关键词: EAST, 第一壁, 水冷结构, 传热对比

Abstract:

In order to compare heat transfer capacity of EAST first wall water-cooled structure more directly and give the selection reference in future design, this article compares the heat transfer capacities of different water-cooled structures in same conditions with the method of simulation analysis, and gets the comparison result by comparing the temperature of materials in different structures. At the same time, it made an overall comparison for various structures in considering the allowable temperature of various materials, the difficulty of manufacturing process and the project cost. It can be seen from the calculation results that the tungsten string structure has the best heat transfer capacity, followed by the welded structure, and the bolt connection structure is worst. Combining the cost and process difficulty, we can see that the tungsten string structure is still the most suitable structure for high heat flux area. Welding structure with W/TZM/C as first wall material is more suitable for lower heat flux area. Bolted structure will be replaced gradually in the future.

Key words: EAST, First wall, Water-cooled structure, Heat transfer capacity