Design of reverse flow ambient air heated vaporizer under different ambient temperatures and optimization of the fin arrangement

Jadav, Chirag; Chowdhury, Kanchan

doi:10.1016/j.tsep.2022.101426

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…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. For cryogenic oxidizer tanks of liquid propulsion rockets [8], frost forms due to phase change deposition of water vapor, on the surface when moist air comes in contact with the tank surface at temperatures below 273 K. To solve the power problem of hypersonic vehicles, the inlet pre-cooling is used to extend the thrust range of the combined engine [9][10][11][12][13].…”

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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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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Suitability of part block switching of ambient air vaporizer for propane vaporization in contrast to cryogenic vaporization

Jadav

Chowdhury²

2023

Applied Thermal Engineering

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Determining the appropriate fin spacing for high performance and low footprint of direct contact ambient air-based vaporization systems

Jadav¹,

Chowdhury²

2023

International Journal of Refrigeration

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Design of reverse flow ambient air heated vaporizer under different ambient temperatures and optimization of the fin arrangement

Cited by 3 publications

References 19 publications

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

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

Suitability of part block switching of ambient air vaporizer for propane vaporization in contrast to cryogenic vaporization

Determining the appropriate fin spacing for high performance and low footprint of direct contact ambient air-based vaporization systems

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