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首页> 外文会议>International Congress on Advances in Nuclear Power Plants >EXPERIMENTAL SIMULATION OF STEAM LIFT PUMP AND STEAM GENERATION FOR PB-BI COOLED DIRECT CONTACT BOILING WATER FAST REACTOR
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EXPERIMENTAL SIMULATION OF STEAM LIFT PUMP AND STEAM GENERATION FOR PB-BI COOLED DIRECT CONTACT BOILING WATER FAST REACTOR

机译：PB-BI冷却直接接触沸水快速反应器的蒸汽提升泵和蒸汽发电实验模拟

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For the development of Pb-Bi(45wt(percent)Pb-55wt(percent)Bi)-cooled direct contact boiling watersmall fast reactor (PBWFR), Pb-Bi-water direct contact boiling two-phase flow loop has been fabricated and operated. The loop consists of a Pb-Bi flow loop (four heater pin bundle, a chimney, an upper plenum, a level meter tank, an air-water cooler, and an electromagnetic flow meter) and a water-steam flow loop (a pump, a preheater, an injection nozzle, chimneys, an upper plenum with mist separators and dryers, a condenser, a buffer tank, and an air-water cooler). At the rated operating condition, system pressure is 7 MPa. The sub-cooled water was injected into a Pb-Bi flow in the chimney. A power of the heater pin bundle was controlled to obtain the inlet and outlet temperatures of the heater bundle. The Pb-Bi and steam flows were simulated analytically using one-dimensional models of frictional and form losses and drag forces. The Pb-Bi-steam two-phase frictional pressure loss was calculated by means of the two-phase flow multiplication factor of Lockhart-Martinelli model. It was found that Pb-Bi temperature decreased quickly in the chimney due to high heat transfer rate of Pb-Bi-water direct contact boiling. The volumetric overall heat transfer coefficient was 60-310 kW/m~(3)K, and decreased with the superheat.
机译：对于PB-BI（45wt（百分比）Pb-55wt（百分比）Bi） - 冷却直接接触沸腾水域MALL快速反应器（PBWFR），PB-BI水直接接触沸腾两相流回路已经制造和操作。该环由PB-BI流回路（四个加热器销束，烟囱，上层，水平仪表罐，空水冷却器和电磁流量计）和水蒸汽流量回路（泵，预热器，注射喷嘴，烟囱，具有雾分离器和干燥器的上限，冷凝器，缓冲罐和空气 - 水冷却器）。在额定操作条件下，系统压力为7 MPa。将亚冷水注入烟囱中的PB-BI流中。控制加热器销束的功率以获得加热器束的入口和出口温度。使用一维模型的摩擦和形成损失和阻力，分析PB-BI和蒸汽流。通过锁骨 - Martinelli模型的两相流量乘法因子计算PB-Bi蒸汽两相摩擦压力损失。发现PB-BI温度由于PB-Bi水直接接触沸腾的高传热速率而在烟囱中迅速降低。体积总传热系数为60-310 kW / m〜（3）k，并用过热降低。

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