CFETR TF线圈盒冷却的初步设计

Preliminary cooling design of TF coil case on CFETR

中国聚变工程实验堆(CFETR)是中国新一代聚变装置,环向场(TF)磁体系统是托卡马克关键部件之一。根据TF线圈冷却要求,给出CFETR TF线圈盒冷却的初步设计。通过开展2D模拟分析TF线圈盒冷却通道数量、质量流量、位置等参数对冷却效果的影响。模拟结果表明,增加冷却通道数量可显著减少导体热流量;而增加质量流量对冷却效果的提高不明显。线圈盒内腿段盖板(AP)组件冷却通道由16条增加至30条后,绕组热流量降低至2.01 W/m,减小了约37%。同时,模拟发现缩短冷却通道与拐角间的距离,可显著提升冷却效果。

The China Fusion Engineering Test Reactor(CFETR) is the next Tokamak in the roadmap for the demonstration reactor in China.The toroidal field(TF) magnet is a crucial system in the Tokamak.According to the requirements of TF, a preliminary cooling loop design of TF coil case was presented.2 D analysis was applied to study the effect of the parameters of the cooling channels on the heat transfer from case to conductor, such as the channel numbers, position, and the mass flow rate.It is found that increasing the number of cooling channels can significantly reduce the heat transfer to the conductors from case;increasing the mass flow rate of cooling channel can slightly improve the cooling effect, but the impact is relatively small.With the increase of the number of closure plate facing plasma for the straight board leg(AP) cooling channels from 16 to 30, the heat flux to the winding is reduced to 2.01 W/m, the improvement is about 37%.In addition, shortening the distance between the cooling groove and the corner can significantly improve the cooling effect.