基于翅片效率的PCHE流道布置方式优化研究  

Improved Flow Passage Arrangement in Printed Circuit Heat Exchanger for Innovative Energy Applications:Considerations on Fin Efficiency Enhancement

作　　者：刘生晖 于筱 黄彦平[2] 陈翔宇 张晓颖 宫厚军[2] 崔风鹏 Liu Shenghui;Yu Xiao;Huang Yanping;Chen Xiangyu;Zhang Xiaoying;Gong Houjun;Cui Fengpeng(Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing,210096,China;CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]东南大学能源与环境学院能源热转换及其过程测控教育部重点实验室,南京210096 [2]中国核动力研究设计院中核核反应堆热工水力技术重点实验室,成都610213

出　　处：《核动力工程》2021年第S01期1-4,共4页Nuclear Power Engineering

基　　金：国家自然科学基金项目(U1867218、11705188)。

摘　　要：对印刷电路板式换热器(PCHE)流道布置方式进行优化,可进一步提高其体积紧凑度和功率密度。本研究根据PCHE具有类翅片结构特征,将传统板式布置方式改进为胞元结构布置方式,通过增加冷热流体温度场协同性来进一步提升PCHE的换热性能;并利用数值模拟方法分别对传统板式布置方式和胞元结构布置方式的PCHE作为超临界二氧化碳布雷顿循环中的冷却器和钠冷快堆余热排出系统中的直接热交换器的热工水力性能进行对比研究。研究结果表明,相同工况下胞元结构布置方式的PCHE换热功率可以提高10%左右;工质流速越大,换热器功率提高幅度越大。The compactness and power density of the printed circuit heat exchanger(PCHE)can be further improved by optimizing the flow passage arrangement.In this study,a cellular type PCHE with improved flow passage arrangement compared with the traditional PCHE was proposed considering the fin efficiency enhancement.The new cellular type PCHE coupled with Supercritical CO2(SCO2)Brayton cycle and sodium-cooled fast reactor was also investigated numerically,and its thermal-hydraulic performance was compared with the traditional PCHE.Result shows that the heat load of the improved cellular type is always higher than the traditional one,about 10%at the ordinary operating conditions,with almost equal pressure drop.As a result,the fixed investment/operation cost of heat exchanger can be decreased.

关 键 词：印刷电路板式换热器(PCHE) 翅片效率 胞元结构 超临界二氧化碳 钠冷快堆 

分 类 号：TN41[电子电信—微电子学与固体电子学] TL334[核科学技术—核技术及应用]