Experimental investigation on graphene based nanoparticles enhanced phase change materials (GbNePCMs) for thermal management of electronic equipment

The present study focuses on the thermal management of electronic components using nanoparticles enhanced phase change materials (NePCMs) based heat sinks for the reduction in the baseline temperature, to heighten the operational time and ensure the enhanced functionality and reliability of the working system. RT-44HC and RT-64HC are used as the base PCMs along with the incorporation of GNPs (0.002wt%, 0.005wt% and 0.008wt%) for different heating loads i.e. 0.86 KW/m², 1.44 KW/m² and 2.40 KW/m². Results revealed that after 90 min of charging phase, RT-44HC/GNPs (0.008wt%) has depicted best performance with the maximum reduction of 25% in the baseline temperature for 0.86 KW/m². Subsequently, at 1.44 KW/m² RT-44HC/GNPs (0.005wt%) and RT-64HC/GNPs (0.008wt%) have shown maximum reduction of 13.6% and 11.8% respectively. For higher heating load i.e. 2.40 KW/m² RT-64HC/GNPs has revealed best performance with maximum reduction of 16.37% in the temperature. Hence, for low heating loads, RT-44HC composites are best recommended whereas, RT-64HC composites are suitable for higher power levels and high heating loads.