Regasification of Liquefied Natural Gas Based on the Rankine Cycle: Thermodynamic Analysis

IF 0.5 Q4 ENGINEERING, CHEMICAL
V. A. Naletov, D. Zh. Abdillaeva, M. B. Glebov, A. Yu. Naletov
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引用次数: 0

Abstract

Options for organizing the regasification of liquefied natural gas (LNG) with the Rankine cycle are compared, with a view to more effective use of the cold energy of the liquefied gas. The comparison is based on exergy efficiency: the ratio of the total thermal inlet and outlet exergy for the system. In calculating the thermal characteristics of the flow, components of thermal exergy that don't change are discarded. ChemCad software is used for computational experiments. In organizing the regasification of liquefied natural gas (LNG) with the Rankine cycle, the heat source employed is seawater or flue gas at the output of turbine-based thermal power systems. When using environmental resources (seawater) at marine terminals, the efficiency of regasification proves higher than when using flue gas. However, the power generated in the Rankine cycle is 2.4 times greater when using flue gas. In addition, when using the residual heat of the flue gas, the heat pollution of the environment may be significantly reduced. All in all, the use of flue gas can be more economically viable.

Abstract Image

基于朗肯循环的液化天然气再气化:热力学分析
比较了用朗肯循环组织液化天然气(LNG)再气化的各种选择,以期更有效地利用液化天然气的冷能。比较是基于火用效率:系统的总热进口和出口火用的比率。在计算流动的热特性时,不变化的热能成分被丢弃。使用ChemCad软件进行计算实验。在利用朗肯循环组织液化天然气(LNG)再气化时,采用的热源是汽轮机火力发电系统输出的海水或烟气。在海洋码头使用环境资源(海水)时,再气化的效率高于使用烟气。然而,当使用烟气时,在朗肯循环中产生的功率是其2.4倍。此外,在利用烟气余热时,可显著减少对环境的热污染。总而言之,使用烟气在经济上更为可行。
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来源期刊
Coke and Chemistry
Coke and Chemistry ENGINEERING, CHEMICAL-
CiteScore
0.70
自引率
50.00%
发文量
36
期刊介绍: The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.
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