Uncertainties in liquid-metal fusion blanket design windows
Conference
·
· Trans. Am. Nucl. Soc.; (United States)
OSTI ID:5577356
Lithium- and lead-lithium (17Li-83Pb)-cooled fusion blankets offer the promise of excellent neutronic performance, high fusion to electrical energy conversion efficiency, and design simplicity. However, interactive effects such as magnetohydrodynamics (MHD) pressure drop, flow distribution, heat transfer, corrosion, and stress appear to have large enough uncertainties to make the presence of a useful design window questionable, especially in large tokamak reactors. The work reported here attempts to: (a) define limits for the design windows for lithium and lead-lithium as breeders and coolants with stainless steel, ferritic steel, and refractory alloy structural materials in various tokamak fusion reactors and (b) quantify the impact of uncertainties in these limits on the design window. Steady-state MHD pressure drop and heat transfer models are developed and used to quantify the effects of varying several tokamak reactor and blanket design parameters and materials properties. Uncertainties in the present pressure drop equations and calculation methods are also considered. Calculations are used to evaluate the impact of the coolant inlet temperature on the thermal cycle efficiency.
- OSTI ID:
- 5577356
- Report Number(s):
- CONF-860610-
- Conference Information:
- Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 52
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201 -- Fusion Power Plant Technology-- Blanket Engineering
700204* -- Fusion Power Plant Technology-- Cooling Systems
ALLOYS
BREEDING BLANKETS
COOLING SYSTEMS
EFFICIENCY
ELEMENTS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUID MECHANICS
FLUIDS
HEAT TRANSFER
HYDRODYNAMICS
LEAD ALLOYS
LIQUID METALS
LIQUIDS
LITHIUM ALLOYS
MAGNETOHYDRODYNAMICS
MECHANICS
METALS
PRESSURE DROP
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
TEMPERATURE GRADIENTS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700201 -- Fusion Power Plant Technology-- Blanket Engineering
700204* -- Fusion Power Plant Technology-- Cooling Systems
ALLOYS
BREEDING BLANKETS
COOLING SYSTEMS
EFFICIENCY
ELEMENTS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUID MECHANICS
FLUIDS
HEAT TRANSFER
HYDRODYNAMICS
LEAD ALLOYS
LIQUID METALS
LIQUIDS
LITHIUM ALLOYS
MAGNETOHYDRODYNAMICS
MECHANICS
METALS
PRESSURE DROP
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
TEMPERATURE GRADIENTS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS