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首页> 外文会议>Proceedings of the international topical meeting on advanced reactors safety >Core and Plant Design of the Power Reactor Cooled and Moderated by Supercritical Light Water
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Core and Plant Design of the Power Reactor Cooled and Moderated by Supercritical Light Water

机译：超临界轻水冷却和调节的反应堆堆芯和设备设计

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A reactor cooled and moderated by supercritical light water with single tube water rods is designed. The plant system is a once-through direct cycle ; the whole coolant which once flows through the core is fed to the turbine. This reactor is much simpler than the current LWRs, which enhances the economy and safety. The average outlet coolant temperature should be evaluated considering the mixing of hot and cold coolant from the fuel assemblies. To evaluate this, thermal hydraulic analysis of the whole core is carried out with considering the effect of coolant density feedback to the radial power distribution. The flow rate in the outer region is reduced by the orifice to maximize the outlet coolant temperature. The average outlet temperature is 397C, which is only 12C lower than that of the hottest channel since the density feedback flattens radial power distribution. Axial and local peaking factors are also evaluated. A steam cycle including reheaters, turbines and feedwater heaters is designed for estimating the thermal efficiency. The reactor with orifices has thermal efficiency 40.7% and electric power 1013MW. The electric power can be larger in the core without orifices and channel boxes, since the channel boxes can be replaced with additional fuel rods. The decrease in avearge outlet coolant temperature is only 3C, compared with the cores with the orifices.
机译：设计了一种采用单管水棒的超临界轻水冷却和缓和的反应堆。工厂系统是一次直接循环。曾经流过堆芯的所有冷却剂都被送入涡轮。该反应堆比现有的轻水堆要简单得多，从而提高了经济性和安全性。应考虑混合燃料组件的冷热混合液，评估出口冷却液的平均温度。为了对此进行评估，在考虑冷却剂密度反馈对径向功率分布的影响的情况下，对整个堆芯进行了热力水力分析。孔口减少了外部区域中的流速，以使出口冷却液温度最大化。平均出口温度为397°C，仅比最热通道低12°C，因为密度反馈使径向功率分布趋于平坦。还评估了轴向和局部峰值因子。设计一个包括再热器，涡轮机和给水加热器的蒸汽循环来估算热效率。带孔反应器的热效率为40.7％，电功率为1013MW。在没有孔和通道箱的情况下，铁芯中的电功率会更大，因为通道箱可以用附加的燃料棒代替。与带有节流孔的芯相比，平均出口冷却液温度降低仅3C。

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