Abstract The temperature distribution of an electromagnetic pump was analyzed with a flow rate of 1380 L/min and a pressure of 4 bar designed for the sodium thermo-hydraulic test in the Sodium Test Loop for Safety Simulation and Assessment-Phase 1 (STELLA-1). The electromagnetic pump was used for the circulation of the liquid sodium coolant in the Intermediate Heat Transport System (IHTS) of the Prototype Gen-IV Sodium-cooled Fast Reactor (PGSFR) with an electric power of 150 MWe. The temperature distribution of the components of the electromagnetic pump was numerically analyzed to prevent functional degradation in the high temperature environment during pump operation. The heat transfer was numerically calculated using ANSYS Fluent for prediction of the temperature distribution in the excited coils, the electromagnet core, and the liquid sodium flow channel of the electromagnetic pump. The temperature distribution of operating electromagnetic pump was compared with cooling of natural and forced air circulation. The temperature in the coil, the core and the flow gap in the two conditions, natural circulation and forced circulation, were compared. The electromagnetic pump with cooling of forced circulation had better efficiency than natural circulation even considering consumption of the input power for the air blower. Accordingly, this study judged that forced cooling is good for both maintenance and efficiency of the electromagnetic pump.

中文翻译：

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GenIV PGSFR钠热液压测试回路电磁泵温度分布的数值分析

摘要 分析了电磁泵的温度分布，流量为 1380 L/min，压力为 4 bar，用于安全模拟和评估的钠测试回路中的钠热液压测试（STELLA-1）。 ）。电磁泵用于电力为 150 MWe 的原型 Gen-IV 钠冷快堆 (PGSFR) 的中间传热系统 (IHTS) 中液态钠冷却剂的循环。对电磁泵各部件的温度分布进行了数值分析，以防止泵运行过程中高温环境下的功能退化。使用 ANSYS Fluent 对传热进行数值计算，以预测励磁线圈、电磁铁芯、以及电磁泵的液钠流道。将运行中的电磁泵的温度分布与自然循环和强制空气循环冷却进行了比较。比较了自然循环和强制循环两种情况下线圈、铁心和流动间隙的温度。即使考虑到风机输入功率的消耗，强制循环冷却的电磁泵也比自然循环具有更好的效率。因此，本研究判断强制冷却有利于电磁泵的维护和效率。比较了自然循环和强制循环两种情况下的核心和流动间隙。即使考虑到风机输入功率的消耗，强制循环冷却的电磁泵也比自然循环具有更好的效率。因此，本研究判断强制冷却有利于电磁泵的维护和效率。比较了自然循环和强制循环两种情况下的核心和流动间隙。即使考虑到风机输入功率的消耗，强制循环冷却的电磁泵也比自然循环具有更好的效率。因此，本研究判断强制冷却有利于电磁泵的维护和效率。