Thermal Conductivities for Sintered and Sphere-Pac Li sub 2 O and gamma exp - LiAlO sub 2 Solid Breeders with and Without Irradiation Effects

摘要

Thermal conductivities (k, k/sub eff/) have been estimated for sintered and sphere-pac Li sub 2 O and gamma -LiAlO sub 2 with and without neutron irradiation effects. The estimation is based on (1) data from unirradiated UO sub 2 , Li sub 2 O, and gamma -LiAlO sub 2 ; (2) data from irradiated dielectric insulator materials; and (3) relatively simple physical models. Comparison of model predictions with limited ex- and in-reactor data found reasonable agreement, thus lending credence for their use in design applications. The impact of thermal conductivities on tritium breeding and power generation in fusion solid-breeder blankets is briefly highlighted. (ERA citation 10:004028)