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Neutronics for fast spectrum, molten salt reactors and evolution over burnup

机译:用于快谱的中子学、熔盐反应堆和燃尽演化

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There are a wide variety of fast spectrum molten salt reactor (FSMSR) designs and corresponding fuel cycles that shown promise. These designs differ in features. Therefore, it becomes difficult to determine whether a set of parameters is applicable to all, one, or none of these designs. This paper presents a number of iterations of a FSMSR concept with a sodium chloride carrier salt. Different design characteristics and their effects on the neurotics parameters are shown. The results show that effective delayed neutron fraction, mean neutron generation time, neutron yield, and energy of neutrons causing a fission all follow trends based off the heavy metal concentration and leakage rate. This paper also gives preliminary fuel cycle calculations and the evolution of the neutronic parameters over burnup. A FSMSR initially fueled with low enriched uranium will naturally breed at a certain core volume, without a need for refueling, for decades of full power operation.
机译:有各种各样的快光谱熔盐反应堆 (FSMSR) 设计和相应的燃料循环显示出前景。这些设计在功能上有所不同。因此,很难确定一组参数是否适用于所有、一个或全部不适用于这些设计。本文介绍了使用氯化钠载体盐的FSMSR概念的多次迭代。显示了不同的设计特征及其对神经症参数的影响。结果表明:有效延迟中子分数、平均中子产生时间、中子产率和引起裂变的中子能量均遵循重金属浓度和泄漏率的变化趋势。本文还给出了初步的燃料循环计算和中子参数在燃尽过程中的演变。最初以低浓缩铀为燃料的FSMSR将在数十年的全功率运行中自然地以一定的核心体积繁殖,而无需加油。

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