Experimental study of the flow and heat transfer performance of a PCHE with rhombic fin channels

Yang, Yu; Li, Hongzhi; Xie, Beibei; Zhang, Lei; Zhang, Yifan

doi:10.1016/j.enconman.2021.115137

Cited by 39 publications

(5 citation statements)

References 24 publications

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“…(1) The zigzag type with high heat transfer performance is the most economical channel type in the CO2 Brayton cycle, and (2) The airfoil type with a low pressure drop is superior in the N2 Brayton cycle. Yang et al [9] (Experimental study) Figures 7 and 8 show the rhombic fin geometry adopted in the experimental study. A Coriolis mass flowmeter was mounted upstream of the PCHE.…”

Section: Resultsmentioning

confidence: 99%

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Printed Circuit Heat Exchangers (PCHEs): A Brief Review

Shitsi

Debrah

Agbodemegbe

et al. 2023

Int. Res. J. multidiscip. Technovation

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Heat exchangers and other heat transfer devices/systems play vital roles of heat transfer in thermal fluid flow systems for industrial application. Sodium cooled fast reactors are normally designed to have two loops of sodium coolants and one loop of water coolant which generates steam for power production. The two loops of sodium coolants consist of primary cooling system of sodium which cools the fuel rods of the reactor core and secondary cooling system of sodium transferring heat from the sodium primary cooling system. The water-cooling system transfers heat from the secondary cooling system of sodium for steam generation. Lead cooled fast reactors on the other hand are designed to have primary cooling system of lead cooling the fuel rods in the reactor core and secondary cooling system of water transferring heat from the lead cooling primary system for steam generation. Water cooled Nuclear Power Plants used water to cool the reactor core in the primary system and the heat removed from the core is used for steam generation directly as in BWRs and SCWRs or in the secondary system of heat exchanger as in PWRs. Other reactor systems such as Gas-cooled fast reactor (GFR), Molten-salt reactor (MSR), High-temperature gas-cooled reactor (HTGR), and Small Modular Reactors (SMRs) also have various types of heat exchangers in their designs to support power/electricity generation. Appropriate heat exchangers are therefore needed for various stages of heat transfer in power generation systems. Thus, Heat exchangers and other heat transfer devices/systems play vital roles of heat transfer in thermal fluid flow systems for industrial applications. This study presents brief review of PCHEs which have comparable advantages over other types of heat exchangers. Recent studies on PCHEs and other heat exchanger types have been reviewed. Design and optimization of PCHEs, optimization of Brayton and Rankine circles, and fluid flow and heat transfer devices/systems have been discussed briefly. The review findings show that the design and optimization of PCHEs depends on the intended industrial application of the heat exchanger. The various channel types and channel cross-section types available for design and optimisation as well as the design and optimised system being able to withstand high pressure and temperature conditions in addition to its compact size for the intended industrial application make PCHEs unique among other types of heat exchangers.

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Section: Resultsmentioning

confidence: 99%

“…The heat capacity ratio, which is the ratio of minimum heat capacity rate to the maximum heat capacity rate, is defined by equation (9).…”

Section: 𝑊𝑝 = ∆𝑃 * 𝑉 [𝑀𝑊]mentioning

confidence: 99%

Printed Circuit Heat Exchangers (PCHEs): A Brief Review

Shitsi

Debrah

Agbodemegbe

et al. 2023

Int. Res. J. multidiscip. Technovation

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show abstract

“…In the present study, the NACA 0020 airfoil is employed in the simulations. The first two digits of NACA 0020 (00) represent the symmetry of the airfoil shape, whereas the last two digits (20) represent the percentage of the chord that is composed of the airfoil thickness. And the present PCHEs with and without airfoil overlap of the chord length discussed in this section refer to the corresponding configurations shown in Figure 2B 28 The mass flow rates are determined based on the Reynolds numbers considered in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…With the inclusion of zigzag, sinusoidal, airfoil, S‐shaped, rhombic and sinusoidal fin channel structures, as reported in Tsuzuki et al, 19 Xie et al, 7 Yang et al, 20 and Liu et al, 21 heat transfer enhancement is often accompanied by sufficient mixing, resulting from changes in fluid flow direction. However, flow diversion around bending points can result in a pressure drop.…”

Section: Introductionmentioning

confidence: 85%

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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“…The mechanical performance is the key factor to evaluate the reliability of PCHE, and the optimizations of the mechanical performance of PCHE have been performed based on the deformation analysis in the process of diffusion bonding under high-temperature conditions by former researchers (Yoon et al, 2017;Xu et al, 2022). The thermal-hydraulic performance under stable conditions is the basis of the PCHE design, and the related research studies cover the quantitative analysis of thermal-hydraulic characteristics of PCHEs with various structural parameters and the correlation development of thermal-hydraulic characteristics (Shin and No, 2017;Popov et al, 2019;Bohong Wang et al, 2021;Li and Yu, 2021;Jin et al, 2022;Yang et al, 2022;Zhou et al, 2022). The thermal-hydraulic FIGURE 1 | Structure of printed circuit heat exchangers (Heatric, 2008;Ma et al, 2015;Huang et al, 2019;Ma et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Technical Characteristics and Development Trend of Printed Circuit Heat Exchanger Applied in Floating Liquefied Natural Gas

Xie

Zhuang

et al. 2022

Front. Energy Res.

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The printed circuit heat exchanger with high efficiency and good compactness and reliability presents potential application in the floating liquefied natural gas platform. This paper offers a review on technical characteristics and development trend of the printed circuit heat exchanger applied in floating liquefied natural gas, including the development state of printed circuit heat exchangers, the application state of printed circuit heat exchangers in floating liquefied natural gas, and the key issues for potential application of printed circuit heat exchangers in floating liquefied natural gas. Firstly, the existing research results of heat transfer and pressure drop characteristics of printed circuit heat exchangers with various flow channels are analyzed, and the correlations of the heat transfer coefficients and the pressure drop of these flow channels are summarized. Then, the application state of printed circuit heat exchangers in floating liquefied natural gas is introduced, and the functions of printed circuit heat exchangers used in the existing floating liquefied natural gas facilities are analyzed. Finally, the key issues for applying printed circuit heat exchangers in floating liquefied natural gas, including the structure design criteria, influence mechanism of sloshing conditions on performance, and methods of suppressing the adverse effects of sloshing conditions, are proposed. It is indicated that the present studies focus on the effect of single sloshing motion on the thermal–hydraulic performances of printed circuit heat exchangers, but few attention has been paid onto the coupling effects of multiple sloshing motions which conform more closely to the actual operation conditions of printed circuit heat exchangers in floating liquefied natural gas. Thus, the future work should aim at the influence mechanisms and structure optimizations in terms of thermal–hydraulic performance under multiple sloshing conditions.

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Experimental study of the flow and heat transfer performance of a PCHE with rhombic fin channels

Cited by 39 publications

References 24 publications

Printed Circuit Heat Exchangers (PCHEs): A Brief Review

Printed Circuit Heat Exchangers (PCHEs): A Brief Review

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

Technical Characteristics and Development Trend of Printed Circuit Heat Exchanger Applied in Floating Liquefied Natural Gas

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