Influence of Fins Number and Frosting on Heat Transfer through Longitudinal Finned Tubes of LNG Ambient Air Vaporizers

Lisowski, Filip; Lisowski, E.

doi:10.3390/en15010280

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…For the second variant, the profiles are shielded and the airflow is forced inside the housing by additional fans mounted on top of the vaporizer [3]. The larger the external surface area of longitudinally finned tubes, the more heat is collected by the fins and thus more energy is provided for the vaporization process [4]. Design and optimization problems related to the ambient air vaporizers with longitudinal finned tubes have been of interest to the authors of several previous publications.…”

Section: Introductionmentioning

confidence: 99%

Determination of Aerodynamic Drag Coefficients of Longitudinal Finned Tubes of LNG Ambient Air Vaporizers Using CFD and Experimental Methods

Lisowski

2022

Applied Sciences

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This paper presents the results of numerical and experimental studies of wind action on longitudinal finned tubes of LNG ambient air vaporizers. The main objective of the study was to determine the aerodynamic drag coefficients for longitudinal finned tubes with different number of fins considering various directions of wind action. Numerical calculations were performed using CFD analysis, while experimental tests were carried out in a wind tunnel test stand. The obtained results indicate the variation of tube loads depending on the number of fins and the direction of wind action and can be used in the design of ambient air vaporizers.

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Section: Introductionmentioning

confidence: 99%

Determination of Aerodynamic Drag Coefficients of Longitudinal Finned Tubes of LNG Ambient Air Vaporizers Using CFD and Experimental Methods

Lisowski

2022

Applied Sciences

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“…All of these studies confirm the feasibility of choosing numerical simulation methods for the study of hydrodynamics and heat transfer in heat exchangers. Lisowski et al [25] used numerical analysis to find the influence of the number of fins and frost accumulated within the fin surface on the heat transferred through the aluminum finned tubes of ambient air vaporizers. For this purpose, the finite element thermal analysis within ANSYS software was used.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Heat Exchange Plate Geometry by Modeling Physical Processes Using CAD

et al. 2022

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This article presents the possibility of evaluating the efficiency of the heat exchange element with a special stamping plate, which is based on the results of computer simulation. The method is based on a comparative analysis of convective heat transfer models implemented in ANSYS using a k-ε turbulence model. To conduct the study, 3D models of three different types of cavity geometry formed between two heat exchange plates (flat plate, chevron plate, and plate with conical stampings) were built. Simulation was performed by finite element analysis in ANSYS for channels formed by the three types of plates, one of which is a new configuration. The results of hydrodynamic and heat exchange parameters allowed for establishing the efficiency of convective heat exchange for plates of known structures and to compare them with the proposed one. It was found that the plates with conical stamping form the smallest channels through which the fluid moves. The velocity of the coolant is uniform throughout the cross section of the channel and equal to 0.294 m/s; the value of the heat transfer coefficient is the largest of the three models and is 5339 W/(m K), while the pressure drop is 1060 Pa. Taking into account the simulation results, the best heat transfer parameters were shown by the channel formed by plates with conical stamping and the highest pressure drop. To increase the efficiency, indicated by the ratio of heat transfer coefficients to hydraulic resistance, the geometry of the plate with conical stamping was optimized. As a result of optimization, it was found that the optimal geometric parameters of the heat exchange plate with conical stamping were achieved at a 55° inclination angle and 1.5 mm height for the cone. The results of this study can be used in the design of heat exchange elements of new structures with optimal parameters for highly efficient heating of liquid coolants.

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“…Adding fins is considered an effective measure to improve thermal conductivity, and the effects of fin height, thickness, and number on heat transfer have been studied [8] [9]. Ashraf [10] et al researched the results of different fin arrangements, shapes, and heating power on the melting of paraffin.…”

Section: Introductionmentioning

confidence: 99%

Study on the Enhancement of Heat Transfer Characteristics in Phase Change Process

Bai

2022

J. Phys.: Conf. Ser.

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The effect of adding fins on heat transfer rate of phase change heat storage unit was studied by numerical simulation. Different operating conditions were designed to compare the effects of the number, height and thickness of fins on enhanced heat transfer. The heat storage device is placed vertically with a 500*50*10 mm model, the inlet temperature of the thermal fluid is 373.15 K, and the flow velocity is 0.4 m/s. The optimal heat transfer rate can be determined by monitoring the liquid proportion curve over time and comparing the melting cloud image. The results show that increasing the number of fins can effectively improve the heat transfer efficiency. The 4 mm is the optimal choice for the height and thickness of the fins.

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Influence of Fins Number and Frosting on Heat Transfer through Longitudinal Finned Tubes of LNG Ambient Air Vaporizers

Cited by 7 publications

References 15 publications

Determination of Aerodynamic Drag Coefficients of Longitudinal Finned Tubes of LNG Ambient Air Vaporizers Using CFD and Experimental Methods

Determination of Aerodynamic Drag Coefficients of Longitudinal Finned Tubes of LNG Ambient Air Vaporizers Using CFD and Experimental Methods

Optimization of Heat Exchange Plate Geometry by Modeling Physical Processes Using CAD

Study on the Enhancement of Heat Transfer Characteristics in Phase Change Process

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