Study of design parameters for minimizing the cost of electricity of tokamak fusion power reactors

摘要

The impact of the design parameters on the cost of electricity(COE)is studied through a parameters survey in order to minimize the COE. Three kinds of operation modes are by a coupled physics-engineering-cost computer system code. Deuterium-tritium type, 1000 MW(e) at electric bus bar, steady state tokamak reactors with aspect ratios A from 3 to 4.5 are assumed. Several criteria are used for the parameter survey; for example,(a)the thermal to electrical conversion Efficiency is assumed to be 34.5/100 using water as a coolant;(b)the average neutron wall load must Not exceed 5 MW/m~2 for plasma major radius R_p>5 m;(c)a 2 MeV neutral beam injector(NBI)is Applied.