Heat Transfer Rate Enhancement in a Concentric pipe Heat Exchanger with Interrupted Fins Using Fe₃O₄-Water Nanofluid

DOI

10.2991/978-94-6463-662-8_50How to use a DOI?

Keywords

Coverless image steganography; image hashing; refine hashing

Abstract

This study investigates the effects of incorporating interrupted fins on annulus side of double-tube heat exchanger to evaluate heat transfer, Nusselt number, pressure drop and heat transfer coefficient when using Fe₃O₄/water nanofluid. Heat exchange occurs as cold fluid flows through the annulus side, with hot fluid circulates through the inner side, with Fe₃O₄ nanoparticles dispersed in water at varying concentrations. Experiments is done on nanoparticles at volume concentrations of 0.1%, 0.2%, 0.3% and mass-flow-rates of cold fluid in between 0.136 kg/s to 0.374 kg/s. This study examines impact of axial and staggered interrupted fins on convective heat transfer coefficient, heat transfer rate and Nusselt number. The results indicate that as mass flow rate and nanoparticle concentration increase, a corresponding rise in the Nusselt number, heat transfer rate and convective heat transfer coefficient is observed. At a volume fraction of 0.3%, the Nusselt number, heat transfer rate and heat transfer coefficient increase by up to 1.0013 times, 1.094 times, 25.71%, 28.32%, 73.96%, and 83.05% for axial and staggered interrupted fins, respectively, compared to plain tube at same flow rate of 0.374 kg/s. These findings indicate that staggered interrupted fin configuration outperforms both the axial interrupted fins and the plain tube in enhancing heat transfer performance. A Correlation is developed by using experimental data with regression analysis as Nu = 680.9 + 0.019283 Re - 20.2(φ) - 133.3 Pr.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - M. Lavakumar
AU  - B. Veerabhadra Reddy
AU  - K. Hemachandra Reddy
PY  - 2025
DA  - 2025/03/17
TI  - Heat Transfer Rate Enhancement in a Concentric pipe Heat Exchanger with Interrupted Fins Using Fe₃O₄-Water Nanofluid
BT  - Proceedings of the International Conference on Advanced Materials, Manufacturing and Sustainable Development (ICAMMSD 2024)
PB  - Atlantis Press
SP  - 648
EP  - 666
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-662-8_50
DO  - 10.2991/978-94-6463-662-8_50
ID  - Lavakumar2025
ER  -