Enhancement Of Plate-Fin Heat Exchanger Performance with Aid of Various Types of Fin Configurations: A Review

Abbas, Ali; Mohammed, Ayad Ali

doi:10.37934/arfmts.99.2.4866

Cited by 5 publications

(3 citation statements)

References 34 publications

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“…Performance evaluation criterion (PEC) : In order to compare the performance of the PFHE the PEC is studied as a measure of the amount of the heat-transfer enhancement against the pressure drop [19]. The PEC factor is a the larger the better parameter.…”

Section: Pin -Pout = δPmentioning

confidence: 99%

Improvement of Plate-Fin Heat Exchanger Performance with Assistance of Various Types of Vortex Generator

Abbas

Mohammed

2023

CFDL

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A 3-dimensional incompressible laminar flow and heat-transfer in a plate-fin heat exchanger (PFHE) where investigated numerically in this article. The influence of mounting a longitudinal vortex generator (LVG) on the offset rectangular-triangular fin (ORT) in the PFHE, on thermal and hydro-dynamic fields are presented. The novelty of this study is by attaching a LVG to an offset strip fin (OSF) surface. The cases of study for the PFHE are established, by using a built-in rectangular winglet pair type RWP longitudinal vortex generator carried out and fitted on this fin to improve the convective heat transfer of the (ORT) fin while minimizing pressure loss. The upper and lower plates are exposed to constant heat flux and the working fluid is air where chosen under a laminar range of RE (600 to 1400). The laminar flow and heat-transfer are governed by continuity, momentum and energy equations. ANSYS FLUENT (2021 R1) is used to get the numerical results, based on the finite volume method. The performance of the VG is assessed for an optimum winglet attack angle (45°), as well as by modifying the geometrical size parameters, namely the height and placement (L) of the RWP LVG. The result shows that the Nusselt number reaches its optimum enhancement values by using a common flow up CFU built-in rectangular winglet pair type RWP VG with a height and entrance length of (h=1.25mm, L=0.5mm), by 22.23% as compared with base case configuration (ORT). Finally, a two more LVG are tested with the optimum conditions of the RWP, which they are a delta winglet pair (DWP) and trapezoidal winglet pair (TWP). In addition, the temperature fields for the primary and secondary flows were shown in contour and streamline diagrams

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Section: Pin -Pout = δPmentioning

confidence: 99%

Improvement of Plate-Fin Heat Exchanger Performance with Assistance of Various Types of Vortex Generator

Abbas

Mohammed

2023

CFDL

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“…ii. The amount of deviation or displacement was calculated using the following relationship [32] def (mm) = amplitude (v)…”

Section: Natural Frequency Calculationmentioning

confidence: 99%

Characteristics of Flow-Induced Vibration of Conveying Pipes for Water and Coolant Flow

Mohammed

Salman

2023

ARFMTS

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One of the effects of vibrations resulting from the flow of fluids is the failure that occurs to the structure of the systems, which in turn affects the efficiency of the parts that make up those systems. for the purpose of studying the possibility of improving the performance of the systems, a liquid other than water and coolant (super antifriz\petrol ofisi) was chosen because of its advantages that can be taken advantage of, including the high viscosity of water and its tolerance to high temperatures resulting from combustion or air temperature, as well as low temperatures to ensure the operation of the system, that is, it maintains stability system temperature to obtain the best possible condition In addition to the purity of the liquid from salts and the presence of a percentage of oil in the composition of the coolant, an insulating layer is formed inside the pipes to prevent rust and corrosion in the pipes, thus ensuring the flow of fluids and prolonging the life of the pipes. The aim is to study and analyze the effect of induced vibrations and internal pressure on fluid transport pipes, and to compare them in the cases of using water and coolant under the same conditions. An empirical analysis considering the natural frequencies produced by the effect of fluid pressure under various stabilization conditions. It was observed from the results that the higher the pressure, the greater the percentage of the deflection of the copper tubes compared to the Aluminium tubes when using both liquids (water and coolant) at the same boundary condition noted the percentage of the deflection difference when using copper pipe (from 0% to 20.3%) was less than using Aluminium (from 2% to 59%) when the pressure was increased. That mean the Aluminium pipe better than copper pipe.

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“…Corrugated or modified tubes serve as enhanced transferring of heat devices. They exhibit numerous advantages in engineering and practical applications due to their ability to promote secondary recirculation flow by generating non-axial velocity components [13,14].…”

Section: Introductionmentioning

confidence: 99%

Empirical Investigation of Thermal Features of Phase Change Material as Thermal Storage System

Doaa Fadhil Kareem,

Ayad Ali Mohammed,

Hussein Al-Gburi

2024

ARFMTS

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This paper presents an empirical investigation of the melting processes of phase change material (PCM) in a tube and shell heating exchanger utilizing solar thermal energy. The experiments were conducted outdoors in Al-Mussaib city, Babylon, Iraq (Lat 32.5° North, long 44.3° East), utilizing a north-south (N-S) collector oriented at a tilt angle of 32.5° from the horizontal. This work utilized pure Iraqi black paraffin with 12 kg as PCM. The main empirical rig involves a vacuum tube solar collector (VTSC) utilizing a tube and shell heating exchanger to melt PCM in the shell regime. Different rates of water flow inside the internal heating exchanger's tube, namely (3.5, 5, and 8.5 L/m), were utilized for each season from August 2022 to January 2023. The empirical findings concluded that the internal tube inlet and surrounding temps significantly influence the melting process compared to the rates of water flow. It was found that the melting process of PCM needs about (3 to 4) hours in the summer season. Still, winter needs a longer time, about 14 to 16 hours. Increasing surrounding temp and solar radiation reduces the melting time of phase-change material. The findings of the present work were compared with the earlier investigations and agree with increasing the present work by 23.5 %. The findings from the present study are of practical importance for industries requiring storage materials to improve thermal storage system performance.

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Enhancement Of Plate-Fin Heat Exchanger Performance with Aid of Various Types of Fin Configurations: A Review

Cited by 5 publications

References 34 publications

Improvement of Plate-Fin Heat Exchanger Performance with Assistance of Various Types of Vortex Generator

Improvement of Plate-Fin Heat Exchanger Performance with Assistance of Various Types of Vortex Generator

Characteristics of Flow-Induced Vibration of Conveying Pipes for Water and Coolant Flow

Empirical Investigation of Thermal Features of Phase Change Material as Thermal Storage System

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