Speaker
Shuang Wang
(School of Nuclear Science and Technology)
Description
Solid blanket is a core candidate of blanket structure for CFETR (Chinese Fusion Engineering Testing Reactor), and the effective thermal conductivity of ceramic pebble beds is a very significant parameter for the thermo-mechanical design of solid blankets. In order to obtain the effective thermal conductivity, theoretical calculation and experimental measurement are two common methods. Compared with theoretical calculation, experiment measurement is more accurate. An experiment platform was designed by University of Science and Technology of China (USTC). The platform using transient thermal probe with Monte Carlo inversion method which can improve probe precision. The singer size pebbles were contained in the stainless steel tube with an outer size diameter of 48mm, the length of 450mm, and the tube was put in the tube furnace. Singer size Li4SiO4 or Ti2TiO3 pebbles with the diameter of 1mm, and the packing factor of 64% were tested in the experiment. The experiment temperature ranged between room temperature to 800 °C, and helium pressure ranged from 0.1 MPa to 0.3MPa with very low velocity. The results presented in this work will help to create a database of the effective thermal conductivity of Li4SiO4 and Li2TiO3 pebble beds.
Keywords: Thermal conductivity; Pebble beds; Probe; Monte Carlo inversion method
Co-authors
Cheng Jin
(School of Nuclear Science and Technology, University of Science and Technology of China, Hefei Anhui, China)
Hongli Chen
(School of Nuclear Science and Technology, University of Science and Technology of China, Hefei Anhui, China)
Jie Zheng
(School of Nuclear Science and Technology, University of Science and Technology of China, Hefei Anhui, China)
Shuang Wang
(School of Nuclear Science and Technology, University of Science and Technology of China, Hefei Anhui, China)
