Thermal conductivity and tritium retention in Li{sub 2}O and Li{sub 2}ZrO{sub 3}

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Lithium oxide (Li{sub 2}O) and lithium zirconate (Li{sub 2}ZrO{sub 3}) are promising ceramic breeder materials for fusion reactor blankets. The thermal and tritium transport databases for these materials are reviewed. Algorithms are presented for predicting both the temperature distribution and the retained tritium profile across sintered-product and pebble-bed regions. Sample design calculations are also performed to demonstrate the relative advantages of each breeder ceramic. For Li{sub 2}O, the thermal conductivity of sintered-product material has been measured over a wide range of temperatures and densities. Data are also available for the effective thermal conductivity of a pebble bed (in atmospheric helium) ... continued below

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14 p.

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Billone, M.C. August 1, 1997.

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Lithium oxide (Li{sub 2}O) and lithium zirconate (Li{sub 2}ZrO{sub 3}) are promising ceramic breeder materials for fusion reactor blankets. The thermal and tritium transport databases for these materials are reviewed. Algorithms are presented for predicting both the temperature distribution and the retained tritium profile across sintered-product and pebble-bed regions. Sample design calculations are also performed to demonstrate the relative advantages of each breeder ceramic. For Li{sub 2}O, the thermal conductivity of sintered-product material has been measured over a wide range of temperatures and densities. Data are also available for the effective thermal conductivity of a pebble bed (in atmospheric helium) with 55% packing fraction for the 5-mm-diameter/75%-dense pebbles. Similar results are available for sintered-product and pebble-bed (60% packing fraction for 1.2-mm-diameter/80%-dense pebbles in atmospheric He) Li{sub 2}ZrO{sub 3}. Hall and Martin model predictions are in reasonable agreement with both sets of pebble bed data. Thus, the databases and calculational algorithms are well established for performing thermal analyses. 15 refs., 5 figs.

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14 p.

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INIS; OSTI as DE97053458

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  • 4. combined Japan-US International Energy Agency Specialists` workshop on ceramic breeder blanket interactions, Kyoto (Japan), 9-11 Oct 1997

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  • Other: DE97053458
  • Report No.: ANL/ET/CP--93503
  • Report No.: CONF-971098--
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 544720
  • Archival Resource Key: ark:/67531/metadc691435

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  • August 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 15, 2015, 11:43 a.m.

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Billone, M.C. Thermal conductivity and tritium retention in Li{sub 2}O and Li{sub 2}ZrO{sub 3}, article, August 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc691435/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.