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

Addition of NePCMs in the heat sink, reduced its base temperature. At 0.86KW/m² of heat input, RT-44HC has shown maximum temperature reduction of 25% whereas, RT-64HC has shown minimum temperature reduction of 13%. At higher heating loads i.e. 2.40KW/m², RT-64HC/GNPs with 0.005wt% gave the best temperature decrement up to 16.37%. RT-44HC based NePCM depicts maximum enhancement of 2.61 times against 25 W power at SPT of 50℃ whereas pure RT-44HC has showed the enhancement only 2 times. It proves the fact that nanoparticles enhance the operational time of the base PCM. For low heating loads, RT-44HC composites are best recommended whereas, RT-64HC composites are suitable for higher power levels and high heating loads.