Measurements of heat transfer coefficients at low contact pressures for actively cooled bolted armour concepts in tore Supra

摘要

For the future upgrade of inner vessel components (CIEL project) a guard limiter for plasma ramp-up) and disruption protection will by installed on the high field side of the vacuum vessel. Among transient heat loads, this structure has to sustain a moderate heat flux in the range of ≤0.5 MW/m~2 during quasi steady state operation (1000 s). A bolted carbon-carbon (C-C) tile is preferred compared with a brazed tile solution due to the expected moderate heat fluxes, costs and the possibility of rapid replacement of individual tiles.