A comparative numerical study of shell and multi-tube heat exchanger performance with different baffles configurations

Marzouk, S.A.; Al-Sood, M.M. Abou; El-Fakharany, Magda K.; El‐Said, Emad M.S.

doi:10.1016/j.ijthermalsci.2022.107655

Cited by 23 publications

(4 citation statements)

References 30 publications

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“…Release 18.2 (2017). The mathematical model is based on the Navier-Stokes equations (Khmelnik, 2010; V. Trokhaniak and V. Gorobets Marzouk et al 2022) and the convective energy transfer equation. The standard k-ε turbulence model was chosen (ANSYS..., 2017).…”

Section: Methodsmentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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The research is devoted to the topical problem of the efficiency of turning wide-span bridge machines in the track farming system. The research aims to study the curvilinear movement along the soil traces of a constant technological track of an arbitrary multi-supported bridge machine, considering its design and method of turning, parameters, modes of movement and loading. Experimental studies were conducted, involving the use of a modern strain track and specially designed equipment for electrical measurements of non-electrical quantities. The processing of research data was carried out on a personal computer. A methodology for compiling private models of turning off the bridge vehicle moving along the soil trace of the constant technological track was developed. As a result of the joint solution problem of the bridge machine turning, it is possible to determine all output parameters of curvilinear motion: trajectory, tractive forces, turning radius, slipping, and actual speeds. The force interaction of the bridge machine's undercarriage with the soil trace of a constant track is presented based on flat sliding with a variable anisotropic friction coefficient of adhesion φ yd , depending on the properties of the track. As the radius of the wheel, the width of its tire and the air pressure in it, as well as the vertical load that acts on it, the coefficient of traction of the bridge machine φ yd increases, which may cause higher slippage. The adequacy of the model of stationary turning of the overhead machine is confirmed by experimental estimation of the

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Section: Methodsmentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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“…The CFD model was performed using the Navier-Stokes equations for convective flows [22][23][24]. The calculations use the Spalart-Allmaras turbulence model [25; 26] and the Discrete Ordinates radiation model [9; 27].…”

Section: Methodsmentioning

confidence: 99%

Investigation of the lateral ventilation system in a poultry house using CFD

Trokhaniak¹

2022

Tehnìka ta energetika

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Maintaining a normalised microclimate in a poultry house is one of the main factors. It is the quality indicators of air parameters that ultimately determine the quality of product output. Keeping poultry requires considerable efforts and technological solutions. In this regard, the purpose of the study is to improve the microclimate system in the poultry house by installing ventilation equipment on the side wall. A powerful tool for predicting the air flow pattern in a poultry house is Computational Fluid Dynamics (CFD) modelling using ANSYS Fluent. This is an alternative to experimental research. CFD modelling results have shown that the valves operate most efficiently at 330 mm from the ceiling. The pressure drop of the supply valves is 45.85 Pa. The air velocity at the inlet of the supply valves is 9.17 m/s. The air velocity at a height of 0.7 m from the floor level varies within 0.57 m/s, the temperature – 9.91°C

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“…The disadvantage is that because the data structure is irregular, it is more difficult to describe and store them. Block structure grid is a compromising of structured and unstructured grid [12].…”

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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A comparative numerical study of shell and multi-tube heat exchanger performance with different baffles configurations

Cited by 23 publications

References 30 publications

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Investigation of the lateral ventilation system in a poultry house using CFD

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

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