期刊论文

Key factors affecting the thermal performance of annular fuel elements in LFR

Liu, Z.

中文

核技术

0253-3219

2021

44

10

89-96

10.11889/j.0253-3219.2021.hjs.44.100607

装备预研重点实验室基金(No.6142A07190106)、国家自然科学基金(No.12005097)、湖南省自然科学基金(No.2020JJ5465)资助 第一作者：王宇轩，男，2000年出生，现为硕士研究生，研究领域为核能科学与工程专业 通信作者：刘紫静，E-mail：liuzijing1 123 @163.com 收稿日期：2021-08-23，修回日期：2021-09-10 Supported by Key Laboratory Fund Project of Equipment Pre-research (No.6142A07190106), National Natural Science Foundation of China (No.12005097), Natural Science Foundation of Hunan Province (No.2020JJ5465) Firstauthor:W ANG Y uxuan ,male,bornin2000,masterstudent,focusingonnuclearscienceandengineering Corresponding author: LIU Zijing, E-mail: liuzijing1 123 @163.com Received date: 2021-08-23, revised date: 2021-09-10

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研究影响铅冷快堆环形燃料元件热工性能的关键因素,对提高铅冷快堆堆芯的功率密度具有重要意义。本文首先对典型铅冷快堆环形燃料元件建立热工模型并进行热阻分析,评估影响其热工性能的关键因素;然后,以内外流道冷却剂的出口温差、环形燃料元件芯块最高温度、绝热面位置以及内外包壳温差四项指标作为评判标准,分析各因素对环形燃料元件热工性能的影响特性。热阻分析结果显示:影响铅冷快堆环形燃料元件热工性能的关键因素为气隙宽度、包壳厚度和流量分配比。评判分析结果表明:增大流量分配比可以显著降低内外流道冷却剂的温差和环形燃料元件芯块最高温度;适当增加外气隙宽度,减小内气隙宽度,可以...

Background: The key factors affecting the thermal performance of the lead-cooled fast reactor (LFR) annular fuel are very important to improve the core power density of LFR. Purpose: This study aims to analyze those key factors and provide guidance for improving reactor core power density. Methods: Firstly, one quarter thermal analysis model of typical annular fuel element of lead cooled fast reactor was established, followed by the thermal resistance analysis of typical LFR annular fuel element to evaluate the key factors affecting its thermal...