聚变驱动次临界堆经济性分析

Economic analysis of the fusion-driven subcritical system

利用自主开发的聚变系统分析软件SYSCODE对聚变驱动次临界堆的经济性进行了计算和分析。首先,对典型的环径比(标准环径比)设计方案,从堆芯几何参数、物理及工程参数等两个方面分析它们与成本的关系,然后,详细分析低、标准、高环径比三套候选设计方案的经济性与中子学参数的关系。研究发现,其经济性主要取决于包层中子学参数,另外,其经济性与几何、物理及工程参数的关系在一定条件下有别于纯聚变系统。

The economic performance of the Fusion-Driven Subcritical system (FDS) is discussed. At first, as an example, the impacts of parameters, such as plasma aspect-ratio, elongation, normalized beta, on-axis toroidal field and the blanket energy-gain are analyzed on the costs of the typical case (moderate aspect-ratio) of FDS. Then, the economic characteristics of the 3 possible scenarios of FDS are estimated with respect to the neutronics parameters. The results calculated with the SYSCODE developed by the FDS team show that the cost of electricity of Scenario-1 (low aspect-ratio) and Scenario-2 (moderate aspect-ratio) of FDS is cheaper than that of pure fusion power plant at the same plant size (1 GWe). The cost of electricity of the FDS power plant depends heavily on the functions of blanket and the blanket energy-gain.