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A Complete Assessment of the Emission Performance of an SI Engine Fueled with Methanol, Methane and Hydrogen
Feb 2024
Publication
This study explores the potentiality of low/zero carbon fuels such as methanol methane and hydrogen for motor applications to pursue the goal of energy security and environmental sustainability. An experimental investigation was performed on a spark ignition engine equipped with both a port fuel and a direct injection system. Liquid fuels were injected into the intake manifold to benefit from a homogeneous charge formation. Gaseous fuels were injecte Read More
Utilization of Hydrogen Fuel in Reheating Furnace and its Effect on Oxide Scale Formation of Low-carbon Steels
Nov 2024
Publication
The transition from fossil-based fuel to hydrogen combustion in steel reheating furnaces is a possible way to decrease the process-originated CO2 emissions significantly. This potential change alters the furnace gas atmo sphere’s composition impacting the oxide scale formation of the slab surface. Dynamic heating tests are per formed for three low-carbon steels using different simulated combustion atmospheres including natural gas coke oven gas a Read More
Decarbonising International Shipping - A Life Cycle Perspective on Alternative Fuel Options
Nov 2023
Publication
This study aimed to compare hydrogen ammonia methanol and waste-derived biofuels as shipping fuels using life cycle assessment to establish what potential they have to contribute to the shipping industry’s 100% greenhouse gas emission reduction target. A novel approach was taken where the greenhouse gas emissions associated with one year of global shipping fleet operations was used as a common unit for comparison therefore allow Read More
Marine Renewable-Driven Green Hydrogen Production Toward a Sustainable Solution and a Low-carbon Future in Morocco
May 2024
Publication
Oceanic energy sources notably offshore wind and wave power present a significant opportunity to generate green hydrogen through water electrolysis. This approach allows for offshore hydrogen production which can be efficiently transported through existing pipelines and stored in various forms offering a versatile solution to tackle the intermittency of renewable energy sources and potentially revolutionize the entire electrical grid infrastructure. Thi Read More
Utilization of Hydrogen and Methane as Energy Carriers with Exhaust Gas Recirculation for Sustainable Diesel Engines
May 2024
Publication
Hydrogen and methane as secondary fuels in diesel engines can be promising solutions to meet energy demand. The current study investigated the effect of the specialty gases of different compositions on diesel engine performance and exhaust gases. Four gases with various compositions of exhaust gas recirculation (Carbon monoxide Carbon dioxide and Nitrogen) and fuels (Hydrogen and Methane) were used at various mass flow rates of 10 20 a Read More
Hydrogen in Burners: Economic and Environmental Implications
Nov 2024
Publication
For centuries fossil fuels have been the primary energy source but their unchecked use has led to significant environmental and economic challenges that now shape the global energy landscape. The combustion of these fuels releases greenhouse gases which are critical contributors to the acceleration of climate change resulting in severe consequences for both the environment and human health. Therefore this article examines the potential of hyd Read More
A Data-Driven Scheduling Approach for Hydrogen Penetrated Energy System Using LSTM Network
Nov 2019
Publication
Intra-day control and scheduling of energy systems require high-speed computation and strong robustness. Conventional mathematical driven approaches usually require high computation resources and have difficulty handling system uncertainties. This paper proposes two data-driven scheduling approaches for hydrogen penetrated energy system (HPES) operational scheduling. The two data-driven approaches learn the historical optimization results calcu Read More
Uncovering an Emerging Policy Direction for Australian Energy and Future Fuels Using a "Participatory Decision-Making" Framework
Aug 2024
Publication
Introduction: An online deliberative engagement process was undertaken with members of the general public to understand what they value or would like to change about the energy system within the broader context of decarbonizing Australia's energy networks identifying a role for future fuels (hydrogen and biogas). Citizens developed a set of principles that could guide Australia's path toward a low-carbon energy future reflecting on expectations they Read More
The Role of Hydrogen as Enabler of Industrial Port Area Decarbonoization
Nov 2023
Publication
To meet environmental goals while maintaining economic competitiveness worldwide ports have increased the amount of renewable energy production and have focused in optimizing performances and energy efficiency. However carbon-neutral operation of industrial port areas (IPA) is challenging and requires the decarbonization of industrial processes and heavy transport systems. This study proposes a comprehensive review of decarbon ization strateg Read More
Green Hydrogen Production by Water Electrolysis: Current Status and Challenges
