期刊论文

Liu, Z.

中文

核技术

0253-3219

2022

45

3

75-82

10.11889/j.0253-3219.2022.hjs.45.030601

国家自然科学基金(No.12005097)、国家级大学生创新与实验研究计划(No.S202010555037)资助 第一作者：余清远，男，2000年出生，现为南华大学本科生 ，研究领域为快堆热工水力 、热管冷却反应堆 通信作者：刘紫静，E-mail ：liuzijing 1123 @163.com 收稿日期：2021-10-28，修回日期：2021-12-1 1 Supported by National Natural Science Foundation of China (No.12005097), National Innovation and Experimental Research Program for College Students (No.S202010555037) Firstauthor:YUQingyuan,male,bornin2000,undergraduatestudent,focusingonfastreactorthermalhydraulicandheatpipecoolingreactor Corresponding author: LIU Zijing, E-mail: liuzijing1 123 @163.com Received date: 2021-10-28, revised date: 2021-12-1 1

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以小型化、长寿命、自然循环为铅基快堆的设计目标，构建100 MWt铅基快堆堆芯模型并开展冷却剂选型研究，选取Pb同位素/混合物及Pb-Bi混合物，分析比较了采用不同冷却剂堆芯的物理特性与自然循环特性。结果表明：得益于208Pb在高能区小的非弹性散射截面与中低能区极小的中子俘获截面，加之Bi较小的中子俘获截面，采用208Pb-Bi冷却的铅基快堆堆芯在30满功率年运行周期内的燃耗反应性损失最小，增殖性能最佳，且具备负值较大的空泡系数、冷却剂温度系数和较大的有效缓发中子份额，可装载较低富集度或较少量燃料，有利于堆芯小型化、长寿命和固有安全性；208Pb-Bi相比Pb冷却的铅基快堆具备更强的自...

Background: Small long life natural circulation lead-based fast reactor has broad development prospects in the fields such as marine nuclear power, portable power, thermal-electric co-generation in remote areas, seawater desalination, et al., and is one of the important development directions of lead-based fast reactor. Purpose: This study aims at the coolant selection for the design goals of long life, miniaturization and natural circulation of lead-based fast reactors. Methods: First of all, refer to the ALFRED design scheme of EU small lead ...