Journal
ENERGY
Volume 227, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.120495
Keywords
Nanoparticle; Mass fraction; Power level; Thermal resistance; Melting ratio
Categories
Funding
- Natural Science Foundation of Hebei Province [E2019202184]
- Project of Innovation Ability Training for Postgraduate Students of Education Department of Hebei Province [CXZZSS2021046]
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This paper investigated the performance of composite phase change materials with added Al2O3 nanoparticles at different power levels, and found that it can significantly reduce heat source temperature and thermal resistance, as well as improve heat storage and heat conduction capabilities.
In this paper, paraffin mixed with nanoparticles Al2O3, CuO, and multi-walled carbon nanotubes (MWCNTs) were prepared for cooling multiple heat sources. For thermal management of heat sources, performances of the composite phase change materials (PCMs) were investigated at different heating power. Enhanced performance in terms of heat sources temperature, temperature difference between two heat sources, and thermal resistance was experimentally tested and analyzed at various mass fractions of nanoparticle and various power levels. It is found that by using 1.0 wt% Al2O3 composite PCMs the minimal thermal resistance is achieved at the range from 0.63 degrees C/W to 0.71 degrees C/W for all power levels, and the heat storage and heat conduction of the presented composite PCMs are enhanced as well as the melting ratio. At 8 W power level, the temperature of the heat source 1 for 1.0 wt% Al2O3 composite PCMs decreases by 17.4% compared to that for pure paraffin. (C) 2021 Elsevier Ltd. All rights reserved.
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