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Review of the LNG intermediate fluid vaporizer and its heat transfer characteristics
Frontiers in Energy ( IF 2.9 ) Pub Date : 2021-06-10 , DOI: 10.1007/s11708-021-0747-y
Shu Li , Yonglin Ju

The intermediate fluid vaporizer (IFV), different from other liquefied natural gas (LNG) vaporizers, has many advantages and has shown a great potential for future applications. In this present paper, studies of IFV and its heat transfer characteristics in the LNG vaporization unit E2 are systematically reviewed. The research methods involved include theoretical analysis, experimental investigation, numerical simulation, and process simulation. First, relevant studies on the overall calculation and system design of IFV are summarized, including the structural innovation design, the thermal calculation model, and the selection of different intermediate fluids. Moreover, studies on the fluid flow and heat transfer behaviors of the supercritical LNG inside the tubes and the condensation heat transfer of the intermediate fluid outside the tubes are summarized. In the thermal calculations of the IFV, the selections of the existing heat transfer correlations about the intermediate fluids are inconsistent in different studies, and there lacks the accuracy evaluation of those correlations or comparison with experimental data. Furthermore, corresponding experiments or numerical simulations on the cryogenic condensation heat transfer outside the tubes in the IFV need to be further improved, compared to those in the refrigeration and air-conditioning temperature range. Therefore, suggestions for further studies of IFV are provided as well.



中文翻译:

LNG中间流体汽化器及其传热特性综述

中间流体汽化器(IFV)与其他液化天然气(LNG)汽化器不同,具有许多优点,在未来的应用中显示出巨大的潜力。在本文中,系统地回顾了 IFV 及其在 LNG 汽化装置 E2 中的传热特性的研究。涉及的研究方法包括理论分析、实验研究、数值模拟和过程模拟。首先,总结了IFV整体计算和系统设计的相关研究,包括结构创新设计、热计算模型、不同中间流体的选择等。而且,总结了管内超临界LNG的流体流动和传热行为以及管外中间流体的冷凝传热研究。在IFV的热力计算中,现有的中间流体传热相关性的选择在不同的研究中不一致,缺乏对这些相关性的准确性评估或与实验数据的比较。此外,与制冷和空调温度范围内的实验或数值模拟相比,IFV管外低温冷凝传热的相应实验或数值模拟需要进一步改进。因此,也提供了进一步研究IFV的建议。现有的关于中间流体的传热相关性的选择在不同的研究中不一致,缺乏对这些相关性的准确性评估或与实验数据的比较。此外,与制冷和空调温度范围内的实验或数值模拟相比,IFV管外低温冷凝传热的相应实验或数值模拟需要进一步改进。因此,也提供了进一步研究IFV的建议。现有的关于中间流体的传热相关性的选择在不同的研究中不一致,缺乏对这些相关性的准确性评估或与实验数据的比较。此外,与制冷和空调温度范围内的实验或数值模拟相比,IFV管外低温冷凝传热的相应实验或数值模拟需要进一步改进。因此,也提供了进一步研究IFV的建议。与制冷和空调温度范围内的实验或数值模拟相比,IFV 管外低温冷凝传热的相应实验或数值模拟需要进一步改进。因此,也提供了进一步研究IFV的建议。与制冷和空调温度范围内的实验或数值模拟相比,IFV 管外低温冷凝传热的相应实验或数值模拟需要进一步改进。因此,也提供了进一步研究IFV的建议。

更新日期:2021-06-04
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