Parametric Study on Thermo-Hydraulic Performance of NACA Airfoil Fin PCHEs Channels

Wang, Wei; Ding, Liang; Han, Fangming; Shuai, Yong; Li, Bingxi; Sundén, Bengt

doi:10.3390/en15145095

Cited by 9 publications

(3 citation statements)

References 28 publications

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“…Airfoil thickness plays a role in improving the crossflow heat exchanger compactness. Increasing XX from 20 to 30 contributed to enhancing the heat transfer at the leading edge because the increase of the frontal areas leads to a jet flow effect [14]. However, a slight fall was observed with further increase to 40 as large thickness causes high-intensity reverse flow at the trailing edge.…”

Section: Effects Of Airfoil Tube Geometrymentioning

confidence: 98%

Performance of a Metal Foam Coated Airfoil Tube Cross-Flow Heat Exchanger

Alsereidi,

Qiangshun,

Alseiari

et al. 2023

International Conference on Fluid Flow and Thermal Science

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This study presents a numerical study of the heat transfer and pressure drop characteristics of airfoil tube with porous metal foam in crossflow. A unified modelling approach is used to model the flow and heat transfer in the simulation domain. The model is first verified and validated against circular tube forced convection problem with known empirical relation. Then, the effects of airfoil shape parameters and metal foam properties are studied. Among these, airfoil thickness is the most significant parameter, and the performance index increases as foam thickness and permeability increase, while it decreases with the increase of porosity.

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Section: Effects Of Airfoil Tube Geometrymentioning

confidence: 98%

Performance of a Metal Foam Coated Airfoil Tube Cross-Flow Heat Exchanger

Alsereidi,

Qiangshun,

Alseiari

et al. 2023

International Conference on Fluid Flow and Thermal Science

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“…Theoretical analysis [13], experimental tests [14,15], numerical simulation [16,17], and other methods are commonly used to study heat exchangers. Some scholars use three-dimensional numerical simulation methods to conduct the calculation of straight channel [18][19][20][21], Zigzag channel [22][23][24][25], S-shaped fins channel [26][27][28][29], and airfoil fins channel [30][31][32][33] structures and obtained detailed temperature and velocity fields. Straight channels have a simple structure but poor heat transfer performance.…”

Section: Introductionmentioning

confidence: 99%

Fast Calculation of Supercritical Carbon Dioxide Flow, Heat Transfer Performance, and Mass Flow Rate Matching Optimization of Printed Circuit Heat Exchangers Used as Recuperators

Xi,

Xie,

Zhao

et al. 2023

Mathematics

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Printed circuit heat exchangers (PCHEs) are widely used as recuperators in the supercritical carbon dioxide (S-CO2) Brayton cycle design. The variation of heat sources will have a great impact on the heat transfer effect of the recuperator. It is of interest to study the fast calculation of flow and heat transfer performance of PCHEs under different operating conditions to obtain the optimal comprehensive performance and provide guidance for the operation control strategy analysis. Herein, a fast calculation method is established through a one-dimensional model of a PCHE based on Modelica. The effects of working medium mass flow rate and inlet temperature on the flow and heat transfer process are analyzed from the three aspects of heat transfer rate, flow pressure drop, and comprehensive performance, and the mass flow rate matching optimization is realized. The results show that increased mass flow rate increases heat transfer rate and flow pressure drop. The efficiency evaluation coefficient (EEC) has a maximum value at which the mass flow rate values of the cold and hot channels are best matched, and the comprehensive performance is optimal. When the mass flow rate of the heat channel is 4.8 g/s, the maximum EEC is 1.42, corresponding to the mass flow rate of the cold channel, 4.2 g/s. Compared with the design condition, the heat transfer rate increases by 62.1%, and the total pump power increases by 14.2%. When the cold channel inlet temperature increases, EEC decreases rapidly, whereas EEC increases when the hot channel inlet temperature increases. The conclusions can provide theoretical support for the design and operation of PCHEs.

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“…Tian et al [30] investigated the comprehensive performance of PCHEs with eight different configurations using supercritical LNG as the working fluid and found that asymmetric fins had better heat transfer performance compared to symmetric fins. Wang et al [31] investigated the effects of airfoil fin geometric parameters (curvature, position of the maximum curvature, and thickness) and their arrangement (horizontal and vertical spacings) on the thermo-hydraulic performance of a PCHE. Accordingly, they found that the airfoil fin thickness had the largest effect on the thermal-hydraulic performance, followed by the curvature and longitudinal spacing.…”

Section: Introductionmentioning

confidence: 99%

Thermal-Hydraulic Characteristics of Carbon Dioxide in Printed Circuit Heat Exchangers with Staggered Airfoil Fins

Xiang

Xie

et al. 2023

Processes

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Airfoil fin printed circuit heat exchangers (PCHEs) have broad application prospects in the naval, aerospace, electric power, and petrochemical industries. The channel structure is a critical factor affecting their thermal-hydraulic characteristics. In this study, a novel PCHE channel structure with staggered NACA 0025 airfoil-shaped fins was proposed; accordingly, the thermal-hydraulic characteristics of the novel channel structure using carbon dioxide as the working fluid at different fin heights under different operating conditions (trans-, near-, and far-critical) were investigated. The results indicated that the thermal-hydraulic performance of the PCHE under the trans-critical operating condition was better than that under the near-critical and far-critical operating conditions. Compared with conventional airfoil fin channels, the novel airfoil fin channel attained comparable comprehensive performance while reducing the fin volume by 50%, thus achieving a more lightweight PCHE design. The comprehensive performance of the PCHE was the poorest when the fin height was slightly below the channel height, which should be avoided during the design of airfoil fin PCHEs. The results provide theoretical support for the design and optimization of airfoil fin PCHEs.

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Parametric Study on Thermo-Hydraulic Performance of NACA Airfoil Fin PCHEs Channels

Cited by 9 publications

References 28 publications

Performance of a Metal Foam Coated Airfoil Tube Cross-Flow Heat Exchanger

Performance of a Metal Foam Coated Airfoil Tube Cross-Flow Heat Exchanger

Fast Calculation of Supercritical Carbon Dioxide Flow, Heat Transfer Performance, and Mass Flow Rate Matching Optimization of Printed Circuit Heat Exchangers Used as Recuperators

Thermal-Hydraulic Characteristics of Carbon Dioxide in Printed Circuit Heat Exchangers with Staggered Airfoil Fins

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