1、乏燃料贮存设备热工流体分析 The thermal-hydraulic analysis of spent fuel storage device 中广核研究院 CNPRI 周有新 YOUXIN ZHOU March 21, 2019,Realize innovation.,Restricted Siemens AG 2017,.,乏燃料湿式贮存热工水力分析,乏燃料干式贮存热工水力分析,The thermal-hydraulic analysis of spent fuel wet storage,The thermal-hydraulic analysis of spent fuel dry
2、 storage,Agenda,.,乏燃料湿式贮存热工水力分析,乏燃料干式贮存热工水力分析,The thermal-hydraulic analysis of spent fuel wet storage,The thermal-hydraulic analysis of spent fuel dry storage,Agenda,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet storage,A spent fuel storage pool (SFSP) at each unit of the Nuclear P
3、ower Plant is used to store the unloaded spent fuel assemblies. The thermal-hydraulic analysis for SFSP is performed to evaluate the cooling capability of the SFSP in order to prevent the local boiling occurs in the huge amount of racks and narrow flow paths.,核电站的乏燃料水池用来贮存换料的乏燃料组件，热工水力分析评估水池的冷却能力，确保
4、水池中不会发生局部沸腾。,The reference SFSP contains more than 900 rack cells with the same structure and pitch between each other, it is necessary to determine an optimized mesh for one rack cell.,乏燃料贮存格架 Fuel storage rack,乏燃料水池中设有900多个相同结构的乏燃料贮存格架，需对其网格进行敏感性分析。,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of
5、spent fuel wet storage,出口腔室Outlet plenum,活性区Active zone,非加热区Non-heating zone,进口腔室Inlet plenum,燃料组件 Fuel assembly inside the rack,非加热区Non-heating zone,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet storage,整体视图 overall view,流体单元 fluid cell,格架单元轴向温度分布 temperature variation along a rack
6、 cell,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet storage,Mesh1足以表达格架内部的传热情况。 the coarse mesh (mesh1) is sufficient to describe the heat-up inside the rack cell,整体网格图 Overall view of SFSP mesh,乏燃料组件 Fuel Assemblies,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet sto
7、rage,卸料组件惩罚方法 penalizing method,卸料组件中心方法 center method,乏燃料组件活性段三维温度场 3D view of the water temperature filed in the active zones,61.02,58.01,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet storage,底部横向速度场 Transverse velocity field in the bottom (penalizing method),热段纵向温度场 Temperature f
8、ield in the hotzone (penalizing method),乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet storage,As a previous work, the mesh sensitivity study can get an accurate enough rack cell mesh to model the whole SFSP. Two FA lay out scenarios are performed, the comparing results show that thi
9、s penalizing method is more conservative. Moreover, the calculation results can better describe the thermal-hydraulic phenomena occurred in the SFSP.,网格敏感性分析可以得到单个贮存单元的最优化网格； 分析对比两种不同的乏燃料布置方案，找到最保守的方法； 计算结果可以描述乏燃料水池里的热工水力现象。,乏燃料湿式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel wet storage,.,乏燃
10、料湿式贮存热工水力分析,The thermal-hydraulic analysis of spent fuel wet storage,Agenda,乏燃料干式贮存热工水力分析,The thermal-hydraulic analysis of spent fuel dry storage,干式贮存容器 Dry cask storage system,金属运输容器 Metal transport cask,HOLTEC HI-STORM,NAC-STC,乏燃料干式贮存热工水力分析 The thermal-hydraulic analysis of spent fuel dry storage
