
1. 东北电力大学能源与动力工程学院
2. 东北电力大学化学工程学院
Published:2025
移动端阅览
[J]. 2025, (14): 5402-5413.
U型弯管是换热器常用换热通道形式之一,但超临界二氧化碳(supercritical CO
2
S-CO
2
)在U型管内的流动换热特性及机制尚未得到充分研究。该文采用数值方法重点探究S-CO
2
在垂直倒U型弯管内流动换热特性及规律。基于S-CO
2
跨越类临界温度发生类气-类液转换假设,阐述U型管内S-CO
2
跨类临界传热行为的机理,讨论S-CO
2
在U型管与垂直圆管内产生传热差异的原因。结果表明,相对于垂直圆管,U型管段具有强化S-CO
2
传热的效应,但其壁温沿周向呈不均匀分布。此外,U型弯管段横截面内类液相受离心力作用偏离中心区域并迁移至弯管顶部,类气相则汇聚于底部,且流动参数与垂直圆管呈现显著差异,以上因素共同决定了U型管内S-CO
2
换热特性及壁温分布特点。该文结果对采用U型换热管的S-CO
2
换热器设计具有一定的指导意义。
高超,段立强,高统彤,张伟骏,蔡强.集成塔式太阳能的新型超临界压缩二氧化碳储能系统性能分析[J].中国电机工程学报,2024(10).
程亮元,王清洋,王庆华,徐进良.基于类沸腾理论的超临界CO_2水平管内强制对流传热特性[J].中国电机工程学报,2023(17).
陈璟,陈磊,周敬,朱萌,廖海燕,刘辉,许凯,向军.1000MW超临界二氧化碳动力循环燃煤发电机组变工况特性研究[J].中国电机工程学报,2023(17).
许婉婷,许波,王鑫,陈振乾.方形微通道内超临界CO_2流动换热特性研究[J].化工学报,2022(04).
李乐璇,徐玉杰,尹钊,郭欢,张显荣,陈海生,周学志.超临界二氧化碳储能系统(火用)损特性分析[J].储能科学与技术,2021(05).
王彦红,陆英楠,李素芬,东明.U形圆管中超临界压力RP-3航空煤油换热数值研究[J].化工学报,2021(09).
闫晨帅,徐进良.超临界压力CO_2在水平圆管内流动传热数值分析[J].物理学报,2020(04).
闫晨帅,朱兵国,张海松,朱鑫杰,徐进良,刘欢.超临界压力CO_2在倾斜光管内换热特性数值分析[J].中国电机工程学报,2020(02).
朱兵国,吴新明,张良,孙恩慧,张海松,徐进良.垂直上升管内超临界CO_2流动传热特性研究[J].化工学报,2019(04).
刘新新,叶建,徐肖肖,刘朝,王开正,李洪瑞,白万金.超临界CO_2在水平螺旋管内的冷却换热特性[J].化工学报,2016(S2).
He Xiaotian,Xu Jinliang,Yu Xiongjiang,Xie Jian.Distinguishing evaporation-like and boiling-like modes of pseudo-boiling in supercritical pressures[J].International Journal of Heat and Mass Transfer,2023.
Zhou Xing,Yuan Sixu,Li Zhouhang.Experimental study of buoyancy and centrifugal effects on supercritical heat transfer in U-bend and contiguous straight tubes[J].International Journal of Heat and Mass Transfer,2023.
Yuan Sixu,Zhou Xing,Wang Hua,Li Zhouhang.Experimental investigation of heat transfer to supercritical pressure R410a in a U-tube[J].Applied Thermal Engineering,2023.
Xu Yong,Yi Zhengming.Effect of flow direction on heat transfer characteristics of supercritical CO2 in a heating serpentine micro-tube[J].Energy,2023.
Huang Yu,Duan Lunbo,Liu Daoyin,Wang Yueming.Computational investigation on heat transfer of supercritical CO2 in horizontal U-tubes[J].The Journal of Supercritical Fluids,2022.
You Tianxia,Pan Yue,Zhai Yuling,Wang Hua,Li Zhouhang.Heat transfer in a U-bend pipe flow at supercritical pressure[J].International Journal of Heat and Mass Transfer,2022.
Ming Yang,Liu Kai,Zhao Fulong,Fang Huawei,Tan Sichao,Tian Ruifeng.Dynamic modeling and validation of the 5 MW small modular supercritical CO2 Brayton-Cycle reactor system[J].Energy Conversion and Management,2022.
Eduardo Ruiz-Casanova,Carlos Rubio-Maya,J. Jesús Pacheco-Ibarra,Víctor M. Ambriz-Díaz,Carlos E. Romero,Xingchao Wang.Thermodynamic analysis and optimization of supercritical carbon dioxide Brayton cycles for use with low-grade geothermal heat sources[J].Energy Conversion and Management,2020.
José I. Linares,María J. Montes,Alexis Cantizano,Consuelo Sánchez.A novel supercritical CO 2 recompression Brayton power cycle for power tower concentrating solar plants[J].Applied Energy,2020.
Department of Thermal Engineering, Tsinghua University, Beijing 100084, China,Department of Thermal Engineering, Tsinghua University, Beijing 100084, China,Department of Thermal Engineering, Tsinghua University, Beijing 100084, China,Department of Thermal Engineering, Tsinghua University, Beijing 100084, China.Instability during transition to turbulence of supercritical pressure CO 2 in a vertical heated serpentine tube[J].International Journal of Thermal Sciences,2019.
Bingguo Zhu,Jinliang Xu,Xinming Wu,Jian Xie,Mingjia Li.Supercritical “boiling” number, a new parameter to distinguish two regimes of carbon dioxide heat transfer in tubes[J].International Journal of Thermal Sciences,2019.
School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China,School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China,Department of Mechanical Engineering and Material Science, University of Pittsburgh, Pittsburgh, PA 15261, USA,Department of Mechanical Engineering and Material Science, University of Pittsburgh, Pittsburgh, PA 15261, USA.Numerical investigation of heat transfer and flow characteristics of supercritical CO 2 in U-duct[J].Applied Thermal Engineering,2018.
Queensland Geothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,Queensland Geothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,Queensland Geothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,Queensland Geothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,Queensland Geothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,Center for Hypersonics, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,Center for Hypersonics, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia,School of Energy and Power Engineering, Wuhan University of Technology, Wuhan, Hubei 430063, People’s Republic of China.Computational investigations of heat transfer to supercritical CO 2 in a large horizontal tube[J].Energy Conversion and Management,2018.
Zhouhang Li,Yuling Zhai,Kongzhai Li,Hua Wang,Junfu Lu.A quantitative study on the interaction between curvature and buoyancy effects in helically coiled heat exchangers of supercritical CO 2 Rankine cycles[J].Energy,2016.
Gabriela Huminic,Angel Huminic.Heat transfer and flow characteristics of conventional fluids and nanofluids in curved tubes: A review[J].Renewable and Sustainable Energy Reviews,2016.
0
Views
151
下载量
0
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
京公网安备11010802024621