Thermionic in-core heat pipe design and performance
Thermionic in-core heat pipe design and performance
复制标题
热电子核心热管设计和性能
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Hagelston
中科院分区：
文献类型：
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作者：
W. Determan;G. Hagelston
热管冷却热离子反应堆(HPTi)依靠堆芯内的钠热管来提供冗余的冷却手段，以冷却组成40kWE堆芯组件的72个热离子燃料元件(TFE)和36个驱动器燃料针。堆芯热管冷却被选为反应堆设计，以满足系统设计的要求，该系统设计具有针对自然和人为威胁的高生存水平，并且具有无任务结束单点故障的能力。进行了一项详细的研究，以确定潜在的堆芯热管几何形状，这可以为HPTI概念开发。对两种堆芯热管几何形状进行了要求和性能评估。使用堆芯的二维热模型评估了额定和故障运行条件，以评估TFE和驱动器燃料针的温度分布。采用HPTI蜂窝芯体结构，选择蝴蝶结芯内热管几何形状作为优化设计。
The heat pipe cooled thermionic reactor (HPTI) relies on in‐core sodium heat pipes to provide a redundant means of cooling the 72 thermionic fuel elements (TFEs) and 36 driver fuel pins which comprise the 40 kWe core assembly. In‐core heat pipe cooling was selected for the reactor design to meet the requirements for a system design with the potential to achieve a high survivability level against natural and man‐made threats and one that possesses no‐mission ending single point failures. A detailed study was performed to determine the potential in‐core heat pipe geometries which could be developed for an HPTI concept. Requirements and performance estimates were developed for two in‐core heat pipe geometries. Both nominal and faulted operating conditions were evaluated using a two‐dimensional thermal model of the core to assess TFE and driver fuel pin temperature profiles. A bow tie in‐core heat pipe geometry was selected as the optimum design using a HPTI honeycomb core structure.