Abstract: Carbon nanotubes(CNTs) aresomeof most valuable materials that have highest thermal conductivity.The thermal conductivity of individual carbon nanotubes is 2000 Wm−1K−1 compared with the thermal conductivity 419 Wm−1K−1 of silver.Therefore, carbon nanotubes have opened a new way for heat dissipation for high power electronic components, such as micro-processor, high brightness LED, etc. In this paper, we present the simulation results on heat dissipation for a high power electronic component using carbon nanotube nanofluids.