Enhanced Heat Transfer in Double Pipe Heat Exchanger with Circular Fins Using Copper Nanofluid and Twisted Tape Inserts: A Computational Study

Year : 2025 | Volume : 12 | Issue : 01 | Page : 11-22
    By

    Chetan Kumar Korde,

  • Pankaj Badgaiyan,

  • Tanmay Awasthi,

  1. Scholar, Department of Mechanical Engineering, Sagar Institute of Research and Technology, Bhopal, Madhya Pradesh, India
  2. Assistant Professor, Department of Mechanical Engineering, Sagar Institute of Research and Technology, Bhopal, Madhya Pradesh, India.
  3. Assistant Professor, Department of Mechanical Engineering, Sagar Institute of Research and Technology, Bhopal, Madhya Pradesh, India.

Abstract

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The enhancement of convective heat transfer in a double-pipe heat exchanger utilizing circular finned twisted tape inserts and helical screw-tapes with centre rods, in conjunction with copper oxide nanofluid as the heat transfer medium was studied in this project. Computational Fluid Dynamics (CFD) simulations were conducted across Reynolds numbers ranging from 500 to 5000 to analyse heat transfer characteristics. The investigation focuses on Nusselt number improvement and friction factor
analysis to assess thermal performance enhancement. Results demonstrate significant augmentation in convective heat transfer efficiency with both insert types compared to plain tubes, indicating their efficacy for practical heat exchanger applications. Enhancing heat transfer surfaces increases thermal efficiency, but it can also cause higher pressure drops, potentially impacting system performance. This study explores methods to achieve an optimal balance by maximizing heat transfer while minimizing pressure losses to maintain overall efficiency. The study reveals that circular finned twisted tape inserts and helical screw-tapes with centre rods substantially increase the Nusselt number across the entire Reynolds number range studied. Specifically, the circular finned twisted tape inserts achieve notable heat transfer enhancement, particularly at higher twist ratios (TR=9.8). Meanwhile, the helical screw tapes with centre rods exhibit favourable performance with increasing numbers of helices. These findings underscore the potential of these passive enhancement techniques to improve heat exchanger efficiency while managing pressure drop effectively.

Keywords: Heat exchangers, nanofluid, turbulence, twist tape, circular fins

[This article belongs to Journal of Thermal Engineering and Applications ]

How to cite this article:
Chetan Kumar Korde, Pankaj Badgaiyan, Tanmay Awasthi. Enhanced Heat Transfer in Double Pipe Heat Exchanger with Circular Fins Using Copper Nanofluid and Twisted Tape Inserts: A Computational Study. Journal of Thermal Engineering and Applications. 2025; 12(01):11-22.
How to cite this URL:
Chetan Kumar Korde, Pankaj Badgaiyan, Tanmay Awasthi. Enhanced Heat Transfer in Double Pipe Heat Exchanger with Circular Fins Using Copper Nanofluid and Twisted Tape Inserts: A Computational Study. Journal of Thermal Engineering and Applications. 2025; 12(01):11-22. Available from: https://journals.stmjournals.com/jotea/article=2025/view=0


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Regular Issue Subscription Review Article
Volume 12
Issue 01
Received 25/11/2024
Accepted 27/12/2024
Published 29/01/2025
Publication Time 65 Days
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