Applications & Pathways
Copula-based Operation Strategy for Green Hydrogen Production Systems Considering Coordination with Energy Storage Systems
Feb 2025
Publication
A recent consensus to achieve carbon neutrality is promoting interest in the use of hydrogen and management of its production system. Among the several types of hydrogen green hydrogen is of most interest which is produced using power generated from renewable energy sources (RES). However several challenges are encountered in the stable operation of green hydrogen production systems (GHPS) owing to the inherent intermittent and variables Read More
European Maritime Transport Environmental Report 2025
Jan 2025
Publication
This second edition of the European Maritime Transport Environmental Report (EMTER 2025) examines the progress made towards achieving Europe′s decarbonisation targets and environmental goals for the maritime sector while indicating the most important trends key challenges and opportunities. The objective was to update the indicators developed for the first report analyse new datasets and fill existing gaps to provide a data and knowledge-b Read More
Standalone and System-level Perspectives on Hydrogen-based Sustainable Aviation Fuel Pathways for Denmark
Mar 2025
Publication
Aviation is one of the most challenging sectors to electrify directly due to its high energy density demands. Hydrogen offers a pathway for indirect electrification in such sectors enabling sustainable aviation fuels (SAF) production when combined with a carbon source. SAF produced via methanol or Fischer-Tropsch (FT) synthesis (e-SAF) has higher volumetric density than hydrogen remains liquid under standard conditions and can be used as a Read More
An Economic and Environmental Assessment of Different Bus Powertrain Technologies in Public Transportation
Dec 2024
Publication
Hydrogen and electric buses are considered effective options for decarbonizing the public transportation sector positioning them as a leader in this transition. This study models the environmental and economic performances of a set of bus powertrain technologies considering a real case-study of suburban public transport in Italy and including fuel cell electric vehicles (FCEV) battery electric vehicles (BEV) biomethane-powered vehicles (CBM) natural gas (C Read More
Improved Sliding Mode Temperature Control of Hydrogen Fuel Cells for Multirotor Drones
Jan 2025
Publication
This paper investigates the temperature control problem in hydrogen fuel cells based on the improved sliding mode control method specifically within the context of multirotor drone applications. The study focuses on constructing a control-oriented nonlinear thermal model which serves as a foundation for the subsequent development of a practical temperature regulation approach. Initially a novel sliding mode control strategy is proposed which significa Read More
The Potential of Green Hydrogen and Power-to-X to Decarbonize the Fertilizer Industry in Jordan
Mar 2025
Publication
Considering economic and environmental aspects this study explored the potential of replacing urea imports in Jordan with local production utilizing green hydrogen considering agricultural land distribution fertilizer need and hydrogen demand. The analysis estimated the 2023 urea imports at approximately 13991.37 tons and evaluated the corresponding costs under various market scenarios. The cost of urea imports was projected to range between Read More
Machine Learning for Internal Combustion Engine Optimization with Hydrogen-Blended Fuels: A Literature Review
Mar 2025
Publication
This study explores the potential of hydrogen-enriched internal combustion engines (H2ICEs) as a sustainable alternative to fossil fuels. Hydrogen offers advantages such as high combustion efficiency and zero carbon emissions yet challenges related to NOx formation storage and specialized modifications persist. Machine learning (ML) techniques including artificial neural networks (ANNs) and XGBoost demonstrate strong predictive capabilities in opt Read More
Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks
Mar 2025
Publication
Liquid hydrogen (LH2) is a promising energy carrier to decrease the climate impact of aviation. However the inevitable formation of hydrogen boil-off gas (BOG) is a main drawback of LH2. As the venting of BOG reduces the overall efficiency and implies a safety risk at the airport means for capturing and re-using should be implemented. Metal hydrides (MHs) offer promising approaches for BOG recovery as they can directly absorb the BOG at ambient Read More
Holistic View to Decarbonising Cruise Ships with a Combination of Energy Saving Technologies and Hydrogen as Fuel
Mar 2025
Publication
Cruise ship decarbonisation was studied on a Mediterranean cruise profile. The analysis focused on ship energy flows fuel consumption carbon emissions ship CII and EEDI. A combination of technologies for reducing ship fuel consumption was simulated before introducing hydrogen fueled machinery for the ship. The studied technologies included ultrasound antifouling shore power battery hybrid machinery waste heat recovery and air lubrication. Their appl Read More
Optimisation of Green Hydrogen Production for Hard-to-abate Industries: An Italian Case Study Considering National Incentives
Mar 2025
Publication
Green hydrogen has emerged as a promising energy vector for the decarbonisation of heavy industry. The EU and national governments have recently introduced incentives to address the high costs of green hydrogen production and accelerate the economic development of hydrogen. This study investigates the local production of green hydrogen to decarbonise the high-temperature process heat demand of a heavy industry located in Italy. The hydrog Read More
Energy Storage Systems for Photovoltaic and Wind Systems: A Review
