The China Fusion Engineering Test Reactor (CFETR) is the next tokamak in China's roadmap for realizing commercial fusion energy. The CFETR cryogenic system is crucial to creating and maintaining operational conditions for its superconducting magnet system and thermal shields. The preliminary conceptual design of the CFETR cryogenic system has been carried out with reference to that of ITER. It will provide an average capacity of 75 to 80 kW at 4.5 K and a peak capacity of 1300 kW at 80 K. The electric power consumption of the cryogenic system is estimated to be 24 MW, and the gross building area is about 7000 m2. The relationships among the auxiliary power consumed by the cryogenic system, the fusion power gain and the recirculated power of CFETR are discussed, with the suggestion that about 52% of the electric power produced by CFETR in phase II must be recirculated to run the fusion test reactor.
中国核聚变工程实验堆（CFETR）是中国实现商业聚变能源路线图中的下一代托卡马克装置。CFETR低温系统对于其超导磁体系统和热屏蔽层运行条件的建立与维持至关重要。CFETR低温系统的初步概念设计已参照ITER进行。该系统将在4.5 K温度下提供75至80 kW的平均制冷能力，并在80 K温度下提供1300 kW的峰值制冷能力。低温系统的电力消耗估计为24 MW，总建筑面积约为7000 m2。本文讨论了CFETR低温系统所消耗的辅助功率、聚变功率增益以及再循环功率之间的关系，并提出CFETR第二阶段产生的电能中约有52%必须再循环以运行聚变测试反应堆。