ADVANTAGES AND DISADVANTAGES OF HIGH POWER DENSITY FUSION REACTORS. FIRST WALL THERMOMECHANICAL LIMITS
A thermomechanical first wall model is coupled to a simple economics model based on costings contained in recent comprehensive fusion reactor studies. The benefits of compact devices result from the reduced size of the first wall, blanket, shield and coils; the disadvantages include the more frequent replacement of the first wall and blanket, and a lower coolant temperature and higher pumping power. The analysis leads to a general relationship between the first wall loading and relative generating costs. The first wall operating conditions (material, temperature, etc.) govern the maximum heat loading allowed. Two materials are considered, a copper alloy and stainless steel. The thermomechanical results show that the copper alloy allows higher surface heat fluxes; these imply a potential for higher wall loadings and lower overall costs for reactors emplying a copper alloy first wall. However, the materials database for copper alloys requires considerable expansion.
Bibliographic Reference: WRITE TO HER MAJESTY'S STATIONERY OFFICE, P.O. BOX 276, LONDON SW8 5DT (UK) MENTIONING REPORT CLM-R248, 1984, PRICE: UKL 5.00
Record Number: 1989124078300 / Last updated on: 1987-01-01
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