Abstract
Critical Heat Flux (CHF) is enhanced by deposited nano-particle on metal surface. So, nuclear reactor safety performance is likely to be improved by using nano-fluid. CHF enhancement by nano-fluid is unstable and enhanced mechanism is not clear. So, it is hard to use nano-fluid for nuclear reactor. Then, stabilizing and Maximizing CHF enhancement is important. In this study, experiments with various diameter and material (TiO_2, SiO_2, Al_2O_3) of nano-particle is carried out. The experimental result showed that, using 14nm(smallest size) TiO_2 particle, the CHF enhancement is higher and time scale required for CHF enhancement is shorter than other diameter and material.
