Burnup Calculations and Fuel Cycle Economics Analysis of Fusion-Fission Hybrid Reactor
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摘要: 基于轻水冷却的压力管式混合堆,采用压水堆卸载的乏燃料以及天然铀氧化物陶瓷燃料,建立混合堆包层的换料方案,详细计算了包层中子学性能随燃耗的变化情况,计算结果表明,包层在维持3000 MW热功率输出的同时,可以保证氚自持(氚增殖比TBR>1.20),而每5 a仅需向包层添加80 t左右的重金属燃料。基于建立的平衡循环计算了包层采用不同燃料时的单位发电燃料成本。结果表明,采用乏燃料和天然铀时的单位发电燃料成本分别为1.82×10-3、1.35×10-3$/(k W·h)。Abstract: Based on the light water cooled pressure tube blanket, the refueling strategies have been established using the spent nuclear fuel discharged from pressurized water reactor and natural uranium oxide, and detailed burnup calculations have been carried out. The numerical results show that only about 80 tonnes of spent nuclear fuel or natural uranium are needed every 1500 EFPD（Equivalent Full Power Day） with a 3000 MWth output and tritium self-sufficiency（TBR＞1.20）. Based on the equilibrium fuel cycle, the fuel costs of electricity of the blanket using different fuel are calculated, and the results are 1.82×10-3$/（k W·h） for the case of spent nuclear fuel, and 1.35×10-3$/（k W·h） for the case of using natural uranium, respectively.
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