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The Thermal Charging Performance of Finned Conical Thermal Storage System Filled with Nano-Enhanced Phase Change Material

Ghalambaz, Mohammad; Shirivand, Hassan; Ayoubloo, Kasra Ayoubi; Mehryan, S. A.M.; Younis, Obai; Talebizadehsardari, Pouyan; Yaïci, Wahiba

The Thermal Charging Performance of Finned Conical Thermal Storage System Filled with Nano-Enhanced Phase Change Material Thumbnail


Authors

Mohammad Ghalambaz

Hassan Shirivand

Kasra Ayoubi Ayoubloo

S. A.M. Mehryan

Obai Younis

Wahiba Yaïci



Abstract

A latent heat thermal energy storage (LHTES) unit can store a notable amount of heat in a compact volume. However, the charging time could be tediously long due to weak heat transfer. Thus, an improvement of heat transfer and a reduction in charging time is an essential task. The present research aims to improve the thermal charging of a conical shell-tube LHTES unit by optimizing the shell-shape and fin-inclination angle in the presence of nanoadditives. The governing equations for the natural convection heat transfer and phase change heat transfer are written as partial differential equations. The finite element method is applied to solve the equations numerically. The Taguchi optimization approach is then invoked to optimize the fin-inclination angle, shell aspect ratio, and the type and volume fraction of nanoparticles. The results showed that the shell-aspect ratio and fin inclination angle are the most important design parameters influencing the charging time. The charging time could be changed by 40% by variation of design parameters. Interestingly a conical shell with a small radius at the bottom and a large radius at the top (small aspect ratio) is the best shell design. However, a too-small aspect ratio could entrap the liquid-PCM between fins and increase the charging time. An optimum volume fraction of 4% is found for nanoparticle concentration.

Citation

Ghalambaz, M., Shirivand, H., Ayoubloo, K. A., Mehryan, S. A., Younis, O., Talebizadehsardari, P., & Yaïci, W. (2021). The Thermal Charging Performance of Finned Conical Thermal Storage System Filled with Nano-Enhanced Phase Change Material. Molecules, 26(6), Article 1605. https://doi.org/10.3390/molecules26061605

Journal Article Type Article
Acceptance Date Mar 10, 2021
Online Publication Date Mar 14, 2021
Publication Date Mar 2, 2021
Deposit Date Apr 28, 2025
Publicly Available Date May 14, 2025
Journal Molecules
Electronic ISSN 1420-3049
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 26
Issue 6
Article Number 1605
DOI https://doi.org/10.3390/molecules26061605
Keywords conical shell-tube thermal energy storage unit; nano-enhanced phase change material; inclined fin; minimum thermal charging time
Public URL https://nottingham-repository.worktribe.com/output/22727000
Publisher URL https://www.mdpi.com/1420-3049/26/6/1605

Files

molecules-26-01605-v2.pdf (10.5 Mb)
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/

Copyright Statement
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).





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