Investigation on heat transfer characteristics of Pb–Bi/S–CO2 PCHE with different channel structures

Wang, Sipeng; Lu, Ziteng; Zhang, Qindong; Du, Peijun; Yang, Baohui; Zhuang, Kun; Tang, Xiaobin

doi:10.1016/j.pnucene.2023.104721

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…On the other hand, incorporating rounded corners in the steering parts of the zigzag flow channels leads to a decrease in both eddy currents and stress phenomena. 34 In the present study, the absence of sharp convex corners near the low-lying areas of the overlapping airfoils results in the reduced stress, and low-speed eddy currents are shown in Figure 3. The two essential features are generally believed to make equipment operation less susceptible to damage, thereby ensuring safety.…”

Section: Physical and Mathematical Model Descriptions And Optimizationsupporting

confidence: 47%

“…Wang et al 34 noted that Tsuzuki et al 19 reported the generation of local eddy currents and a significant increase in stress due to fluid flow in zigzag flow channels, which could potentially jeopardize equipment safety. On the other hand, incorporating rounded corners in the steering parts of the zigzag flow channels leads to a decrease in both eddy currents and stress phenomena.…”

Section: Physical and Mathematical Model Descriptions And Optimizationmentioning

confidence: 99%

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Numerical thermal–hydraulic analysis and multiobjective design optimization of a printed circuit heat exchanger with airfoil overlap fin channels

Kuo

Xie

Chueh

2023

Engineering Reports

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In this study, we numerically investigated the performance of a printed circuit heat exchanger (PCHE) featuring National Advisory Committee for Aeronautics (NACA) 0020 airfoil overlap fins integrated into its straight flow channels. Numerical simulations were performed by solving Navier–Stokes and energy equations to analyze liquid water at temperatures ranging from 30 to 90°C, which is possible for use with a geothermal heating system, for example. The optimization of the PCHE airfoil fin geometry is performed using nondominated sorting genetic algorithm II (NSGA‐II) with three design features: front, back, and overlap lengths. The effectiveness and pressure drop of the PCHE are evaluated as two objective functions. The present study shows that, when a Reynolds number falls between 1088 and 5000, the overlapping airfoils exhibit lower pressure drops and higher convective heat flux relative to the separate airfoils, and an increase in overlap length always decreases the pressure drop positively. It is also found that using overlapping airfoils of front length of 0.1 mm, back length of 0.119 mm, and overlap length of 0.203 mm leads to almost the same effectiveness and a 22% decrease in pressure drop (which is generally believed to preferably maintain the high heat transfer performance and minimize pressure drop, as a favorable design), compared to a base design of the airfoils with front and back lengths of 0.2 mm and an overlap length of 0.1 mm.

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Section: Physical and Mathematical Model Descriptions And Optimizationsupporting

confidence: 47%

Section: Physical and Mathematical Model Descriptions And Optimizationmentioning

confidence: 99%

Numerical thermal–hydraulic analysis and multiobjective design optimization of a printed circuit heat exchanger with airfoil overlap fin channels

Kuo

Xie

Chueh

2023

Engineering Reports

View full text Add to dashboard Cite

show abstract

Numerical study on the heat transfer characteristics of a microchannel heat exchanger with liquid lead–bismuth eutectic and supercritical CO2 as working fluids

Liu

Zhang

et al. 2023

Annals of Nuclear Energy

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Numerical investigation on flow and heat transfer characteristics of a PCHE with liquid lead–bismuth eutectic and sCO2 as working fluids

Liu,

Zhang,

Yang

et al. 2024

Annals of Nuclear Energy

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Investigation on heat transfer characteristics of Pb–Bi/S–CO2 PCHE with different channel structures

Cited by 8 publications

References 7 publications

Numerical thermal–hydraulic analysis and multiobjective design optimization of a printed circuit heat exchanger with airfoil overlap fin channels

Numerical thermal–hydraulic analysis and multiobjective design optimization of a printed circuit heat exchanger with airfoil overlap fin channels

Numerical study on the heat transfer characteristics of a microchannel heat exchanger with liquid lead–bismuth eutectic and supercritical CO2 as working fluids

Numerical investigation on flow and heat transfer characteristics of a PCHE with liquid lead–bismuth eutectic and sCO2 as working fluids

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