Apr 2024
Publication
The scientific and industrial communities worldwide have recently achieved impressive technical advances in developing innovative electrocatalysts and electrolysers for water and seawater splitting. The viability of water electrolysis for commercial applications however remains elusive and the key barriers are durability cost performance materials manufacturing and system simplicity especially with regard to running on practical water sources like seawa Read More
Probabilistic Analysis of Electricity Production from a Photovoltaic–Wind Energy Mix for Sustainable Transport Needs
Nov 2024
Publication
Renewable Energy Sources (RESs) are characterized by high unevenness cyclicality and seasonality of energy production. Due to the trends in the production of electricity itself and the utilization of hydrogen distributed generation systems are preferred. They can be connected to the energy distribution network or operate without its participation (off-grid). However in both cases such distributed energy sources should be balanced in terms of power generatio Read More
The Case of Renewable Methane by and with Green Hydrogen as the Storage and Transport Medium for Intermittent Wind and Solar PV Energy
May 2024
Publication
Long-duration energy storage is the key challenge facing renewable energy transition in the future of well over 50% and up to 75% of primary energy supply with intermittent solar and wind electricity while up to 25% would come from biomass which requires traditional type storage. To this end chemical energy storage at grid scale in the form of fuel appears to be the ideal option for wind and solar power. Renewable hydrogen is a much-considered fuel al Read More
Model-based Analysis and Optimization of Pressurised Alkaline Water Electrolysis Powered by Renewable Energy
Jul 2023
Publication
Alkaline water electrolysis is a key technology for large-scale hydrogen production. In this process safety and efficiency are among the most essential requirements. Hence optimization strategies must consider both aspects. While experimental optimization studies are the most accurate solution model-based approaches are more cost and time-efficient. However validated process models are needed which consider all important influences and ef Read More
Critical Challenges in Biohydrogen Production Processes from the Organic Feedstocks
Aug 2020
Publication
The ever-increasing world energy demand drives the need for new and sustainable renewable fuel to mitigate problems associated with greenhouse gas emissions such as climate change. This helps in the development toward decarbonisation. Thus in recent years hydrogen has been seen as a promising candidate in global renewable energy agendas where the production of biohydrogen gains more attention compared with fossil-based hydrogen. I Read More
The Green Hydrogen Revolution
Jul 2023
Publication
Green hydrogen is considered the most suitable choice for the future energy market both as energy storage media energy vector and fuel for transportation industry and other applications. In the last twenty years increasing efforts have been dedicated to green hydrogen technologies development but still today a number of issues are claimed in justifying the delay in its large scale application and the star vation of its market. Moreover some new questions s Read More
Recent Progress on Rational Design of Catalysts for Fermentative Hydrogen Production
May 2022
Publication
The increasingly severe energy crisis has strengthened the determination todevelop environmentally friendly energy. And hydrogen has emerged as a candi-date for clean energy. Among many hydrogen generation methods biohydrogenstands out due to its environmental sustainability simple operating environ-ment and cost advantages. This review focuses on the rational design of catalystsfor fermentative hydrogen production. The principles of microbi Read More
Life Cycle Net Energy Assessment of Sustainable H2 Production and Hydrogenation of Chemicals in a Coupled Photoelectrochemical Device
Feb 2023
Publication
Green hydrogen has been identified as a critical enabler in the global transition to sustainable energy and decarbonized society but it is still not economically competitive compared to fossil-fuel-based hydrogen. To overcome this limitation we propose to couple photoelectrochemical (PEC) water splitting with the hydrogenation of chemicals. Here we evaluate the potential of coproducing hydrogen and methyl succinic acid (MSA) by coupling the hydrogenati Read More
Green Hydrogen Generation in Alkaline Solution Using Electrodeposited Ni-Co-nano-graphene Thin Film Cathode
Apr 2024
Publication
Green hydrogen generation technologies are currently the most pressing worldwide issues ofering promising alternatives to existing fossil fuels that endanger the globe with growing global warming. The current research focuses on the creation of green hydrogen in alkaline electrolytes utilizing a Ni-Co-nano-graphene thin flm cathode with a low overvoltage. The recommended conditions for creating the target cathode were studied by electrodepositin Read More
Hydrogen in the Strategies of the European Union Member States
Jan 2021
Publication
