Journal
FUSION ENGINEERING AND DESIGN
Volume 125, Issue -, Pages 545-550Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2017.05.020
Keywords
Effective thermal conductivity; Pebble bed; Ceramic breeder; Lithium orthosilicate; Test blanket module
Categories
Funding
- National Magnetic Fusion Science Program of China MOST [2014GB111003]
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Li4SiO4 is a tritium breeder material for helium cooled solid breeder blanket concept. The thermal properties of ceramic pebble beds provide important support for designing the solid breeder test blanket module (TBM). A new apparatus was developed to measure the effective thermal conductivity of a packed ceramic pebble bed by steady state method. Accordingly, the effective thermal conductivity of a non-compressed Li4SiO4 pebble bed at temperatures ranging from 300 degrees C to 640 degrees C was measured as well in this study. The packing factor was about 59.7% for the single size pebble bed and helium at atmospheric pressure was used as a filling gas. The experimental results show that the effective thermal conductivity increased with increasing the average bed temperature. (c) 2017 Elsevier B.V. All rights reserved.
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