.
    2. Karl Lindqvist & Zachary T. Wilson & Erling Næss & Nikolaos V. Sahinidis, 2018. "A Machine Learning Approach to Correlation Development Applied to Fin-Tube Bundle Heat Exchangers," Energies, MDPI, vol. 11(12), pages 1-16, December.
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    Cited by:

    1. Miyer Valdes & Juan G. Ardila & Dario Colorado & Beatris A. Escobedo-Trujillo, 2019. "Computational Model to Evaluate the Effect of Passive Techniques in Tube-In-Tube Helical Heat Exchanger," Energies, MDPI, vol. 12(10), pages 1-12, May.
    2. Hyung Ju Lee & Seong Hyuk Lee, 2020. "Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles," Energies, MDPI, vol. 13(6), pages 1-13, March.
    3. Natalia Rydalina & Elena Antonova & Irina Akhmetova & Svetlana Ilyashenko & Olga Afanaseva & Vincenzo Bianco & Alexander Fedyukhin, 2020. "Analysis of the Efficiency of Using Heat Exchangers with Porous Inserts in Heat and Gas Supply Systems," Energies, MDPI, vol. 13(22), pages 1-13, November.
    4. Serhii Khovanskyi & Ivan Pavlenko & Jan Pitel & Jana Mizakova & Marek Ochowiak & Irina Grechka, 2019. "Solving the Coupled Aerodynamic and Thermal Problem for Modeling the Air Distribution Devices with Perforated Plates," Energies, MDPI, vol. 12(18), pages 1-16, September.
    5. Daniarta, Sindu & Nemś, Magdalena & Kolasiński, Piotr, 2023. "A review on thermal energy storage applicable for low- and medium-temperature organic Rankine cycle," Energy, Elsevier, vol. 278(PA).

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