May 2023
Publication
The study provides a study on energy storage technologies for photovoltaic and wind systems in response to the growing demand for low-carbon transportation. Energy storage systems (ESSs) have become an emerging area of renewed interest as a critical factor in renewable energy systems. The technology choice depends essentially on system requirements cost and performance characteristics. Common types of ESSs for renewable ener Read More
Hydrogen-Based Solutions for Enhancing Frequency Stability in Renewable Energy-Integrated Power Systems
Mar 2025
Publication
With the increasing adoption of renewable energy sources such as solar and wind power it is essential to achieve carbon neutrality. However several shortcomings including their intermittence pose significant challenges to the stability of the electrical grid. This study explores hydrogen-based technologies such as fuel cells and water electrolysis systems as an effective solution to improve frequency stability and address the problems of power grid rel Read More
The Role of Hydrogen in the Ecological Benefits of Ultra Low Sulphur Diesel Production and Use: An LCA Benchmark
Apr 2019
Publication
Desulphurization of oil-based fuels is common practice to mitigate the ecological burden to ecosystems and human health of SOx emissions. In many countries fuels for vehicles are restricted to 10 ppm sulphur. For marine fuels low sulphur contents are under discussion. The environmental impact of desulphurization processes is however quite high: (1) The main current source for industrial hydrogen is Steam Methane Reforming (SMR) with a r Read More
Providing the Transport Sector in Europe with Fossil Free Energy - A Model-based Analysis under Consideration of the MENA Region
Mar 2025
Publication
For reaching the European greenhouse gas emission targets the phase-in of alternative technologies and energy carriers is crucial for all sectors. For the transport sector synthetic fuels are–next to electromobility–a promising option especially for long-distance shipping and air transport. Within this context the import of synthetic fuels from the Middle East and Northern Africa (MENA) region seems attractive due to low costs for renewable electricity in this Read More
Technical–Economic Analysis for Ammonia Ocean Transportation Using an Ammonia-Fueled Carrier
Jan 2024
Publication
This study performed a technical–economic analysis for ship-based ammonia transportation to investigate the feasibility of international ammonia transportation. Ammonia is considered to be a vital hydrogen carrier so the international trade in ammonia by ship will considerably increase in the future. This study proposed three scenarios for transporting ammonia from the USA Saudi Arabia and Australia to South Korea and employed an 84000 Read More
Liquefied Hydrogen, Ammonia and Liquid Organic Hydrogen Carriers for Harbour-to-harbour Hydrogen Transport: A Sensitivity Study
Jul 2024
Publication
Hydrogen is commonly perceived as the key player in the transition towards a low-carbon future. Nevertheless H2 low energy density hinders its easy storage and transportation. To address this issue different alternatives (liquefied hydrogen ammonia and liquid organic hydrogen carriers) are explored as hydrogen vectors. The techno-economic assessment of H2 transport through these carriers is strongly dependent on the basis of design adopted such that i Read More
Liquid Hydrogen Application for Aero-Engine More-Electrical System: Current Status, Challenges and Future Prospects
Mar 2025
Publication
The integration of more-electric technologies into aero-engines has revolutionized their multi-power architectures substantially improving system maintainability and operational reliability. This advancement has established more-electric systems as a cornerstone of modern aerospace electrification research. Concurrently liquid hydrogen (LH2) emerges as a transformative solution for next-generation power generation systems particularly in e Read More
Strategies to Increase Hydrogen Energy Share of a Dual-Fuel Hydrogen–Kerosene Engine for Sustainable General Aviation
Mar 2025
Publication
Reducing CO2 emissions in general aviation is a critical challenge where battery electric and fuel cell technologies face limitations in energy density cost and robustness. As a result hydrogen (H2) dual-fuel combustion is a promising alternative but its practical implementation is constrained by abnormal combustion phenomena such as knocking and pre-ignition which limit the achievable H2 energy share. In response to these challenges this paper focuses on s Read More
Multi-Objective Optimal Energy Management Strategy for Grid-Interactive Hydrogen Refueling Stations in Rural Areas
Mar 2025
Publication
The transportation sector is a significant contributor to global carbon emissions thus necessitating a transition toward renewable energy sources (RESs) and electric vehicles (EVs). Among EV technologies fuel-cell EVs (FCEVs) offer distinct advantages in terms of refueling time and operational efficiency thus rendering them a promising solution for sustainable transportation. Nevertheless the integration of FCEVs in rural areas poses challenges due to t Read More
Economic Study of Hybrid Power System Using Boil-off Hydrogen for Liquid Hydrogen Carriers
Mar 2024
Publication
This study presents a hybrid power system comprising a fuel cell (FC) and a lithium-ion battery (LIB) for liquid hydrogen (LH2) carriers which is expected to increase globally due to the production cost gap of green hydrogen between renewable-rich and renewable-poor countries. The LH2 carrier has a key challenge in handling the inevitably considerable boil-off hydrogen (BOH). As a target ship of a 50000 m3 LH2 carrier with a boil-off rate (BOR) of 0 Read More
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