Optimal integration of a low-carbon energy system – A circular hydrogen economy perspective

Khaligh, Vahid; Ghezelbash, Azam; Akhtar, Malik Sajawal; Zarei, Mohammadamin; Liu, Jay; Maravelias, Christos T.

doi:10.1016/j.enconman.2023.117354

Cited by 20 publications

(4 citation statements)

References 41 publications

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“…4−6 However, the regional inconsistency between renewable energy supply and demand hinders the commercialization of renewable energy. 7,8 To function as an energy source, a stable energy carrier is required for long-term energy storage and long-distance transport. 9 Hydrogen is a promising candidate as an energy carrier because of its cleanliness, abundance, and high gravimetric energy density (120 MJ/kg) compared to other energy sources.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In recent decades, energy consumption has increased with the population. However, because most energy is obtained from fossil fuels, global warming potential (GWP) and fossil resource scarcity (FRS) have become important global topics. − Accordingly, research on renewable energy is being actively conducted as an alternative energy source. − However, the regional inconsistency between renewable energy supply and demand hinders the commercialization of renewable energy. , To function as an energy source, a stable energy carrier is required for long-term energy storage and long-distance transport …”

Section: Introductionmentioning

confidence: 99%

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A System-Level Analysis for Long-Distance Hydrogen Transport Using Liquid Organic Hydrogen Carriers (LOHCs): A Case Study in Australia–Korea

Ahn,

Sohn,

Liu

et al. 2024

ACS Sustainable Chem. Eng.

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The toluene (TOL)–methylcyclohexane (MCH) system is one of the viable solutions because of its high stability and high hydrogen storage capacity (6.2%). However, the high volatilities of TOL and MCH and the accumulative byproducts make it difficult to transport hydrogen. Considering these limitations, we developed a new strategy introducing an extraction column and pressure swing adsorption with heat integration to reduce the required energy utilities. Furthermore, a comprehensive system-level analysis was conducted through an application example of the transport of hydrogen from Australia to Korea. The minimum transport cost of hydrogen was determined to be $2.17/kg-H2 via techno-economic analysis. Sensitivity and uncertainty analyses revealed the influence of the economic and process parameters. Finally, a life cycle assessment was conducted to compare the environmental impact (EI) of each part. Although dehydrogenation is more energy-demanding than hydrogenation, hydrogenation has larger EIs for some factors including fossil resource scarcity (13% larger) and water consumption (746% larger), due to the toluene and hydrogen makeup. Furthermore, we compared changes in the EIs in the energy sources. This study can provide insights into the optimization and decision-making of hydrogen supply chains to revitalize the hydrogen economy.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A System-Level Analysis for Long-Distance Hydrogen Transport Using Liquid Organic Hydrogen Carriers (LOHCs): A Case Study in Australia–Korea

Ahn,

Sohn,

Liu

et al. 2024

ACS Sustainable Chem. Eng.

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“…Owing to the current emissions of anthropogenic GHGs, the global mean temperature is expected to increase by 1.5 °C by 2040. 7 This is mostly due to the rise in energy demand associated with a growth in the global economy of 3.7% in 2018, which in turn increased CO 2 emissions by 1.7%. Taking that into account, coal has continued to play a declining role in the global energy portfolio.…”

Section: ■ Introductionmentioning

confidence: 99%

“…This report claims that the emission of CO 2 from coal combustion accounts for an increase of more than 0.3 °C. Owing to the current emissions of anthropogenic GHGs, the global mean temperature is expected to increase by 1.5 °C by 2040 . This is mostly due to the rise in energy demand associated with a growth in the global economy of 3.7% in 2018, which in turn increased CO 2 emissions by 1.7%.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Assessment of Amine-Based CO₂ Capture Process at Coal-Fired Power Plants: Uncertainty Analysis

Zarei,

Cherif,

Khaligh

et al. 2023

ACS Sustainable Chem. Eng.

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This paper provides a techno-economic analysis of carbon capture technologies for coal-fired power plants, which are significant contributors to greenhouse gas emissions. The study evaluates the strengths and weaknesses of different technologies, including supercritical and ultrasupercritical power plants, as well as different capacities of 1000 MW, 800 MW, and 500 MW. The analysis focuses on amine-based postcombustion as a carbon capture system, which is widely used in industries. Additionally, the study compares the cost and performance of retrofitting existing power plants with carbon capture systems of varying ages. Finally, the analysis includes sensitivity and probabilistic uncertainty analyses to assess the impact of uncertainties on the results. The findings reveal that carbon capture is still necessary even in ultrasupercritical plants, and that the capacity factor has the greatest impact on the levelized cost of energy, while the discount rate has the lowest impact. The probabilistic uncertainty analysis indicates that deterministic estimates may underestimate the LCOE and carbon capture costs by up to 40%, underscoring the importance of considering uncertainties in decision-making processes.

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Techno-Economic Analysis for Centralized GH2 Power Systems

Hayati,

Motallebi Azar,

Aminlou

et al. 2024

Green Energy and Technology

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Optimal integration of a low-carbon energy system – A circular hydrogen economy perspective

Cited by 20 publications

References 41 publications

A System-Level Analysis for Long-Distance Hydrogen Transport Using Liquid Organic Hydrogen Carriers (LOHCs): A Case Study in Australia–Korea

A System-Level Analysis for Long-Distance Hydrogen Transport Using Liquid Organic Hydrogen Carriers (LOHCs): A Case Study in Australia–Korea

Techno-Economic Assessment of Amine-Based CO₂ Capture Process at Coal-Fired Power Plants: Uncertainty Analysis

Techno-Economic Analysis for Centralized GH2 Power Systems

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Optimal integration of a low-carbon energy system – A circular hydrogen economy perspective

Cited by 20 publications

References 41 publications

A System-Level Analysis for Long-Distance Hydrogen Transport Using Liquid Organic Hydrogen Carriers (LOHCs): A Case Study in Australia–Korea

A System-Level Analysis for Long-Distance Hydrogen Transport Using Liquid Organic Hydrogen Carriers (LOHCs): A Case Study in Australia–Korea

Techno-Economic Assessment of Amine-Based CO2 Capture Process at Coal-Fired Power Plants: Uncertainty Analysis

Techno-Economic Analysis for Centralized GH2 Power Systems

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Product

Resources

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Techno-Economic Assessment of Amine-Based CO₂ Capture Process at Coal-Fired Power Plants: Uncertainty Analysis