Aluminum Oxide (Al2O3) Nanoparticles as Thermal Enhancers in Phase Change Materials for Electronic Devices
Authors
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Department of Mechanical Engineering, Presidency University, Bangalore - 560064, Karnataka ,IN
S. P. Prashanth -
Department of Mechanical Engineering, Presidency University, Bangalore - 560064, Karnataka ,INDevendra Dandotiya
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Department of Mechanical Engineering, Presidency University, Bangalore - 560064, Karnataka ,INA. M. Surendrakumar
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Daimler India Commercial Vehicles Pvt. Ltd., Kanchipuram - 602105, Tamil Nadu ,INUjwal Sharma
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Department of Mechanical Engineering, Presidency University, Bangalore - 560064, Karnataka ,INAnand K. Joshi
DOI:
https://doi.org/10.18311/jmmf/2023/36272Keywords:
Aluminum Oxide, Phase Change Material, Nano Particles, Nano-Phase Change MaterialAbstract
Nano-enhanced phase change materials (Nano-PCMs) are emerging as pivotal solutions in electronic cooling, primarily attributed to their remarkable energy storage and release abilities within confined spaces. These Nano-PCMs amalgamate phase change materials with nanoscale Aluminum Oxide (Al2O3) particles, elevating their thermal performance. Al2O3 nanoparticles employ a heat-based energy absorption mechanism, capturing thermal energy during temperature elevations and relinquishing it during cooling phases. This sets Nano-PCMs apart from conventional PCMs, especially for electronic cooling applications. Nano-PCMs find extensive use in electronic devices and data centers, contributing significantly to enhanced energy efficiency and reduced cooling expenditures. The selection of specific PCMs and Al2O3 nanoparticles depends on the targeted application. This study employs a 3D simulation to scrutinize heat distribution in a PCM/Nano-PCM-based heat sink, subject to variable heat fluxes ranging from 6 to 10 kW/m2, enabling a comprehensive evaluation of heat dissipation over time. The findings underscore the pivotal role of Al2O3 nanoparticles in enhancing the heat sink’s performance. At 6 kW/ m2 input, Nano-PCMs without fins reduce charging time by 6%, 11%, and 51% for Al2O3 nanoparticle volume fractions (φ) of 1%, 2.5%, and 5% in comparison to Pure-PCM (φ = 0%). Nano-PCMs with fins exhibit remarkable charging time reductions of 85%, 87%, and 89% for φ values of 69%, 78%, and 89% at 6 kW/m2. These results emphasize the superior heat transfer characteristics of Al2O3-infused Nano-PCMs, offering a compelling solution for efficient electronic cooling.
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