Development of safety design technologies for sodium-cooled fast reactor coupled to thermal energy storage system with sodium-molten salt heat exchanger, 8; Study on improvement of heat transfer performance of heat exchangers

Hayashi, Masaaki*; Nakahara, Hirotaka*; Abe, Takashi*; Endo, Keita*; Miyata, Hajime*; Yamano, Hidemasa   

As part of the development of safety design technologies for sodium-cooled fast reactor coupled to thermal energy storage system with nitrate molten salt heat exchanger, we are considering optimization of heat exchanger type and measures to improve heat transfer. We have confirmed the effect of the heat transfer performance improvement, for which we conducted Computational Fluid Dynamics analyses with the analytical model of the selected heat exchanger type.