Energy and environmental challenges are two key issues related to the sustainable development of the Earth. Fossil fuels (oil coal and natural gas) still supply more than 85% of world energy consumption. Several nations around the globe are striving to provide access to clean and sustainable energy by 2030 (Hostettler et al. 2015). When the Paris Agreement entered into force in 2016 many countries have recently announced serious commitments to si Read More
The Emerging Role of Artificial Intelligence in Enhancing Energy Efficiency and Reducing GHG Emissions in Transport Systems
Dec 2024
Publication
The global transport sector a significant contributor to energy consumption and greenhouse gas (GHG) emissions requires innovative solutions to meet sustainability goals. Artificial intelligence (AI) has emerged as a transformative technology offering opportunities to enhance energy efficiency and reduce GHG emissions in transport systems. This study provides a comprehensive review of AI’s role in optimizing vehicle energy management traffic flow Read More
Techno-economic and Environmental Assessment of Renewable Hydrogen Import Routes from Overseas in 2030
Dec 2024
Publication
Converting renewable electricity via water electrolysis into green hydrogen and hydrogen-based products will shape a global trade in power-to-x (PtX) products. The European Union's renewable hydrogen import target of 10 million tonnes by 2030 reflects the urgent need for PtX imports by sea to early high-demand countries like Germany. This study evaluates the cost efficiency and greenhouse gas (GHG) emissions of four hydrogen carrier ship import Read More
A Rigorous Optimization Method for Long-term Multi-stage Investment Planning: Integration of Hydrogen into a Decentralized Multi-energy System
Dec 2024
Publication
Thoroughly assessing future energy systems requires examining both their end states and the paths leading to them. Employing dynamic investment or multi-stage optimization models is crucial for this analysis. However solving these optimization problems becomes increasingly challenging due to their long time horizons – often spanning several decades – and their dynamic nature. While simplifications like aggregations are often used to expedite solvi Read More
Exploring the State-of-operation of Proton Exchange Membrane Electrolyzers
Dec 2024
Publication
Proton exchange membrane electrolytic cells (PEMECs) have the potential to provide green Hydrogen as a sustainable energy source. PEMEC has already been applied at an industrially relevant scale. However it still faces challenges regarding reliability and durability especially in long-term operation. This review emphasizes the need for standardizing the cell configuration the testing protocols and the evaluation procedures to attain the optimum operation Read More
Renewable Hydrogen in Industrial Production: A Bibliometric Analysis of Current and Future Applications
Dec 2024
Publication
Renewable hydrogen is widely considered a key technology to achieve net zero emissions in industrial production processes. This paper presents a structured bibliometric analysis examining current and future applications of hydrogen as feedstock and fuel across industries quantifying demand for different industrial processes and identifying greenhouse gas emissions reduction potential against the context of current fossil-based practices. The findings highligh Read More
Large-scale Production of Green Hydrogen from Solar Energy in Australia: Operation and Control of a Multi-unit PEM Electrolyser System
Dec 2024
Publication
Large-scale production of hydrogen using clean electricity from renewable energy sources (RESs) is gaining more momentum in attempts to foster the growth of the nascent hydrogen energy market. However the inherited intermittency of RESs constitutes a significant challenge for the reliable and economic operation of electrolysers and consequently the overall hydrogen production plant. This paper proposes a power allocation control strategy to reg Read More
Numerical Modeling for Analysis and Improvement of Hydrogen Refueling Process for Heavy-duty Vehicles
Dec 2024
Publication
This paper presents the development validation and application of a numerical model to simulate the process of refueling hydrogen-powerd heavy-duty vehicles with a cascade hydrohen refueling station design. The model is implemented and validated using experimental data from SAE J2601. The link between the average pressure ramp (APRR) and flow rate which is responsible for the dynamic evolution of the refueling process was analyzed. V Read More
Local and Global Sensitivity Analysis for Railway Upgrading Between Hydrogen Fuel Cell and Electrification
Nov 2024
Publication
In the field of rail transit the UK Department of Transport stated that it will realize a comprehensive transformation of UK railways by 2050 abandoning traditional diesel trains and upgrading them to new environmentally friendly trains. The current mainstream upgrade methods are electrification and hydrogen fuel cells. Comprehensive upgrades are costly and choosing the optimal upgrade method for trams and mainline railways is critical. Wit Read More
Enhancing the Risk-oriented Participation of Wind Power Plants in Day-ahead Balancing, and Hydrogen Markets with Shared Multi-energy Storage Systems
Dec 2024
Publication
