Thermal-hydraulic and neutronic considerations for designing a lithium-cooled tokamak blanket

Technical Report · Fri Dec 01 00:00:00 EST 1978

DOI:https://doi.org/10.2172/5695050· OSTI ID:5695050

Chao, J; Mikic, B; Todreas, N

A methodology for the design of lithium cooled blankets is developed. The thermal-hydraulics, neutronics and interactions between them are extensively investigated. In thermal hydraulics, two models illustrate the methodology used to obtain the acceptable ranges for a set of design parameters. The methodology can be used to identify the limiting constraints for a particular design. A complete neutronic scheme is set up for the calculations of the volumetric heating rate as a function of the distance from the first wall, the breeding ratio as a function of the amount of structural material in the blanket, and the radiation damage in terms of atom displacements and gas production rate. Different values of the volume percent of Type-316 stainless steel are assigned in four breeding zones to represent a nonuniformly distributed structural material which satisfies various thermal-hydraulic requirements. The role that the radiation damage plays in the overall design methodology is described. The product of the first wall lifetime and neutron loading is limited by the radiation damage which degrades the mechanical properties of the material.

• Research Organization: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
• DOE Contract Number: EY-76-S-02-2431
• OSTI ID: 5695050
• Report Number(s): COO-2431-T1; TRN: 80-000496
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BREEDING BLANKETS
HYDRAULICS
THERMODYNAMICS
TOKAMAK TYPE REACTORS
BREEDING
BREEDING RATIO
COOLANTS
LITHIUM
NEUTRON REACTIONS
PHYSICAL RADIATION EFFECTS
RADIATION HEATING
TRITIUM
ALKALI METALS
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONVERSION RATIO
ELEMENTS
FLUID MECHANICS
HADRON REACTIONS
HEATING
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MECHANICS
METALS
NUCLEAR FUEL CONVERSION
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
RADIATION EFFECTS
RADIOISOTOPES
REACTOR COMPONENTS
THERMONUCLEAR REACTORS
YEARS LIVING RADIOISOTOPES
700201* - Fusion Power Plant Technology- Blanket Engineering