Unsteady heat exchange at the dry spent nuclear fuel storage

被引:17
|
作者
Alyokhina, Svitlana [1 ,2 ]
Kostikov, Andrii [1 ,2 ]
机构
[1] Natl Acad Sci Ukraine, AN Podgorny Inst Mech Engn Problems, Dept Modeling & Identificat Thermal Proc, 2-10 D Pozharsky Str, UA-61046 Kharkov, Ukraine
[2] Kharkov Natl Univ, Dept Thermal Phys & Mol Phys, 4 Svobody Sq, UA-61022 Kharkov, Ukraine
关键词
Spent Nuclear Fuel; Unsteady Heat Exchange; Conjugate Heat Transfer Problems; Inverse Heat Transfer Problems; REPOSITORY;
D O I
10.1016/j.net.2017.07.029
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
Unsteady thermal processes in storage containers with spent nuclear fuel were modeled. The daily fluctuations of outer ambient temperatures were taken into account. The modeling approach, which is based on the solving of conjugate and inverse heat transfer problems, was verified by comparison of measured and calculated temperatures in outer channels. The time delays in the reaching of maximal temperatures for each spent fuel assembly were calculated. Results of numerical investigations show that daily fluctuation of outer temperatures does not have a large influence on the maximal temperatures of stored spent fuel, so that fluctuation can be neglected and only daily average temperature should be considered for safety estimation using the "best estimation" approach. (C) 2017 Korean Nuclear Society, Published by Elsevier Korea LLC.
引用
收藏
页码:1457 / 1462
页数:6
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