The increasing demand for renewable energy sources (RES) to address environmental concerns and reduce fossil fuel dependency highlights the need for efficient energy storage and balancing mechanisms to manage RES output uncertainty. However providing dedicated storage units to RES owners is often infeasible. Additionally the growing interest in hydrogen utilization complicates optimal decision-making for multi-energy systems. To tackle these Read More
Harnessing Enhanced Solar Efficiency for Green Hydrogen Production: A Comparative Analysis of PV and PV-T Systems
Dec 2024
Publication
Green hydrogen a critical element in the shift towards sustainable energy is traditionally produced by electrolysis powered by solar photovoltaic (PV) systems. This research explores the potential of underexploited photovoltaic thermal (PV-T) systems for efficient green hydrogen generation. This paper compares this advanced technology performance and economic viability against conventional PV setups. This paper uses TRNSYS simulation software to analyze Read More
Recent Developments in Sensor Technologies for Enabling the Hydrogen Economy
Dec 2023
Publication
Efforts to create a sustainable hydrogen economy are gaining momentum as governments all over the world are investing in hydrogen production storage distribution and delivery technologies to develop a hydrogen infrastructure. This involves transporting hydrogen in gaseous or liquid form or using carrier gases such as methane ammonia or mixtures of methane and hydrogen. Hydrogen is a colorless odorless gas and can easily leak into the atmosp Read More
An Updated Review of Recent Applications and Perspectives of Hydrogen Production from Biomass by Fermentation: A Comprehensive Analysis
Mar 2024
Publication
Dayana Nascimento Dari,
Isabelly Silveira Freitas,
Francisco Izaias da Silva Aires,
Rafael Leandro Fernandes Melo,
Kaiany Moreira dos Santos,
Patrick da Silva Sousa,
Paulo Gonçalves de Sousa Junior,
Antônio Luthierre Gama Cavalcante,
Francisco Simão Neto,
Jessica Lopes da Silva,
Érico Carlos de Castro,
Valdilane Santos Alexandre,
Ana M. da S. Lima,
Juliana de França Serpa,
Maria C. M. de Souza and
José C. S. dos Santos
Fermentation is an oxygen-free biological process that produces hydrogen a clean renewable energy source with the potential to power a low-carbon economy. Bibliometric analysis is crucial in academic research to evaluate scientific production identify trends and contributors and map the development of a field providing valuable information to guide researchers and promote scientific innovation. This review provides an advanced bibliometric analy Read More
Hydrogen, Medium-range Airplane Design Optimisation for Minimal Global Warming Impact
May 2024
Publication
This paper focuses on the conceptual design optimization of liquid hydrogen aircraft and their performance in terms of climate impact cash operating cost and energy consumption. An automated multidisciplinary design framework for kerosene-powered aircraft is extended to design liquid hydrogen-powered aircraft at a conceptual level. A hydrogen tank is integrated into the aft section of the fuselage increasing the operating empty mass and wetted a Read More
Eye-readable Sensors for Intuitive Hydrogen Monitoring
Apr 2024
Publication
Hydrogen energy is a cornerstone of the future climate-neutral economy. Yet as undetected leaks easily generate dangerous atmospheres sensing systems must timely detect accumulated hydrogen to prevent ignitions and explosions. Eye-readable sensors (ERSs) displaying intuitive readouts promise to guarantee safe use and universal access to hydrogen-based technology. This review highlights the impact of reversible ERSs in hydrogen moni tori Read More
Sustainable Integration of Green Hydrogen in Renewable Energy Systems for Residential and EV Applications
Jan 2024
Publication
The surge in interest surrounding renewable energy stems from concerns regarding pollution and the finite supply ofnonrenewable resources. Solar PV and wind hybrid renewable energy systems (HRES) are increasingly recognized as practicaland cost-effective solutions particularly in remote areas. However the intermittent nature of solar and wind power presents achallenge. To address this incorporating a hydrogen source into the system has been propo Read More
Efficient Solar-powered PEM Electrolysis for Sustainable Hydrogen Production: An Integrated Approach
Apr 2024
Publication
The coupling of photovoltaics (PVs) and PEM water electrolyzers (PEMWE) is a promising method for generating hydrogen from a renewable energy source. While direct coupling is feasible the variability of solar radiation presents challenges in efcient sizing. This study proposes an innovative energy management strategy that ensures a stable hydrogen production rate even with fuctuating solar irradiation. By integrating battery-assisted hydrogen productio Read More
Experimental Investigation of Hydrogen Enriched Natural Gas Combustion with a Focus on Nitrogen Oxide Formation on a Semi-industrial Scale
Mar 2024
Publication
Combustion of hydrogen-enriched natural gas is a valuable short-term strategy for reducing CO2 emissions from high temperature industrial heating. This paper presents several experiments on combustion characteristics and the formation of nitrogen oxides. The experiments included hydrogen contents up to 100% and fuel heat inputs up to 75 kW. Water-cooled lances were used to influence the furnace temperature. The analysis includes the distributio Read More
