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Title: | Simulation of a fast-charging porous thermal energy storage system saturated with a nano-enhanced phase change material |
Authors: | Ghalambaz, M Mehryan, SAM Shirivand, H Shalbafi, F Younis, O Inthavong, K Ahmadi, G Talebizadehsardari, P |
Keywords: | nonuniform metal foam;melting heat transfer;thermal energy storage |
Issue Date: | 12-Mar-2021 |
Publisher: | MDPI AG |
Citation: | Ghalambaz, M. et al. (2021) 'Simulation of a fast-charging porous thermal energy storage system saturated with a nano-enhanced phase change material', Energies, 14 (6), 1575, pp. 1 - 18. doi: 10.3390/en14061575. |
Abstract: | Copyright: © 2021 by the authors. The melting of a coconut oil–CuO phase change material (PCM) embedded in an engineered nonuniform copper foam was theoretically analyzed to reduce the charging time of a thermal energy storage unit. A nonuniform metal foam could improve the effective thermal conductivity of a porous medium at regions with dominant conduction heat transfer by increasing local porosity. Moreover, the increase in porosity contributes to flow circulation in the natural convection-dominant regimes and adds a positive impact to the heat transfer rate, but it reduces the conduction heat transfer and overall heat transfer. The Taguchi optimization method was used to minimize the charging time of a shell-and-tube thermal energy storage (TES) unit by optimizing the porosity gradient, volume fractions of nanoparticles, average porosity, and porous pore sizes. The results showed that porosity is the most significant factor and lower porosity has a faster charging rate. A nonuniform porosity reduces the charging time of TES. The size of porous pores induces a negligible impact on the charging time. Lastly, the increase in volume fractions of nanoparticles reduces the charging time, but it has a minimal impact on the TES unit’s charging power. |
Description: | Data Availability Statement: Data is contained within the article. |
URI: | https://bura.brunel.ac.uk/handle/2438/25165 |
DOI: | https://doi.org/10.3390/en14061575 |
Other Identifiers: | 1575 |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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FullText.pdf | Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This is an open access article distributed under the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | 6.32 MB | Adobe PDF | View/Open |
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