Comparative performance assessment of plate heat exchangers with triangular corrugation

Sharif, Adel O.; Ameel, Bernd; T’Jollyn, Ilya; Lecompte, Steven; Paepe, Michel De

doi:10.1016/j.applthermaleng.2018.05.111

Cited by 14 publications

(3 citation statements)

References 40 publications

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“…The results indicate that the Reynolds Stress Model provides more accurate predictions, with simulated values within 7% of the experimental values. Sharif et al [31] used a Reynolds Stress Model to simulate unbaffled cross-corrugated triangular ducts with Re ranging from 310 to 2064, resulting in error within 5% of the experimental results. Therefore, the Reynolds Stress Model is adopted in this paper for the solution.…”

Section: Solution Proceduresmentioning

confidence: 99%

Design and Optimization of Cross-Corrugated Triangular Ducts with Trapezoidal Baffles Based on Response Surface Methodology and CFD

Liang,

Zhang,

Mao

et al. 2024

Energies

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Plate heat exchangers are widely used in the Heating, Ventilation, and Air Conditioning (HVAC) field. Cross-corrugated triangular ducts are commonly employed in plate heat exchangers. Inserting baffles into the cross-corrugated triangular ducts can improve the heat transfer performance of the plate heat exchangers. This study focuses on intricate interdependencies among the flow channel apex angle, the trapezoidal baffle inclination angle, baffle position, and Reynolds number (Re) on heat transfer and pressure drop using response surface methodology (RSM) and computational fluid dynamic (CFD). To identify the factors that maximize the Nusselt number (Nu) and minimize friction factor (f), the RSM is used to design factors, conduct numerical studies, and establish regression equations. The results show that the apex angle, baffle angle, X-direction position, and Re have significantly affected Nu and f. Compared to a non-baffled channel with the same apex angle and Re conditions, the optimized channel enhances heat transfer by 1.54 times and has an almost identical pressure drop. The inclined baffle significantly enhances comprehensive performance at low Re. The synergistic effect of the heat transfer and pressure drop is most optimal when the apex angle of the flow channel is 90°, the trapezoidal baffle inclination angle is 52.5°, and the Re is 1000, with the baffle position at 0.625H in the X-direction.

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Section: Solution Proceduresmentioning

confidence: 99%

Design and Optimization of Cross-Corrugated Triangular Ducts with Trapezoidal Baffles Based on Response Surface Methodology and CFD

Liang,

Zhang,

Mao

et al. 2024

Energies

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“…For constant specific heats with no change of phase, the heat transfer of cold fluid is given by Qc and for hot fluid is given by Qh [19].…”

Section: Data Reductionmentioning

confidence: 99%

Modelling & Numerical Investigation of the Effectiveness of Plate Heat Exchanger for Cooling Engine Oil Using ANSYS CFX

Agarwal¹

2021

IJHT

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Heat exchangers are used for various industrial application for transfer of enthalpy from hot fluid to cold. One of them is Plate Heat Exchanger which finds its application in evaporating systems. The compactness, high effectiveness and easy maintenance of Plate Heat Exchanger makes it best choice for process industries. The current research investigates the application of Plate Heat Exchanger in cooling of engine oil using techniques of Computational Fluid Dynamics for low, medium and high Reynolds number using ANSYS CFX software. The CAD model is developed using Creo design software and turbulence model used for analysis is RNG k-epsilon which gives good predictions for complex flows involving swirls. The CFD analysis is conducted for different values of Reynolds number. The temperature distribution, effectiveness and overall heat transfer coefficient is determined for different values of Reynolds number.

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“…They found that the apex angle substantially affected the heat transfer and pressure drop in the cross-sectional corrugated channel. In an another study, Sharif et al [4] investigated the effect of the apex angle on the thermal and hydraulic properties of the triangular cross-corrugated heat exchangers for a Reynolds number range of 310-2064. They observed that pressure drop and heat transfer coefficient enhance with increasing of the apex angle and the highest turbulence intensity, friction factor and Colburn j factor were achieved around the apex angles of 90°-100°.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer and pressure drop evaluation of different triangular baffle placement angles in cross-corrugated triangular channels

Karabulut

2020

Therm sci

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Plate heat exchangers have a widespread usage and the simplest parallel plate channel structures. Cross-corrugated ducts are basic channel geometries used in the plate heat exchangers. In this study, the increasing of heat transfer from the cross-corrugated triangular ducts by inserting triangular baffles with different placement angles into the channel upper side and pressure drop have been numerically investigated. Numerical calculations have been carried out to solve Navier-Stokes and energy equations by employing k-ε turbulence model as 3-D and steady with ANSYS-FLUENT program. While inlet temperature of the air used as working fluid is 293 K, constant surface temperature values of the the lower corrugated channel walls are 373 K. The height of the baffle and apex angle of the corrugated duct have been taken constant as 0.5 H and 60°, respectively. Investigated Reynolds number range is 1000-6000 while the baffle placement angles are 30°, 45°, 60°, and 90°. Numerical results of this study are within 3.53% deviation with experimental study existed in literature. The obtained results have been presented as mean Nusselt number temperature and pressure variations of the fluid for each baffle angle. The temperature and velocity vector contour distributions have been also assessed for different Reynolds numbers and baffle angles. The value of the Num for the corrugated channel with 60° baffle angle is 8.2% higher than that of the 90° for the Re = 4000. Besides, for Re = 1000 the value of the pressure drop is 39% lower in the channel with 60° baffle angle than that of 90°.

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Comparative performance assessment of plate heat exchangers with triangular corrugation

Cited by 14 publications

References 40 publications

Design and Optimization of Cross-Corrugated Triangular Ducts with Trapezoidal Baffles Based on Response Surface Methodology and CFD

Design and Optimization of Cross-Corrugated Triangular Ducts with Trapezoidal Baffles Based on Response Surface Methodology and CFD

Modelling & Numerical Investigation of the Effectiveness of Plate Heat Exchanger for Cooling Engine Oil Using ANSYS CFX

Heat transfer and pressure drop evaluation of different triangular baffle placement angles in cross-corrugated triangular channels

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