2018年6月7日 · 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).

2024年7月1日 · This study modified a model based on the Euler-Euler model to describe the frosting performances of the AAV (Air Ambient Vaporizer) heat transfer process in the LNG (Liquefied Natural Gas) industry at ultra-low temperatures.

2022年4月25日 · This paper analyzed the process of heat transfer deterioration of finned tubes due to the cryogenic LNG phase-change, heat-absorption characteristics of LNG during AAV operation. However, the shape of the fin and the temperature difference from the root to the top itself probably affected the accuracy of the calculation result.

2023年11月3日 · In this study, we conducted preliminary research with the objective of leveraging artificial intelligence to optimize the efficiency and safety of the entire Ambient Air Vaporizer (AAV) system for LNG (Liquid Natural Gas).

2022年4月1日 · The heat transfer deterioration caused by frosting is the critical factor affecting the liquefied natural gas (LNG) vaporization efficiency of the ambient air vaporizer (AAV). In this paper, an LNG vaporization system using a solar-assisted heat pump (DX-SAHPNV) was proposed for AAV defrosting and LNG auxiliary heating, and a low-temperature ...

2017年1月5日 · Liquefied natural gas (LNG) ambient air vaporizer (AAV) is a cryogenic heat exchanger, which utilizes ambient air to evaporate LNG in gas terminal stations. The moist air around the AAV fin tube may freeze during the long-time operation, leading to a worse heat transfer performance.

2022年4月19日 · The ambient air vaporizer (AAV) for LNG vaporization is an ideal selection for minimizing the average monetary value of terminals and maximizing operating efficiency.

2018年6月7日 · The ambient air vaporizer (AAV) technology is a promising option for vaporization of cryogenic fluids including liquefied natural gas (LNG). In this study, the...

2024年12月11日 · 影响AAV传热性能的因素大致有：LNG入口流速、操作压力、空气温度、空气流速以及翅片管结构等。 由于下游用户使用天然气不均匀，因此气化量具有波动性，其传热系数和焓差也会随着气化量发生变化，所以必须考虑LNG气化量的影响，也就是入口流速带来的影响。 理论上，由于流量增大，流体湍流性增强，传热系数会随着流量的增大而增大。 但是由于流量增大，流体与管壁接触的时间变短，换热量减少，因此出入口焓差却不会一直增大，在一定的运行工况 …

2016年8月8日 · Vaporizer is used to convert LNG to gas. There are several type of vaporizer that popularly used: Ambient Air Vaporizer (AAV) Intermediate Fluid Vaporizer