TY - JOUR
T1 - Canister spacing in high-level radioactive nuclear waste repository
AU - Zhou, Xiang yun
AU - Sun, De'an
AU - Tan, Yunzhi
AU - Zhou, Annan
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/6/15
Y1 - 2020/6/15
N2 - One of the core problems of waste canisters layout in high-level radioactive waste repository is the evolution of the temperature field. On basis of the layered thermal analysis model for single waste canister, the expression of temperature increment at any location in surrounding rock in the repository was obtained by the superposition principle. The initially estimated value of the canister spacing (CS) was determined according to the temperature design criterion. Finally, the influence of relevant parameters on the canister surface temperature (CST) was analyzed. The results were drawn as follows: (a) Taking thermal conductivities of 2.4 and 2.8 W/(m × K) for the rock as examples, the appropriate CS is 12.2 and 13.5 m under the tunnel spacing of 40 m, respectively. (b) The greater the CS, the greater the thermal conductivity of bentonite and rock, the smaller the CST would be. (c) The thicker the buffer layer, the less the heat flux inside the canister would spread out.
AB - One of the core problems of waste canisters layout in high-level radioactive waste repository is the evolution of the temperature field. On basis of the layered thermal analysis model for single waste canister, the expression of temperature increment at any location in surrounding rock in the repository was obtained by the superposition principle. The initially estimated value of the canister spacing (CS) was determined according to the temperature design criterion. Finally, the influence of relevant parameters on the canister surface temperature (CST) was analyzed. The results were drawn as follows: (a) Taking thermal conductivities of 2.4 and 2.8 W/(m × K) for the rock as examples, the appropriate CS is 12.2 and 13.5 m under the tunnel spacing of 40 m, respectively. (b) The greater the CS, the greater the thermal conductivity of bentonite and rock, the smaller the CST would be. (c) The thicker the buffer layer, the less the heat flux inside the canister would spread out.
KW - Canister spacing (CS)
KW - Canister surface temperature (CST)
KW - Layered thermal model
KW - Thermal conductivity
UR - https://www.scopus.com/pages/publications/85078174445
U2 - 10.1016/j.anucene.2020.107335
DO - 10.1016/j.anucene.2020.107335
M3 - 文章
AN - SCOPUS:85078174445
SN - 0306-4549
VL - 141
JO - Annals of Nuclear Energy
JF - Annals of Nuclear Energy
M1 - 107335
ER -