11、,乏燃料干式贮存厂房 workshop,混凝土外筒容器 Storage overpack,金属内胆容器 Multi Purpose Canister,干式贮存容器 Dry cask storage system,金属内胆容器 Multi Purpose Canister,混凝土外筒容器 Storage overpack,厂房 workshop,1,2,3,干式贮存容器 Dry cask storage system,燃料组件等效导热系数 Fuel Assembly,内胆传热特性计算 MPC heat transfer,外筒传热特性计算 Overpack heat transfer,厂房传热特性
12、计算 Workshop heat transfer,干式贮存容器 Dry cask storage system,燃料棒温度计算结果（示例） fuel rod temperature field for Tavg=64,贮存单元 横截面 网格模型（局部） Cross section of FA,燃料棒 和导向管 网格模型 Fuel rod and guide tube,二维网格模型图 2D calculation mesh (partial),干式贮存容器 Dry cask storage system,轴向热导率 Axial heat conductivity,径向热导率 Radial he
13、at conductivity,干式贮存容器 Dry cask storage system,燃料组件等效热导率 Fuel assembly equivalent heat conductivity coefficient,筒体周围的流体流速明显大于厂房其他位置的流体流速，气流受筒体加热后主要向厂方顶部流动； 厂房内气体温升约15。,速度场 Velocity field,温度场 Temperature field,The gas velocity near the cask is bigger than other place, the flow direction is up. The te
14、mperature rise amount of the gas is about 15.,干式贮存容器 Dry cask storage system,厂房模型纵截面分析结果 The result of workshop model,筒体靠近厂房转折壁面处有一个明显的低速区； 厂房底部温度基本一致，各筒体温度相差不大。,The velocity of the cask near the turn side of the workshop is lower;The temperature of the cask is nearly the same.,速度场 Velocity field,温度
15、场 Temperature field,干式贮存容器 Dry cask storage system,厂房模型横截面分析结果 The result of workshop model,外界空气从下部通风口进入，沿着内、外筒体之间的空隙上升，从上部通风口流出； 空气被内筒体加热，温度逐渐升高。,The air flows from down to up along the gap between in an out cask; The air is heated by the MPC.,速度场 Velocity field,温度场 Temperature field,干式贮存容器 Dry cas
16、k storage system,外筒模型分析结果 The result of overpack model,燃料组件横截面 The Fuel Assembly section,下支撑进气孔截面 The bottom section,干式贮存容器 Dry cask storage system,内胆模型分析结果-速度场 The result of MPC model,整体视图 燃料组件区 45度纵截面图 不锈钢支撑结构 Whole Fuel assembly 45section SS body,干式贮存容器 Dry cask storage system,内胆模型分析结果-温度场 The re
17、sult of MPC model,贮存单元Storage cell,铅 lead,传热板Heat transfer plate,翅片 fin,支撑板 SS support plate,屏蔽树脂shielding material,减震器 the impact limiter,金属运输容器 Metal transport cask,乏燃料运输容器分析模型 The analysis model of spent fuel transport cask,整体容器模型 典型单元模型 total cask model cross section cask model,燃料/格架间隙 FA/rack c
18、ell gap,格架/内筒体间隙 Basket/inner body gap,铅/外筒体间隙 Lead/outer body gap,燃料组件 Fuel assembly,铝合金传热板 Aluminum plate,不锈钢支撑板 Support plate,金属运输容器 Metal transport cask,径向热导率 Radial heat conductivity coefficient,(315.6: 0.89 W/m-),NAC-STC: (315.6: 1.04 W/m-),金属运输容器 Metal transport cask,燃料组件等效热导率 Fuel assembly e
19、quivalent heat conductivity coefficient,计算结果 Model Calculation Result,沿特征线温度分布 The temperature distribution,温度场 The temperature field,金属运输容器 Metal transport cask,在NAC-STC报告中最高燃料温度为284.44，计算结果偏差量约0.7%。 max. FA temperature in the NAC-STC report is 284.44, the deviation is 0.7%.,火烧试验计算结果 The result of
20、fire test calculation,试验件表面温度变化 The cask surface temperature variation,火烧前后外表面情况对比 The cask outer surface (b./a. fire),火烧前 before fire,火烧后 after fire,金属运输容器 Metal transport cask,火烧后，中子屏蔽材料将会丧失，材料温度先快速上升，然后缓慢下降。 The neutron shield material will be lost after fire, the temperature rise first, then descend.,Contact page,Youxin ZHOU Thermal hydraulic engineer CNPRI Keji Building, 25 floor Guangdong, Shenzhen Phone: +86 88617582 Mobile: +86 18033075539 E-mail: ,,
