Numerical investigation of the flow dynamics and heat transfer in a rectangular shell-and-tube heat exchanger

Slimene, Marwa Ben; Poncet, Sébastien; Bessrour, Jamel; Kallel, Ftouh

doi:10.1016/j.csite.2022.101873

Cited by 14 publications

(5 citation statements)

References 34 publications

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“…The result of the first case of one tube and one pass heat exchanger as followings figures (9)(10)(11)(12)(13)(14). It is observed that in the temperature chart the temperature has lowest value in the inlet of the x direction nearly fixed and the then reached its maximum value after the mid of the heat exchanger.…”

Section: A Cfd Results For the First Casementioning

confidence: 94%

“…First components the front-end head type, the second is the rear end head type and the third is the shell type. [11] III.EXPERIMENTAL METHODOLOGY DESCRIPTION Heat exchanger is a device that its main function is to transfer energy between fluids at different temperatures through heat transfer. They are classified according to construction is being used and that classification separates heat exchangers in recuperators and regenerators.…”

Section: Literature Reviewmentioning

confidence: 99%

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CFD Comparative study of Design and Performance of shell-and-tube Heat Exchangers with different configurations

Abdelhamid

Bastawissi

2022

Journal of Engineering Research

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A different models of Shell-and-tube heat exchangers were designed by Ansys geometry & Solidworks to evaluate the best model for heat transfer and to calculate the difference in heat transfer in each model by investigated with numerically modeling. Each model for heat exchanger has different assumptions for first model one tube & one pass with tube length 3 meter, was made with 2 different cases (each case have the same conditions such as same temperature, same velocity, changing the direction of the flow between parallel and counter flow). The flow and temperature fields inside the shell and tubes are resolved using a Ansys CFD 17.2. A set of CFD simulations is performed for a single shell and tube bundle and is compared with the experimental results. the Realizable K-ε model is known for predicting the flow separation better than Standard K-ε. The temperature of each model is examined in detail. Each design was studied separately on the basis of the findings, the designs need modifications to improve heat transfer.The main goal of designing these models is to obtain highest performance for shell and tube heat exchanger with givien conditions. These studies were carried out to find the most suitable conditions of operation in shell and tube heat exchanger so that in the future it can improve the performance of heat exchanger in industries through applying these conditions. For future researches, the shell and tube heat exchanger the best case in performance will be chosen, then try to develop the shell and tube heat exchanger and reach maximum performance and efficiency of shell and tube heat exchanger. so that, in industries, the heat exchanger will be easier to be chosen based on the function and conditions required.

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Section: A Cfd Results For the First Casementioning

confidence: 94%

Section: Literature Reviewmentioning

confidence: 99%

CFD Comparative study of Design and Performance of shell-and-tube Heat Exchangers with different configurations

Abdelhamid

Bastawissi

2022

Journal of Engineering Research

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“…Convection within the fluids (natural and forced), conduction in solid regions, thermal radiation and external heat gain or loss from the outer boundaries of the model can be computed using Ansys Fluent. The performance of parametric analysis on the average value of convective heat transfer coefficient is done based on results of 3D in CFD simulations described by an average flow direction [13].…”

Section: Computational Fluid Dynamics (Cfd) Application In Heat Excha...mentioning

confidence: 99%

A Review on Comparative Performance of Shell-and-tube Heat Exchangers with Various Design Configurations

Abdelhamid

Bakry

Bastawissi

2022

Journal of Engineering Research

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Widely known that, heat exchanger is a device that is being used to transfer thermal energy (enthalpy) between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact. The most common heat transfer devices are concentric tube (double pipe), shell and tube and, plate heat exchanger. Nowadays, Shell and tube heat exchangers were used extensively in most industries as petrochemicals, oil and refineries. According to previous survey, almost 45% of heat exchangers utilized are shell and tube heat exchangers due to its highpressure application it is more suitable in the field of oil & petrochemical application. Thus, the following study presented shell and tube type only. Due to complexity of studying heat exchangers experimentally, Computational Fluid Dynamics (CFD) used to simulate the effect of local surface heat transfer coefficients on the surfaces by aid of computer numerical calculation and graphical display. In addition, analysis of the physical phenomena involved in fluid flow and heat conduction would be presented in the following research paper with Comparative designs for shell and tube heat exchangers. The paper considered a review for the design of a shell and tube heat exchanger. A variety of heat exchangers are used in industry and in their products. The objective of this paper is to describe most of these heat exchangers in some detail using classification schemes and the basic design methods for two fluid heat exchangers. The design techniques of recuperators and regenerators. Therein, popular analytical techniques such as log mean temperature difference (LMTD) and effectiveness-number of transfer units (ε-NTU) were considered in the analysis. In the case considered herein, both LMTD and ε-NTU techniques yield the same exact results. Keywords-Heat Exchanger; Shell and tube heat Exchanger; parallel flow; counter flow; single pass shell and tube.

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“…CHT affects the entire energy sector, both conventional and renewable, because it is the governing physical process in all heat-exchanger designs, such as pillow-plate [6], fin-and-tube [7], cross-flow [8], double-pipe [9], flat-plate [10], tube-bundle [11], and shelland-tube [12]. It also plays an important role when investigating porous media [13,14].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Conjugate Heat Transfer and Natural Convection Using the Lattice-Boltzmann Method for Realistic Thermophysical Properties

Landl

Prieler

Monaco

et al. 2023

Fluids

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To enable the lattice-Boltzmann method (LBM) to account for temporally constant but spatially varying thermophysical properties, modifications must be made. Recently, many methods have emerged that can account for conjugate heat transfer (CHT). However, there still is a lack of information on the possible physical property range regarding realistic properties. Therefore, two test cases were investigated to gain further insight. First, a differentially heated cavity filled with blocks was used to investigate the influence of CHT on the error and stability of the LBM simulations. Reference finite volume method (FVM) simulations were carried out to estimate the error. It was found that a range between 0.5 to 1.5 is recommended for the fluid relaxation time to balance computational effort, stability, and accuracy. In addition, realistic thermophysical properties of fluids and solids were selected to test whether the lattice-Boltzmann method is suitable for simulating relevant industry-related applications. For a stable simulation, a mesh with 64 times more lattices was needed for the most extreme test case. The second test case was an insulated cavity with a heating pad as the local heat source, which was investigated in terms of the accuracy of a transient simulation and compared to a FVM simulation. It was found that the fluid-phase relaxation time mainly determines the error and that large thermal relaxation times for the solid improve accuracy. Observed deviations from the FVM reference simulations ranged from approximately 20% to below 1%, depending on collision operator and combination of relaxation times. For processes with a large temperature spread, the temporally constant thermophysical properties of the LBM are the primary constraint.

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Numerical investigation of the flow dynamics and heat transfer in a rectangular shell-and-tube heat exchanger

Cited by 14 publications

References 34 publications

CFD Comparative study of Design and Performance of shell-and-tube Heat Exchangers with different configurations

CFD Comparative study of Design and Performance of shell-and-tube Heat Exchangers with different configurations

A Review on Comparative Performance of Shell-and-tube Heat Exchangers with Various Design Configurations

Numerical Investigation of Conjugate Heat Transfer and Natural Convection Using the Lattice-Boltzmann Method for Realistic Thermophysical Properties

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