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Airside Performance of H-Type Finned Tube Banks with Surface Modifications

Author

Listed:
  • Pradhyumn Bhale

    (Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur 721302, India)

  • Mrinal Kaushik

    (Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur 721302, India)

  • Jane-Sunn Liaw

    (Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, Zhutung 310, Taiwan)

  • Chi-Chuan Wang

    (Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan)

Abstract

The present study numerically investigates some novel modifications to augment the performance of the H-type finned tube banks, which are widely used in waste heat recovery in industries. The imposed modifications upon the original H-type finned tube banks include the following: (1) Design 1 contains some triangular cuts at the edge of the original rectangular fin; (2) Design 2 modifies the original rectangular geometry into a trapezoid shape; (3) Design 3 renders the original rectangular cross-section fin thickness into trapezoid cross-section; and (4) Design 4 changes the original rectangular shape into a circular shape. Based on the simulations, it is found that Design 1 shows barely any improvements in the heat transfer performance and surface area reduction. Design 2 can provide some weight saving and surface area reduction at a slightly inferior heat transfer performance. Design 3 can offer up to 14% improvements in the overall heat transfer performance without any pumping power penalty. Yet, Design 4 provides the maximum weight saving as compared to the original reference case. With 3–9% lesser surface area than the reference case, Design 4 still offers marginally higher heat transfer performance.

Suggested Citation

  • Pradhyumn Bhale & Mrinal Kaushik & Jane-Sunn Liaw & Chi-Chuan Wang, 2019. "Airside Performance of H-Type Finned Tube Banks with Surface Modifications," Energies, MDPI, vol. 12(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:4:p:584-:d:205379
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    References listed on IDEAS

    as
    1. Zhao, X.B. & Tang, G.H. & Ma, X.W. & Jin, Y. & Tao, W.Q., 2014. "Numerical investigation of heat transfer and erosion characteristics for H-type finned oval tube with longitudinal vortex generators and dimples," Applied Energy, Elsevier, vol. 127(C), pages 93-104.
    2. Heng Chen & Yungang Wang & Qinxin Zhao & Haidong Ma & Yuxin Li & Zhongya Chen, 2014. "Experimental Investigation of Heat Transfer and Pressure Drop Characteristics of H-type Finned Tube Banks," Energies, MDPI, vol. 7(11), pages 1-11, November.
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