Cold exergy recovery during LNG regasification through a closed Brayton cycle

Gómez, Manuel Romero; García, Ramón Ferreiro; Gómez, Javier; Catoira, Alberto de Miguel

doi:10.1504/ijex.2014.062921

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…Later on, LNG is immediately loaded into their maritime transport carriers by using LNG loading arms or compiled in holding tanks. The carriers of LNG are generally categorized based on their boil-off gas (BOG) presence, propulsion systems and containment types, and capacity of reliquefication unit [33,34]. The currently importing facilities and regasification plants consist basically of the supporting utilities, LNG storing tanks, and the regasification unit.…”

Section: Lng Process Chainmentioning

confidence: 99%

A Novel Hybrid Life Cycle Assessment Approach to Air Emissions and Human Health Impacts of Liquefied Natural Gas Supply Chain

et al. 2021

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Global interest in LNG products and supply chains is growing, and demand continues to rise. As a clean energy source, LNG can nevertheless emit air pollutants, albeit at a lower level than transitional energy sources. An LNG plant capable of producing up to 126 MMTA was successfully developed and simulated in this study. A hybrid life cycle assessment model was developed to examine the social and human health impacts of the LNG supply chain’s environmental air emission formation. The Multiregional Input–Output (MRIO) database, the Aspen HYSYS model, and the LNG Maritime Transportation Emission Quantification Tool are the key sources of information for this extensive novel study. We began our research by grouping environmental emissions sources according to the participation of each stage in the supply chain. The MDEA Sweetening plant, LNG loading (export terminal), and LNG transportation stages were discovered to have the maximum air emissions. The midpoint air emissions data estimated each stage’s CO2-eq, NOx-eq, and PM2.5-eq emissions per unit LNG generated. According to the midpoint analysis results, the LNG loading terminal has the most considerable normalized CO2-eq and NOx-eq emission contribution across all LNG supply chain stages. Furthermore, the most incredible intensity value for normalized PM2.5-eq was recorded in the SRU and TGTU units. Following the midpoint results, the social human health impact findings were calculated using ReCiPe 2016 characterization factors to quantify the daily loss of life associated with the LNG process chain. SRU and TGTU units have the most significant social human health impact, followed by LNG loading (export terminal) with about 7409.0 and 1203.9 (DALY/million Ton LNG produced annually), respectively. Natural gas extraction and NGL recovery and fractionation units are the lowest for social human health consequences.

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Section: Lng Process Chainmentioning

confidence: 99%

A Novel Hybrid Life Cycle Assessment Approach to Air Emissions and Human Health Impacts of Liquefied Natural Gas Supply Chain

et al. 2021

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“…[ 12 ] Thus, the Brayton cycle has a promising prospect. Gómez et al [ 13 ] proposed a novel helium‐closed Brayton cycle with high efficiency for LNG regasification, with thermal efficiency of 47.5% and exergy efficiency of 59.08%. In order to achieve efficient power generation and low‐cost carbon capture, Liang et al [ 14 ] reported an all‐oxygen combustion NG power plant with the two‐stage power generation subsystem, which was composed of ORC and S‐CO 2 Brayton cycle; it could generate 424.1 MW and achieve a thermal efficiency of 52.25%.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Optimization of a Novel Combined Cooling, Heating, and Power System‐Integrated Rankine Cycle and Brayton Cycle Utilizing the Liquified Natural Gas Cold Energy

et al. 2022

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In recent years, the efficient utilization of energy has become a hot issue in scientific research. Society needs sustainable development. Fossil energy will gradually withdraw from the stage of energy utilization in the future, and the significance of clean energy becomes increasingly prominent. Natural gas (NG) stands out for its superior characteristics among many clean energy sources. It is generally accepted as the cleanest fossil energy source in the world, [1] which has advantages of high calorific value and economic and environmental protection. NG emits very little greenhouse gas during the combustion process, and its application can greatly reduce the global greenhouse effect. NG is liquid state when stored and when in short distance transported, liquefied natural gas (LNG) is colorless, nontoxic, odorless and noncorrosive, and is 600 times the volume of NG. [2,3] The temperature is À162 °C at 101.325 kPa, LNG will be gasified to more than 25 °C before being transported to the gas user terminal, and the huge cold energy will be released simultaneously. Utilizing this part of energy rationally will produce excellent benefits.At present, LNG cold energy is mainly used as a cold source and applied to the combined power generation, refrigeration, and heating cycle engineering fields with thermal energy (industrial waste heat, solar energy, geothermal energy, etc.) together. In the past decade, there have been extensive in-depth researches conducted in this direction by many scholars. Lee et al. [4] designed and

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“…In LNG regasification methods using BC (Brayton cycles), the cold energy is used to cool the gas to cryogenic temperatures at the compressor inlet [23]. Some authors propose combined cycles power plant-based strategies.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of a novel power plant with LNG (liquefied natural gas) cold exergy exploitation and CO2 capture

Gómez

González

2016

Energy

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Cold exergy recovery during LNG regasification through a closed Brayton cycle

Cited by 8 publications

References 16 publications

A Novel Hybrid Life Cycle Assessment Approach to Air Emissions and Human Health Impacts of Liquefied Natural Gas Supply Chain

A Novel Hybrid Life Cycle Assessment Approach to Air Emissions and Human Health Impacts of Liquefied Natural Gas Supply Chain

Performance Analysis and Optimization of a Novel Combined Cooling, Heating, and Power System‐Integrated Rankine Cycle and Brayton Cycle Utilizing the Liquified Natural Gas Cold Energy

Thermodynamic analysis of a novel power plant with LNG (liquefied natural gas) cold exergy exploitation and CO2 capture

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