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Design and Optimization of Cross-Corrugated Triangular Ducts with Trapezoidal Baffles Based on Response Surface Methodology and CFD

Author

Listed:
  • Caihang Liang

    (School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China)

  • Rui Zhang

    (School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China)

  • Chaojian Mao

    (Guangxi Special Equipment Inspection and Research Institute, Nanning 541004, China)

  • Yanfang Dong

    (School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China
    College of Energy Engineering and Building Environment, Guilin University of Aerospace Technology, Guilin 541004, China)

  • Xiong Yao

    (School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China)

  • Weipeng Hu

    (Guangxi Special Equipment Inspection and Research Institute, Nanning 541004, China)

  • Zhenxing Li

    (School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China)

Abstract

Plate heat exchangers are widely used in the Heating, Ventilation, and Air Conditioning (HVAC) field. Cross-corrugated triangular ducts are commonly employed in plate heat exchangers. Inserting baffles into the cross-corrugated triangular ducts can improve the heat transfer performance of the plate heat exchangers. This study focuses on intricate interdependencies among the flow channel apex angle, the trapezoidal baffle inclination angle, baffle position, and Reynolds number ( Re ) on heat transfer and pressure drop using response surface methodology (RSM) and computational fluid dynamic (CFD). To identify the factors that maximize the Nusselt number ( Nu ) and minimize friction factor ( f ), the RSM is used to design factors, conduct numerical studies, and establish regression equations. The results show that the apex angle, baffle angle, X-direction position, and Re have significantly affected Nu and f . Compared to a non-baffled channel with the same apex angle and Re conditions, the optimized channel enhances heat transfer by 1.54 times and has an almost identical pressure drop. The inclined baffle significantly enhances comprehensive performance at low Re . The synergistic effect of the heat transfer and pressure drop is most optimal when the apex angle of the flow channel is 90°, the trapezoidal baffle inclination angle is 52.5°, and the Re is 1000, with the baffle position at 0.625H in the X-direction.

Suggested Citation

  • Caihang Liang & Rui Zhang & Chaojian Mao & Yanfang Dong & Xiong Yao & Weipeng Hu & Zhenxing Li, 2024. "Design and Optimization of Cross-Corrugated Triangular Ducts with Trapezoidal Baffles Based on Response Surface Methodology and CFD," Energies, MDPI, vol. 17(10), pages 1-23, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:10:p:2335-:d:1393180
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    References listed on IDEAS

    as
    1. Rishikesh Sharma & Dipti Prasad Mishra & Marek Wasilewski & Lakhbir Singh Brar, 2023. "Application of Response Surface Methodology and Artificial Neural Network to Optimize the Curved Trapezoidal Winglet Geometry for Enhancing the Performance of a Fin-and-Tube Heat Exchanger," Energies, MDPI, vol. 16(10), pages 1-30, May.
    2. Linlin Tian & Yilei Song & Ning Zhao & Wenzhong Shen & Tongguang Wang, 2019. "AD/RANS Simulations of Wind Turbine Wake Flow Employing the RSM Turbulence Model: Impact of Isotropic and Anisotropic Inflow Conditions," Energies, MDPI, vol. 12(21), pages 1-14, October.
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