Importance

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Abstract

A nested pebble bed blanket surrounds a fusion reactor's vacuum chamber. The blanket includes stacks of nested pebbles composed of neutron multiplier shells filled with breeding spheroids. The shells have perforations passing through their inner and outer surfaces. The shells include therein perforated coolant distributor elements coupled to or unitary with the inner surfaces. Each perforated element is in line with a respective shell perforation, which allows coolant to flow into the sphere through the perforations and elements. When bombarded by neutrons, the nested pebbles produce fusion fuel to sustain fusion reactions. The coolant sweeps out the fusion fuel, and cools the breeding spheroids. Pebbles in the blanket are replenished with conveyor systems. A separator extracts the fusion fuel from the blanket coolant. Heat from the walls and the nested pebble bed is extracted by inert gases and then conveyed to a thermal storage and/or a power cycle.

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First Claim