Flow and Heat Transfer Characteristic Study of Supercritical CO2 in Printed Circuit Heat Exchanger

被引：0

作者：

Xu Z. ^{[1
]}

Zhang M. ^{[1
]}

Duan T. ^{[1
]}

Fu W. ^{[1
]}

Li Q. ^{[1
]}

Li P. ^{[1
]}

机构：

[1] Luoyang Ship Material Research Institute, Luoyang

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2021年 / 55卷 / 05期

关键词：

Flow and heat transfer characteristic; Numerical simulation; Printed circuit heat exchanger; Pseudo-critical temperature; SCO[!sub]2[!/sub;

D O I：

10.7538/yzk.2020.youxian.0411

中图分类号：

学科分类号：

摘要：

Printed circuit heat exchanger (PCHE) is a micro-channel heat exchanger with the benefit of high efficiency, and can endure high temperature and pressure. Based on these benefits, PCHE are widely used in marine engineering, nuclear engineering and solar thermal system. The flow and heat transfer characteristic of supercritical CO2 (SCO2) near pseudo-critical point in PCHE was numerically studied in this paper. The results show that the temperature distribution is the flattest when the SCO2 fluid temperature reaches pseudo-critical temperature, because the effective thermal conductivity of the fluid is the largest. The convection thermal resistance of SCO2 is the largest of the total resistance, and then is the conductive resistance, the smallest is the convection thermal resistance of water. The conductive resistance calculated by equivalent thickness method is larger than simulation.With the increase of Reynolds number, the enhancement of heat transfer near pseudo-critical point is enhanced. © 2021, Editorial Board of Atomic Energy Science and Technology. All right reserved.

引用

页码：849 / 855

页数：6

共 21 条

[1] LI H Z, KRUIZENGA A, ANDERSON M, Et al., Development of a new forced convection heat transfer correlation for CO2 in both heating and cooling modes at supercritical pressures, International Journal of Thermal Sciences, 50, 12, pp. 2430-2442, (2011)
[2] KIM S G, LEE Y, AHN Y, Et al., CFD aided approach to design printed circuit heat exchangers for supercritical CO2 Brayton cycle application, Annals of Nuclear Energy, 92, pp. 175-185, (2016)
[3] LIANG Dunhuang, ZHANG Yaoli, GUO Qi-xun, Et al., Modeling and analysis of nuclear reactor system using supercritical-CO2 Brayton cycle, Journal of Xiamen University: Natural Science, 54, 5, pp. 608-613, (2015)
[4] LI Dengwei, XIAO Yao, GU Hanyang, Transient-state safety analysis of supercritical CO2-cooled micro-modular reactor, Atomic Energy Science and Technology, 53, 8, pp. 1439-1444, (2019)
[5] HINZE J F, NELLIS G F, ANDERSON M H., Cost comparison of printed circuit heat exchanger to low cost periodic flow regenerator for use as recuperator in a S-CO2 Brayton cycle, Applied Energy, 208, 15, pp. 1150-1161, (2017)
[6] HESSELGREAVES J E., Compact heat exchangers: Selection, design and operation, pp. 35-38, (2016)
[7] MCCORMACK D., The application of printed circuit heat exchanger technology in the pebble bed modular reactor demonstration plant, ASME Turbo Expo 2001: Power for Land, Sea, and Air, (2001)
[8] CLARK D, MIZIA R, GLAZOFF M V, Et al., Diffusion welding of compact heat exchangers for nuclear applications, (2012)
[9] KIM I H, NO H C., Physical model development and optimal design of PCHE for intermediate heat exchangers in HTGRs, Nuclear Engineering and Design, 243, pp. 243-250, (2012)
[10] IVERSON B D, CONBOY T M, PASCH J J, Et al., Supercritical CO2 Brayton cycles for solar-thermal energy, Applied Energy, 111, 4, pp. 957-970, (2013)

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