Structural assessment of intermediate printed circuit heat exchanger for sodium-cooled fast reactor with supercritical CO2 cycle

被引：81

作者：

Lee, Youho ^{[1
]}

Lee, Jeong Ik ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Nucl & Quantum Engn, Taejon 305701, South Korea

来源：

ANNALS OF NUCLEAR ENERGY | 2014年 / 73卷

基金：

新加坡国家研究基金会;

关键词：

Printed circuit heat exchanger; Structure; Sodium-cooled fast reactor; Supercritical carbon dioxide cycle; Stress; Heat exchanger; THERMAL-HYDRAULIC PERFORMANCE;

D O I：

10.1016/j.anucene.2014.06.022

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Structural integrity of intermediate Printed Circuit Heat Exchanger (PCHE) for Sodium-cooled Fast Reactor (SFR) attached to Supercritical CO2 (S-CO2) is investigated. ANSYS-Mechanical was used to simulate stress fields of representative PCHE channels, with temperature fields imported from FLUENT simulation. Mechanical stress induced by pressure loading is found to be the primary source of stress. As plasticity sufficiently lowers local stress concentration at PCHE channel tips, PCHE type intermediate heat exchangers made of SS316 are anticipated to reliably assure compliance with design standards prescribed in the ASME standards, thanks to the structure temperature that is below the effective creep inducing point. The actual life time of PCHE for SFR-SCO2 is likely to be affected by mechanical behavior change of SS316 with reactions with S-CO2 and fatigue. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：84 / 95

页数：12

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