Effects of salinity on heat transfer coefficient of forced convective single-phase seawater flow

永武 拓; Jiao, L.; 上澤 伸一郎; 高瀬 和之; 吉田 啓之

no journal, , 

In the 2011 Fukushima Daiichi nuclear disaster, seawater was injected into the reactors to cool down the nuclear fuels. The seawater provided a potential to affect the heat transfer due to the changes of the physical properties of the coolant. Therefore, in this study, measurement of the basic thermal-hydraulic data of the salt solutions was performed. The experimental parameters adopted in this study were the salinity, Reynolds number, the mass flux, the inlet temperature and the heat flux of the inner wall. In the experiment, the salinity effect on the heat transfer ability and the hydraulic characters were observed. In a non-dimensional analysis of the single phase cases at high mass flux, all of the measured cases can be predicted well by the Sider-Tate correlation, no obvious changes of the heating ability was found. Hence, in single phase cases without boiling, it is thought that salt solution owns similar heat transfer ability of water except the influence of the fluid property difference.