CFD analysis of two types of welded plate heat exchangers

Luan, Huibao; Kuang, Jian; Cao, Zhenggang; Wu, Zan; Tao, Wen‐Quan; Sundén, Bengt

doi:10.1080/10407782.2016.1264761

Cited by 32 publications

(11 citation statements)

References 34 publications

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“…The corrugation profile might cause complicated turbulent flows in the channel even at a relatively low Reynolds number [4]. The Reynolds number (Re = ρu m D e /µ) is a function of the density of water, mean velocity, the viscosity of water, and equivalent diameter defined as twice the height of the corrugation profile (D e = 2H) [19,20]. The fluid flow is considered in the laminar region at Re < 400 and transition region at 400 < Re < 1000.…”

Section: Mathematical Representationsmentioning

confidence: 99%

Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles

Lee

2020

Energies

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The present study numerically investigates thermal performance and turbulent flow characteristics of chevron-type plate heat exchangers with sinusoidal, trapezoidal, triangular, and elliptical corrugation profiles. The commercial code of ANSYS Fluent (v. 17.0) is used for computational fluid dynamics (CFD) simulation with the realizable k-ε model. In particular, we focus on the influence of configuration shape on a substantial change in flow direction near the contact point, yielding local vorticity. As a result, secondary vortical motions are observed in the flow passage with vorticity that is distributed locally and which changes near the contact point. Higher flow mixing generated and distributed by the secondary vortical motions contributes to the increase of the Colburn j-factor as well as the friction factor. The highest Colburn j-factor and friction factor are obtained for an elliptical profile, compared to other shapes, because of the increase in the vortex strength near the contact point.

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Section: Mathematical Representationsmentioning

confidence: 99%

Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles

Lee

2020

Energies

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“…Also, it allows a realistic distribution of the heat flow along the transfer surface during simulation. Luan and all investigated the reliability of the CFD simulation to study different PHE geometries, in order to improve the mesh quality around the contact points [26]. Recently, Pan and all developed a 2D dynamic model that simulate the fouling layer domain and its effect on the hydrodynamics and heat transfer [27].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Simulation Under Milk Fouling in A Plate Heat Exchanger in The Presence of a Porous Medium

Sannad

Zaza

Hammami

et al. 2022

ARFMTS

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Fouling is a known dairy industry issue during thermal treatments using a plate heat exchanger (PHE) it directly affects not only energy costs and maintenance but also production, energy and water losses during cleaning operations. Therefore, a considerable attention has been paid to the modelling of the fouling phenomena in order to improve the PHE performances. In this paper, a mathematical model describing the steady state was established for the flow at the macroscopic scale; the model account for constant and turbulent flows between two flat parallel plates at imposed temperature in the presence of a porous medium. The closure k-ε model has been chosen and the conservation of equations has been developed. The numerical procedure adopted was based on the finite volume method on the Fluent CFD software. The accuracy of the Fluent software was validated by comparing our results with those previously published in the literature. The numerical results showed a good reliability of the developed code for both laminar and turbulent regimes of the studied phenomenon. It was able to capture the dynamic and the thermal aspects of the process. The maximum velocity at the output of the channel increased when the thickness of the porous medium was increased. An increase of the average temperature over the whole length of the channel was observed; while a decrease of the average temperature at the outlet of the channel was noticed. The deposit fouling caused additional thermal resistance. Finally, a decrease of the temperature gradient and Nusselt number in the medium of the channel was observed.

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“…Heat transfer performance and heat transfer limits are popular research subjects 15,31–33 . In this study, naphthalene carbon steel heat pipes were produced for heat transfer performance tests.…”

Section: Introductionmentioning

confidence: 99%

Optimum liquid filling capacity and explosion limits of naphthalene gravity heat pipes

Yan

Zou

et al. 2020

Asia-Pacific J Chem Eng

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In this study, naphthalene heat pipes were produced and filled with different materials to test the heat transfer performance. The relationship between the pipes' diameters, liquid content, wall temperature distribution, and transmission power was studied. An explosion test was designed to assess the operating temperature limit of the naphthalene heat pipes. The results demonstrated an optimum filling amount to optimize the pipes' heat transfer performance. In practical applications, it is very important to strictly control the wall temperature of naphthalene heat pipes. When the wall temperature of the evaporation section reaches approximately 600°C, they can easily explode.

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CFD analysis of two types of welded plate heat exchangers

Cited by 32 publications

References 34 publications

Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles

Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles

A Numerical Simulation Under Milk Fouling in A Plate Heat Exchanger in The Presence of a Porous Medium

Optimum liquid filling capacity and explosion limits of naphthalene gravity heat pipes

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