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Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis

Author

Listed:
  • Reza Afsahnoudeh

    (Chair of Fluid Process Engineering, Paderborn University, 33098 Paderborn, Germany)

  • Andreas Wortmeier

    (Chair of Fluid Process Engineering, Paderborn University, 33098 Paderborn, Germany)

  • Maik Holzmüller

    (Chair of Forming and Machining Technology, Paderborn University, 33098 Paderborn, Germany)

  • Yi Gong

    (Chair of Forming and Machining Technology, Paderborn University, 33098 Paderborn, Germany)

  • Werner Homberg

    (Chair of Forming and Machining Technology, Paderborn University, 33098 Paderborn, Germany)

  • Eugeny Y. Kenig

    (Chair of Fluid Process Engineering, Paderborn University, 33098 Paderborn, Germany)

Abstract

Pillow-plate heat exchangers (PPHEs) represent a suitable alternative to conventional shell-and-tube and plate heat exchangers. The inherent waviness of their channels promotes fluid mixing in the boundary layers and facilitates heat transfer. The overall thermo-hydraulic performance of PPHEs can further be enhanced by applying secondary surface structuring, thus increasing their competitiveness against conventional heat exchangers. In this work, various secondary structures applied on the PPHE surface were studied numerically to explore their potential to enhance near-wall mixing. Computational fluid dynamics (CFD) simulations of single-phase turbulent flow in the outer PPHE channel were performed and pressure drop, heat transfer coefficients, and overall thermo-hydraulic efficiency were determined. The simulation results clearly demonstrate a positive impact of secondary structuring on heat transfer in PPHEs.

Suggested Citation

  • Reza Afsahnoudeh & Andreas Wortmeier & Maik Holzmüller & Yi Gong & Werner Homberg & Eugeny Y. Kenig, 2023. "Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis," Energies, MDPI, vol. 16(21), pages 1-14, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:21:p:7284-:d:1268298
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    References listed on IDEAS

    as
    1. Olga Arsenyeva & Leonid Tovazhnyanskyy & Petro Kapustenko & Jiří Jaromír Klemeš & Petar Sabev Varbanov, 2023. "Review of Developments in Plate Heat Exchanger Heat Transfer Enhancement for Single-Phase Applications in Process Industries," Energies, MDPI, vol. 16(13), pages 1-28, June.
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