Impact of the shape and curvature of fins on a thermal energy storage unit

Abdeldjalil Belazreg, Naef A.A. Qasem*, Aissa Abderrahmane, Obai Younis, Yacine Khetib, Muhyaddin Rawa, Ahmed M. Hassan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Shortening the melting time of phase change materials is a fundamental research problem in thermal energy storage systems (TES). The present research numerically explores improving the thermal performance of a Paraffin wax shell and tube TES unit through various anchor-type fins. The main studied factors are the fin shape and curvature. Three different anchor-type fins are investigated: the inside curved (Configuration 1), outside curved (Configuration 2), and typically straight (Configuration 3). Galerkin finite element method (GFEM) is employed to model the storage unit and melting process. Results show that Configuration 2 reports the optimum anchor-type fin configuration by reducing the thermal charging time by 47 % and increasing the averaged Nusselt number by > 20 % compared to the other configurations. In addition, the lowest recorded Bejan number (the thermal irreversibility) and the fastest stored energy were also achieved by Configuration 2.

Original languageEnglish
Article number103638
JournalCase Studies in Thermal Engineering
StatePublished - Nov 2023

Bibliographical note

Publisher Copyright:
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  • Curved fins
  • Melting process
  • Paraffin wax
  • Thermal storage system

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Fluid Flow and Transfer Processes


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