[en] 'Nanofluids' could be regarded as an alternative for the effective coolant in the various fields of industry. Those could be produced by suspending the nanometric solids in the traditional heat transfer fluids and shows dramatic increment in thermal conductivity compared to conventional fluids. Several researchers have carried out the experiments to confirm the capability of nanofluids in boiling heat transfer. They found that nanofluids did not improve the heat transfer, while their CHF was abnormally increased. Since then, the focus has been moved to the mechanism of reason why CHF point of nanofluids in boiling curve delayed. Milanova found the reason in the ionic properties of nanofluids. Kim et al. attributed the CHF enhancement by high surface wettability of the nanoparticle layer on a heater. Kim et al. concluded that the significant CHF enhancement is a consequence of not only increased surface wettability but also improved capillarity due to the surface deposition of nanoparticles. The objective of the present work is to investigate the effect of nanofluids on boiling heat transfer during rapid quenching process of platinum wire. In this paper, the experimental results performed using water-based Si nanofluids are reported