A MIXED CORE FOR SUPERCRITICAL WATER-COOLED REACTORS
In this paper, a new reactor core design is proposed which bases on a mixed core concept consisting of a thermal zone and a fast zone. The geometric structure of the fuel assembly of the thermal zone is similar to that of a conventional thermal SCWR reactor core with two fuel pin rows between the moderator channels. In spite of count-current flow mode, the co-current flow mode is used to simplify the design of the reactor core and the fuel assembly. The water temperature at the exit of the thermal zone is much lower than that at the pressure vessel outlet. This reduces the maximum cladding temperature of the thermal zone. Due to the high velocity of the fast zone, a wider lattice of fuel assembly can be applied and the non-uniformity of the local heat transfer can be minimized. This mixed core combines the merits of some existing thermal SCWR cores and fast SCWR cores, and is proposed for further detailed analysis.
Supercritical water cooled reactor mixed core thermal spectrum fast spectrum co-current flow mode
Cheng,X. Liu,X.J. Y.H.Yang
School of Nuclear Science and Engineering, Shanghai Jiao Tong University Dongchuan Road 800, Shanghai, 200240, China
国际会议
上海
英文
236-247
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）