Numerical Study of the Transient Cooling Heat Transfer Performance of Supercritical CO2

被引：0

作者：

Li X. ^{[1
]}

Zhou J. ^{[1
]}

Xu X. ^{[1
]}

Liu C. ^{[1
]}

Luo Z. ^{[2
]}

Xue X. ^{[2
]}

Wang R. ^{[2
]}

机构：

[1] Key Laboratory of Low-Grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Shapingba District, Chongqing

[2] Power China Chongqing Engineering Corporation Limited, Nanan District, Chongqing

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CFD; supercritical carbon dioxide; transient heat transfer;

D O I：

10.13334/j.0258-8013.pcsee.222158

中图分类号：

学科分类号：

摘要：

In this paper, the transient cooling heat transfer performance of supercritical CO2 is simulated using the one-dimensional and three-dimensional models. The transient heat transfer performances predicted by the two models are compared and the buoyancy effect is discussed. The results show that the response periods predicted by the 1-D model have a large deviation from that predicted by the 3-D model; the difference between the two models is enlarged when the fluid temperature is closed to the critical temperature; and the tube diameter is large. The buoyancy effect is considered to be one of the main reasons for the difference. The Richardson number is used to quantify the buoyancy effect. It is found that the difference between the response periods predicted by the 1-D model and the 3-D model is significant if the Richardson number is larger than 0.1. ©2023 Chin.Soc.for Elec.Eng.

引用

页码：4127 / 4137

页数：10

共 27 条

[1] XU Ruina, Feng LUO, JIANG Peixue, Buoyancy effects on turbulent heat transfer of supercritical CO2 in a vertical mini-tube based on continuous wall temperature measurements[J], International Journal of Heat and Mass Transfer, 110, pp. 576-586, (2017)
[2] WANG Shuxiang, ZHANG Wei, NIU Zhiyuan, Mixed convective heat transfer to supercritical carbon dioxide in helically coiled tube[J], CIESC Journal, 64, 11, pp. 3917-3926, (2013)
[3] WANG Zhenchuan, XU Ruina, XIONG Chao, Experimental study on the inhibition of heat transfer deterioration of supercritical pressure CO2[J], Journal of Tsinghua University：Science and Technology, 58, 12, pp. 1101-1106, (2018)
[4] MILANI D, LUU M T, NELSON S, Analysis for a solar stripper design for carbon capture under transient conditions[J], International Journal of Heat and Mass Transfer, 166, (2021)
[5] SUN Jia, Characteristic simulation and control of supercritical carbon dioxide cycle power generation system, (2018)
[6] YE Kai, CUI Dawei, ZHANG Yaoli, Analysis of natural cycle characteristics of supercritical carbon dioxide in rectangular loop[J], Nuclear Power Engineering, 41, S1, pp. 101-105, (2020)
[7] DOSTAL V，, HEJZLAR P, DRISCOLL M J．, The supercritical carbon dioxide power cycle：comparison to other advanced power cycles[J], Nuclear Technology, 154, 3, pp. 283-301, (2006)
[8] KIM T H, KWON J G, KIM M H, Experimental investigation on validity of buoyancy parameters to heat transfer of CO2 at supercritical pressures in a horizontal tube[J], Experimental Thermal and Fluid Science, 92, pp. 222-230, (2018)
[9] Hemin HU, Chaohong GUO, CAI Haofei, Dynamic characteristics of the recuperator thermal performance in a S–CO2 Brayton cycle[J], Energy, 214, (2021)
[10] ZHANG Yifan, LI Hongzhi, YANG Yu, Research on flow instability of supercritical supercritical carbon dioxide in a vertical upward heated tube[J], Thermal Power Generation, 49, 10, pp. 65-72, (2020)

← 1 2 3 →