Analysis of different combined cycles and working fluids for LNG exergy recovery during regasification

被引：37

作者：

Badami, Marco ^{[1
]}

Carlos Bruno, Juan ^{[2
]}

Coronas, Alberto ^{[2
]}

Fambri, Gabriele ^{[1
]}

机构：

[1] Politecn Torino, Energy Dept, Cso Duca Abruzzi 24, I-10129 Turin, Italy

[2] Univ Rovira & Virgili, Dept Mech Engn, Tarragona, Spain

来源：

ENERGY | 2018年 / 159卷

关键词：

Liquefied Natural Gas; Regasification; Exergy recovery; Rankine Cycle; Power generation; LIQUEFIED NATURAL-GAS; ORGANIC RANKINE-CYCLE; TEMPERATURE WASTE HEAT; COLD ENERGY RECOVERY; THERMODYNAMIC ANALYSIS; POWER CYCLE; THERMAL PERFORMANCE; CRYOGENIC EXERGY; SOLAR-ENERGY; SYSTEM;

D O I：

10.1016/j.energy.2018.06.100

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

It has been estimated that the world's consumption of Liquefied Natural Gas (LNG) will increase significantly over the next 20 years, thus making exergy recovery from the regasification process a fundamental issue. When LNG is regasified in order to distribute the fuel through a pipeline network, a large amount of exergy is released. Three combined cycle schemes for energy generation have been analysed in this paper: the first one is a direct expansion cycle, combined with a Rankine cycle, the second one presents a double expansion with reheating and a recovery heat exchanger, and the last one shows two parallel Rankine cycles working under different turbine pressures. The performance of the three cycles has been compared, and the effects of using working fluids with different characteristics have been analysed in detail. Twelve working fluids were selected, according to their thermodynamic, ambient and safety proprieties. The working pressure and temperature that maximise the specific work have been found for each cycle and fluid. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：373 / 384

页数：12

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