FEB—E氚循环系统的计算机模拟

对聚变实验增殖堆（ＦＥＢ）工程概要设计的氚燃料循环构造了一个动态子系统模型，研制了模拟氚燃料循环系统的计算机程序ＳＷＩＴＲＩＭ，计算运行一年后１０个子系统中的氚投料量和整个推系统总的氚投料量，这对预示起动一个聚变热功率的１５０ＭＷ量级的实验增殖堆所需的最少初始氚投料量有参考价值，计算结果表明，要求的最少初氚贮备量除了与燃料气体净化系统和同位互分离系统中氚的平均逗留时间有关外，还与包层液态锂中提取氚

COMPUTER SIMULATION OF THE FEB E TRITIUM CYCLE SYSTEM

Based on the fusion experimental breeder FEB E engineering outline design, a dynamic subsystem model is constructed for tritium fuel cycle system. A computer simulation code, SWITRIM, has been developed to simulate the tritium fuel cycle system. The tritium inventories in 10 subsystems are calculated during one year operation period. This code is utilized to predict the required minimum initial tritium storage to start up an experimental breeder of 150 MW fusion thermal power. Calculation results show that the required minimum initial tritium storage strongly depends on the mean residence time in the subsystems of plasma exhausted gas, FCU and ISS; besides ,the minimum initial tritium inventory also depends on the tritium permeability in the first wall, limiter, divertor, blanket and tritium production in the beryllium neutron multiplier.