Theoretical calculation and analysis modeling for the effective thermal conductivity of Li_4SiO_4 pebble bed

摘要

The effective thermal conductivity of Li_4SiO_4 pebble bed is an important design parameter and must be known for the thermo-mechanical design of solid breeder blankets. The theoretical calculation and modeling analysis for the effective thermal conductivity of Li_4SiO_4 pebble bed are performed in this paper. The 2D and 3D theoretical equations for the thermal conductivity of Li_4SiO_4 pebble bed are given, moreover compared with the modeling results and other experimental data. The results show that the effective thermal conductivity of Li_4SiO_4 pebble bed can be preliminarily obtained by analysis modeling or theoretical calculation under the lack of experimental set-up at present.