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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 23:58 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Passive thermal management in microelectronics using phase change materials
Authors:
Traian TROFIN, Adriana-Elena BĂLAN
Affiliation:
University of Bucharest, Faculty of Physics, 405 Atomiștilor str., PO Box MG-38, Bucharest-Măgurele, Romania
E-mail
tttraian@yahoo.com
Keywords:
phase change materials, passive thermal management, latent heat
Abstract:
The study aims to evaluate the capability of organic phase change materials to passively regulate the temperature in electronics. Paraffin has been selected owing to the high latent heat, chemical stability, availability and cost. Furthermore, paraffin has been additivated with graphite to increase the thermal conductivity, thus potentially improving the overall thermal storage efficiency of the phase change material. The graphite was mixed with the paraffin through a powerful ultra-high shear mixer at a speed of 1500 rotations per minute for 5 minutes. Firstly, the latent heat was estimated by differential scanning calorimetry. The experimental approach followed a series of steps to verify the effectiveness of paraffin and paraffin-graphite composite for cooling the Raspberry Pi processor. In the experiments, paraffin and paraffin-graphite composite samples of approximately 0.6 g were placed onto a Raspberry Pi processor. A code in the Python programming language was used to monitor the CPU temperature while running intensive calculus. The efficiency of the paraffin in the CPU cooling process and the solid-to-liquid phase transition of the paraffin blocks were evaluated.
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