哈尔滨工程大学学报2023，Vol.44Issue(12)：2103-2111,9.DOI:10.11990/jheu.202309022
直通道PCHE内S-CO2与铅铋合金耦合换热特性数值分析
A numerical analysis of the S-CO2 coupled with lead-bismuth eutectic heat transfer characteristics in straight channel PCHE
摘要
Abstract
The mechanism of heat transfer between supercritical carbon dioxide(S-CO2)and liquid lead-bismuth alloy(LBE)coupled in a printed circuit heat exchanger(PCHE)is complex,and little research has been conduc-ted on this topic.Therefore,this paper develops a three-dimensional model of a"1 correspond 2"type straight channel PCHE heat transfer unit.A numerical simulation method is used to investigate the coupled heat transfer characteristics of S-CO2 and LBE.The results show that the S-CO2 convective heat transfer thermal resistance on the cold side is greater than the LBE thermal resistance on the hot side.This means that the overall heat transfer characteristics of PCHE are mainly enslaved to the effect of S-CO2,and the heat transfer strength of the S-CO2 side determines the lower limit of the overall heat transfer characteristics.Additionally,varying the inlet mass flow rate on the S-CO2 side has a greater effect on the power of the PCHE heat exchanger unit than varying the inlet mass flow rate on the LBE side.For each 1 kg/s increase in the S-CO2 inlet mass flow rate,the heat transfer power in-creases by 335.77 kW.These results provide a reference for subsequent studies on coupled heat transfer between LBE and S-CO2 and the design of PCHEs.关键词
超临界CO2/铅铋合金/印刷电路板/换热器/直通道/耦合换热特性/超临界流体/数值分析Key words
supercritical carbon dioxide(S-CO2)/lead-bismuth eutectic/printed circuit board/heat exchanger/straight channel/coupled heat transfer characteristics/supercritical fluid/numerical analysis分类
数理科学引用本文复制引用
刘凯,彭军,赵富龙,董显敏,田瑞峰,谭思超..直通道PCHE内S-CO2与铅铋合金耦合换热特性数值分析[J].哈尔滨工程大学学报,2023,44(12):2103-2111,9.基金项目
国家级青年人才项目(2021QNRC001) （2021QNRC001）
国家自然科学基金项目(U22B2093). （U22B2093）
