Najafpour, Ahmad and Montazer, Elham and Hosseinzadeh, Khashayar and Ranjbar, A. A. and Ganji, D. D. and Kanesan, Jeevan (2024) Computational study on the impact of geometric parameters on the overall efficiency of multi-branch channel heat sink in the solar collector. International Communications in Heat and Mass Transfer, 158. p. 107884. ISSN 0735-1933, DOI https://doi.org/10.1016/j.icheatmasstransfer.2024.107884.
Full text not available from this repository.Abstract
Enhancing the thermal performance of electronic devices is a persistent challenge. Liquid-cooled Multi-branchchannel heat sinks (MBCHSs) offer a promising solution. The present study focuses on optimizing MBCHS hydrothermal efficiency and temperature uniformity. Various MBCHSs, including a foundational case and cases denoted as 1 through 4, have been developed to assess the impact of geometric parameters on performance. Using a performance evaluation criterion (PEC), it quantitatively assesses hydrothermal improvements in each model. Additionally, this study explores the use of a water-based ternary hybrid nanofluid (THNF) with GOAl2O3-ZnO ternary hybrid nanoparticles in an optimized multi-branch channel. Furthermore, an analysis and generation of entropy were examined. The COMSOL software has been employed for the simulation of the problem in this study. This promising fluid replacement for pure water demonstrates superior performance and temperature control. The findings indicate that among the various cases, case 2 exhibits the highest PEC. At Reynolds number 500, the optimal MBCHS geometry (case 2) featuring THNF with a volumetric fraction of 0.06 exhibits a 16.63% higher Heat Transfer Coefficient (HTC) compared to pure water. In contrast, MBCHS, with the same volumetric fraction, demonstrates a 29.82% lower Nusselt number. Contrastingly, at a volumetric fraction of 0.06, MBCHS displays a pressure drop 70.27% higher than that of pure water. Overall, the PEC of MBCHS with a volumetric fraction of 0.06 has decreased by 41% compared to pure water. At Reynolds number 500, laminashaped nanoparticles exhibit a 50.34% and 56.56% higher HTC in comparison to spherical and pure water, respectively. Moreover, the PEC for lamina-shaped nanoparticles at Reynolds 500 undergoes a 49.58% and 62.37% reduction when compared to spherical and pure water, respectively.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Geometrical parameter; Ternary hybrid nanofluid; Multi-branch channel heat sink; Performance evaluation criteria (PEC); Entropy generation |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 09 Apr 2025 02:46 |
| Last Modified: | 09 Apr 2025 02:46 |
| URI: | http://eprints.um.edu.my/id/eprint/46738 |
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