Numerical Investigation of the Concave-Cut Baffles Effect  in Shell-and-Tube Heat Exchanger

Petinrin, Moses Omolayo; Dare, Ademola A.

doi:10.21272/jes.2019.6(1).e1

Cited by 7 publications

(3 citation statements)

References 17 publications

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“…New methods of separating multicomponent systems have been created for example separation in a vortex flow [13], separation under the action of a magnetic field [14], inertia-filtrating, gas dynamic, vibration-inertial, and acoustic separation. The ways for intensification of the operating process [15,16], and methodology of numerical simulations of heat and mass exchange processes, as well as approaches to improve parameters for the corresponding multi-functional oil-gas separators and shell-and-tube heat exchangers, are presented in [17,18].…”

Section: Literature Reviewmentioning

confidence: 99%

Identification of the Interfacial Surface in Separation of Two-Phase Multicomponent Systems

et al. 2020

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The area of the contact surface of phases is one of the main hydrodynamic indicators determining the separation and heat and mass transfer equipment calculations. Methods of evaluating this indicator in the separation of multicomponent two-phase systems were considered. It was established that the existing methods for determining the interfacial surface are empirical ones, therefore limited in their applications. Consequently, the use of the corresponding approaches is appropriate for certain technological equipment only. Due to the abovementioned reasons, the universal analytical formula for determining the interfacial surface was developed. The approach is based on both the deterministic and probabilistic mathematical models. The methodology was approved on the example of separation of two-phase systems considering the different fractional distribution of dispersed particles. It was proved that the area of the contact surface with an accuracy to a dimensionless ratio depends on the volume concentration of the dispersed phase and the volume of flow. The separate cases of evaluating the contact area ratio were considered for different laws of the fractional distribution of dispersed particles. As a result, the dependence on the identification of the abovementioned dimensionless ratio was proposed, as well as its limiting values were determined. Finally, a need for the introduction of the correction factor was substantiated and practically proved on the example of mass-transfer equipment.

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Section: Literature Reviewmentioning

confidence: 99%

Identification of the Interfacial Surface in Separation of Two-Phase Multicomponent Systems

et al. 2020

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“…Lalot et al (1999) showed experimentally that a perforated plate with holes of equal diameter in the inlet header increased the heat transfer efficiency [10]. Recently, numerical studies have been conducted to increase the thermal performance of heat exchangers and air distribution devices by considering a perforated plate [11], baffles [12], or varying the transverse and longitudinal pitches of tube bundles [13].…”

Section: Introductionmentioning

confidence: 99%

“…They obtained the mathematical model for determining the dependence of the average velocity on the flow rate, perforated plate area, and diameter of holes. Petinrin et al [12] numerically investigated the performance of shell-and-tube heat exchangers with single segmental baffles and varying configurations of concave-cut baffles. Their numerical results generally showed that shell-and-tube heat exchangers with concave-cut baffles had a lower performance as compared with the single-segmental baffle type.…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of Flow Uniformity Improvement by a Perforated Plate in the Heat Exchanger of SFR Steam Generator

Nguyen

Jung

et al. 2021

Energies

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The steam generator in a nuclear power plant is a type of heat exchanger in which heat transfer occurs from the hot fluid in multiple channels to the cold fluid. Therefore, a uniform flow over multiple channels is necessary to improve heat exchanger efficiency. The study aims at experimentally investigating the improvement of flow uniformity by the perforated plate in the heat exchanger used for a sodium-cooled fast reactor stream generator. A 1/4-scale experimental model for one heat exchanger unit with 33 × 66 channels was manufactured. The working fluid was water. A perforated plate was systematically designed using numerical simulations to improve the flow uniformity over the 33 × 66 channels. As a result, the flow uniformity greatly improved at a slight cost of pressure drop. To validate the numerical results, planar particle image velocimetry measurements were performed on the selected planes in the inlet and outlet headers. The experimental velocity profiles near the exits of the channels were compared with numerical simulation data. The experimental profiles agreed with the numerical data well. Both the numerical simulation and the experimental results showed a slight increase in pressure drop, despite significant improvement in the flow uniformity.

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Methodology of Experimental Research of Aeroelastic Interaction Between Two-Phase Flow and Deflecting Elements for Modular Separation Devices

Demianenko

Liaposhchenko

Pavlenko

et al. 2020

Lecture Notes in Mechanical Engineering

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Numerical Investigation of the Concave-Cut Baffles Effect in Shell-and-Tube Heat Exchanger

Cited by 7 publications

References 17 publications

Identification of the Interfacial Surface in Separation of Two-Phase Multicomponent Systems

Identification of the Interfacial Surface in Separation of Two-Phase Multicomponent Systems

Experimental Validation of Flow Uniformity Improvement by a Perforated Plate in the Heat Exchanger of SFR Steam Generator

Methodology of Experimental Research of Aeroelastic Interaction Between Two-Phase Flow and Deflecting Elements for Modular Separation Devices

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