Thermal conductivity measurements of insulators for fusion blankets

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Alumina-silica mat (8 lb/ft/sup 3/) varied in thermal conductivity in air and Ar from 0.06 W/m- K at 300/sup 0/C to 0.22 W/m- K at 1000/sup 0/C, but in He it increased to 0.24 W/m- K at 300/sup 0/C and 0.54 W/m- K at 1000/sup 0/C, while in steam it was about midway between these values. The carbon and graphite felts behaved similarly, but the rigid and denser (24 lb/ft/sup 3/) zirconia fiberboard exhibited superior insulating properties: 0.07 W/m- K at 300/sup 0/C and 0.14 W/m- K at 1000/sup 0/C in air and Ar, and 0.13 W/m- K at 300/sup ... continued below

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Pages: 5

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Horn, F.L.; Fillo, J.A. & Powell, J.R. January 1, 1981.

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Description

Alumina-silica mat (8 lb/ft/sup 3/) varied in thermal conductivity in air and Ar from 0.06 W/m- K at 300/sup 0/C to 0.22 W/m- K at 1000/sup 0/C, but in He it increased to 0.24 W/m- K at 300/sup 0/C and 0.54 W/m- K at 1000/sup 0/C, while in steam it was about midway between these values. The carbon and graphite felts behaved similarly, but the rigid and denser (24 lb/ft/sup 3/) zirconia fiberboard exhibited superior insulating properties: 0.07 W/m- K at 300/sup 0/C and 0.14 W/m- K at 1000/sup 0/C in air and Ar, and 0.13 W/m- K at 300/sup 0/C and 0.17 W/m- K at 1000/sup 0/C in steam, but rising to 0.15 W/m- K at 300/sup 0/C and 0.49 W/m- K at 1000/sup 0/C in He. The lighter zirconia felt (14 lb/ft/sup 3/) in steam at 1000/sup 0/C was thought to be best at 0.23 W/m- K and only 0.40 W/m- K in He at 1000/sup 0/C.

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Pages: 5

Notes

NTIS, PC A02/MF A01.

Source

  • Fusion reactor materials meeting, Seattle, WA, USA, 9 Aug 1981

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  • Other: DE81030028
  • Report No.: BNL-29779
  • Report No.: CONF-810831-50
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 6256985
  • Archival Resource Key: ark:/67531/metadc1114114

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1981

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  • Feb. 22, 2018, 7:45 p.m.

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  • March 26, 2018, 12:46 p.m.

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Horn, F.L.; Fillo, J.A. & Powell, J.R. Thermal conductivity measurements of insulators for fusion blankets, article, January 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1114114/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.