Numerical Analysis of Conjugate Heat Transfer of Supercritical CO2 and Pb-Bi in Tube-in-Tube Channels

被引：2

作者：

Ali, Kashif ^{[1
]}

Qaisrani, Mumtaz A. ^{[2
]}

Rehman, Haseeb Ur ^{[1
,3
]}

Ali, Hafiz Muhammad ^{[4
,5
]}

Rehman, Zia Ur ^{[1
]}

Baluch, Mansoor A. ^{[6
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow, Xian 710049, Peoples R China

[2] Khawaja Fareed Univ Engn & Informat Technol, Dept Mech Engn, Rahim Yar Khan 64200, Pakistan

[3] Univ Engn & Technol, Dept Mech Engn, Taxila 47050, Pakistan

[4] King Fahd Univ Petr & Minerals, Mech Engn Dept, Dhahran 31261, Saudi Arabia

[5] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Renewable Energy & Powe, Dhahran 31261, Saudi Arabia

[6] Univ Engn & Technol, Civil Engn Dept, Taxila 47050, Pakistan

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2023年 / 46卷 / 03期

关键词：

Brayton cycle; Conjugate heat transfer; Lead-bismuth; Supercritical carbon dioxide; FLOW; LBE;

D O I：

10.1002/ceat.202200021

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This work presents a numerical analysis of conjugate heat transfer in an annular channel with turbulence models for supercritical CO2 (tube side) and Pb-Bi (annular side) as working fluids to understand the impact of flow constraints and heat transfer. By using the Navier-Stokes formulation and the energy equation clarifying concurrent flow buildup and conjugate heat transmittance in tubes, several turbulent Prandtl models were solved numerically. The turbulent Prandtl number Pr-t of Pb-Bi was used to refine the consistency of the arithmetical simulation. By comparing Pr-t, temperature fluctuation, and heat flux density, it was concluded that the existing Pr-t model should be used with caution in the numerical calculation of liquid metals having low Pr. The heat transfer and flow phenomena at different Pr-t values are significantly different.

引用

页码：466 / 473

页数：8

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