Analytical prediction of thermal performance of hypervapotron and its application to ITER
- General Atomics, San Diego, CA (United States)
- JET Joint Undertaking, Abingdon (United Kingdom)
A hypervapotron (HV) is a water cooled device made of high thermal conductivity material such as copper. A surface heat flux of up to 30 MW/m{sup 2} has been achieved in copper hypervapotrans cooled by water at a velocity of 10 m/s and at a pressure of six bar. Hypervapotrons have been used in the past as beam dumps at the Joint European Torus (JET). It is planned to use them for diverter cooling during Mark II upgrade of the JET. Although a large amount of experimental data has been collected on these devices, an analytical performance prediction has not been done before due to the complexity of the heat transfer mechanisms. A method to analytically predict the thermal performance of the hypervapotron is described. The method uses a combination of a number of thermal hydraulic correlations and a finite element analysis. The analytical prediction shows an excellent agreement with experimental results over a wide range of velocities, pressures, subcooling, and geometries. The method was used to predict the performance of hypervapotron made of beryllium. Merits for the use of hypervapotrons for International Thermonuclear Experimental Reactor (ITER) and Tokamak Physics Experiment (TPX) are discussed.
- Research Organization:
- General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-89ER51114
- OSTI ID:
- 7192534
- Report Number(s):
- GA-A-21035; CONF-920930-8; ON: DE93001356
- Resource Relation:
- Conference: 17. symposium on fusion technology, Rome (Italy), 14-18 Sep 1992
- Country of Publication:
- United States
- Language:
- English
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A model for analytical performance prediction of hypervapotron
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Related Subjects
DIVERTORS
COOLING SYSTEMS
BERYLLIUM
COPPER
HEAT TRANSFER
HYDRAULICS
ITER TOKAMAK
PERFORMANCE
THERMAL CONDUCTIVITY
ALKALINE EARTH METALS
CLOSED PLASMA DEVICES
ELEMENTS
ENERGY TRANSFER
FLUID MECHANICS
MECHANICS
METALS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSITION ELEMENTS
700450* - Fusion Technology- Blankets & Cooling Systems- (1992-)