Thermal analysis of the cryostat feed through for the ITER Tokamak TF feeder

• Published in: Plasma science & technology Vol. 19; no. 4; pp. 99 - 106
• Main Author: 张善文 宋云涛 陆坤 王忠伟 张剑峰 秦永法
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.04.2017
• Subjects: CFT; ITER; TF feeder; thermal analysis; tokamak; 国际热核实验反应堆; 托卡马克; 有限元模型; 瞬态热分析; 磁体; 钢管混凝土; 馈线系统
• ISSN: 1009-0630; 1009-0630
• DOI: 10.1088/2058-6272/aa57ec

In Tokamaks,the toroidal field （TF） coil feeder is an important component that is used to supply the cryogens and electrical power for the TF coils.As a part of the TF feeder,the cryostat-feed through （CFT） is subject to low temperatures of 9 and 80 K inside and room temperature of 300 K outside.Based on the features of the International Thermonuclear Experimental Reactor TF feeder,the thermal performance of the CFT under the nominal conditions is studied.Taking into account the conductive,convective and radiation heat transfer,the finite element model of the CFT is built.Transient thermal analysis is performed to determine the temperatures of the CFT on the 9th day of cooldown.The model is assessed by comparing the cooling curves of the CFT after 9 days.If the simulation and experimental results are the same,the finite element model can be considered as calibrated.The model predicts that the cooling time will be approximately 26 days and the temperature distribution and heat load of the main components are obtained when the CFT reaches thermal equilibrium.This study provides a valid quantitative characterization of the CFT design.