Modeling of Cryogenic Liquefied Natural Gas Ambient Air Vaporizers,Industrial & Engineering Chemistry Research

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Modeling of Cryogenic Liquefied Natural Gas Ambient Air Vaporizers
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-07-09 , DOI: 10.1021/acs.iecr.8b01226
Biao Sun ₁ , Divyamaan Wadnerkar ₁ , Ranjeet P. Utikar ₁ , Moses Tade ₁ , Neil Kavanagh ₂ , Solomon Faka ₂ , Geoffrey M. Evans ₃ , Vishnu K. Pareek ₁

Affiliation

The ambient air vaporizer (AAV) technology is a promising option for vaporization of cryogenic fluids including liquefied natural gas (LNG). In this study, the heat transfer between ambient air and cryogenic LNG under supercritical conditions has been studied by using computational fluid dynamics (CFD). The process of regasification was first analyzed from the thermodynamics standpoint. In the absence of actual data for LNG, the empirical correlations and experimental data for supercritical flows of water and carbon dioxide were used to validate the CFD model. The model was then used to investigate the supercritical flow of LNG inside AAV. Operating conditions such as air flow velocity and operating pressure were studied. Furthermore, optimization of fin configurations including the number of fins, fin length, and fin thickness was also investigated. The methodology and results discussed in this study are of critical importance for designing AAV.

中文翻译：

低温液化天然气环境空气蒸发器的建模

对于蒸发包括液化天然气（LNG）在内的低温流体，环境空气蒸发器（AAV）技术是一种有前途的选择。在这项研究中，已通过使用计算流体力学（CFD）研究了超临界条件下环境空气与低温LNG之间的热传递。首先从热力学角度分析了再气化过程。在没有LNG实际数据的情况下，使用水和二氧化碳超临界流的经验相关性和实验数据来验证CFD模型。然后，该模型用于研究AAV内LNG的超临界流动。研究了诸如空气流速和操作压力的操作条件。此外，优化了鳍片配置，包括鳍片数量，鳍片长度，并研究了鳍片的厚度。在这项研究中讨论的方法和结果对于设计AAV至关重要。

更新日期：2018-07-10

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