Thermal resistance analysis of cryogenic frosting and its effect on performance of LNG ambient air vaporizer

Liu, Shanshan; Jiao, Wenling; Ren, Lixin; Tian, Xiaolin

doi:10.1016/j.renene.2019.10.072

Cited by 30 publications

(2 citation statements)

References 23 publications

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“…Chen et al ( 2013) [11] presented a study on the thermal conductivity of frost accumulated on the finned tube of cryogenic vaporizers using a fractal method. In turn, studies presented by Kuang et [16] were concerned with the analysis of ambient air vaporizer operation, including frosting conditions and their influence on heat transfer efficiency.…”

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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“…With the use of ultra-low temperatures in industrial production and aerospace applications, the frosting that can occur on cryogenic surfaces during application is of increasing concern. For example, as liquefied natural gas (LNG) [1][2][3] has become more widespread, LNG vaporization units have evolved. Ambient air vaporizers (AAVs) [4][5][6][7], which utilize the atmosphere as a heat source to vaporize liquid natural gas, may experience surface frosting during operation.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Forced Convection Frost Formation in Microtubule Bundles at Ultra-Low Temperature

et al. 2022

Aerospace

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Hypersonic vehicles are an important area of research in the aerospace field today. One of the important issues is the power of the engine. In order to achieve large-span flight speeds, a more efficient approach is to use combined power systems. However, the problem of pre-cooler icing can occur in combined engine applications. The flow in the pre-cooler is extremely complex. Outside the tube is the high-temperature wet air entering from the engine intake, and the tube cooling is the ultra-low temperature cooling medium. Icing not only increases the heat exchange resistance of the pre-cooler during operation and affects the heat exchange performance of the pre-cooler, but also causes a large total pressure loss, resulting in a degradation of the engine performance. There is a lack of research on the icing law of the pre-cooler under different parameters. Therefore, it is necessary to conduct a corresponding numerical calculation study on pre-cooler icing and explore the influence of various influencing factors on icing. In this paper, a mathematical model of icing (frost) is established for the frosting phenomenon that may occur during the operation of the pre-cooler. Additionally, the principle of heat and mass transfer in the icing process is described by the mathematical model, and the influence of different parameters on the frosting parameters is explored by using the computational fluid dynamics (CFD) method. The law of tube bundle icing under different parameters was calculated, and the variation laws of frost layer morphology and wet air pressure drop were obtained. The laws of tube bundle icing under different parameters were calculated, and the changes in frost layer pattern and wet air pressure drop when each parameter was changed, which can provide guidance for the design and application of pre-coolers in the future.

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A Multiple-Field Finite Element Method Analysis of Observation Window for Cryogenic Wind Tunnel

Lai

Song

et al. 2022

Exp Tech

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Thermal resistance analysis of cryogenic frosting and its effect on performance of LNG ambient air vaporizer

Cited by 30 publications

References 23 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

Simulation of Forced Convection Frost Formation in Microtubule Bundles at Ultra-Low Temperature

A Multiple-Field Finite Element Method Analysis of Observation Window for Cryogenic Wind Tunnel

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