Modeling of Hydrogen Dispersion, Jet Fires and Explosions Caused by Hydrogen Pipeline Leakage
Dec 2023
Publication
Accidental hydrogen releases from pipelines pose significant risks particularly with the expanding deployment of hydrogen infrastructure. Despite this there has been a lack of thorough investigation into hydrogen leakage from pipelines especially under complex real-world conditions. This study addresses this gap by modeling hydrogen gas dispersion jet fires and explosions based on practical scenarios. Various factors influencing accident consequences suc Read More
Research on Characteristics of Hydrogen Dynamic Leakage and Combustion at High Pressure
Apr 2023
Publication
Hydrogen is promoted as an alternative energy given the global energy shortage and environmental pollution. A scientific basiscan be provided for the safe use and emergency treatment of hydrogen based on hydrogen leakage and combustion behavior.This study examined the stagnation parameters of dynamic hydrogen leakage and flame propagation in turbulent jets undernormal temperatures and high pressure. Based on van der Waals’ equation of stat Read More
Estimating Greenhouse Gas Emissions from Hydrogen-Blended Natural Gas Networks
Dec 2024
Publication
Methane is a significant contributor to anthropogenic greenhouse gas emissions. Blending hydrogen with natural gas in existing networks presents a promising strategy to reduce these emissions and support the transition to a carbon-neutral energy system. However hydrogen’s potential for atmospheric release raises safety and environmental concerns necessitating an assessment of its impact on methane emissions and leakage behavior. This stu Read More
Minimization of Construction and Operation Costs of the Fuel Cell Bus Transportation System
Dec 2024
Publication
This paper took the actual bus transportation system as the object simulated the operating state of the system replaced all the current diesel engine buses with fuel cell buses using electrolysis-produced hydrogen and completed the existing timetable and routes. In the study the numbers of hydrogen production stations and hydrogen storage stations the maximum hydrogen storage capacity of the buses the supplementary hydrogen capacity of the buses Read More
Preliminary Assessment of a Hydrogen Farm Including Health and Safety and Capacity Needs
Dec 2024
Publication
The safety engineering design of hydrogen systems and infrastructure worker education and training regulatory compliance and engagement with other stakeholders are significant to the viability and public acceptance of hydrogen farms. The only way to ensure these are accomplished is for the field of hydrogen safety engineering (HSE) to grow and mature. HSE is described as the application of engineering and scientific principles to protect the Read More
Simple Energy Model for Hydrogen Fuel Cell Vehicles: Model Development and Testing
Dec 2024
Publication
Hydrogen fuel cell vehicles (HFCVs) are a promising technology for reducing vehicle emissions and improving energy efficiency. Due to the ongoing evolution of this technology there is limited comprehensive research and documentation regarding the energy modeling of HFCVs. To address this gap the paper develops a simple HFCV energy consumption model using new fuel cell efficiency estimation methods. Our HFCV energy model leverages real-tim Read More
Collaborative Control Strategy of Electric–Thermal–Hydrogen-Integrated Energy System Based on Variable-Frequency Division Coefficient
Dec 2024
Publication
To address the issues of diverse energy supply demands and power fluctuations in integrated energy systems (IESs) this study takes an IES composed of power-generation units such as wind and photovoltaic units along with various energy-storage systems including electrical thermal and hydrogen storage as the research subject. A collaborative control strategy is proposed for the IES which comprehensively considers the status of diverse energy-storag Read More
Hydrogen Strategy Update to the Market: December 2024
Dec 2024
Publication
Low carbon hydrogen is essential to achieve the Government’s Clean Energy Superpower and Growth Missions. It will be a crucial enabler of a low carbon and renewables-based energy system and will help to deliver new clean energy industries which can support good jobs in our industrial heartlands and coastal communities. Hydrogen presents significant growth and economic opportunities across the UK by enhancing our energy security providing flexible Read More
Green Hydrogen Blending into the Tunisian Natural Gas Distributing System
Dec 2024
Publication
It is likely that blending hydrogen into natural gas grids could contribute to economy-wide decarbonization while retaining some of the benefits that natural gas networks offer energy systems. Hydrogen injection into existing natural gas infrastructure is recognised as a key solution for energy storage during periods of low electricity demand or high variable renewable energy penetration. In this scenario natural gas networks provide an energy vector p Read More
Optimization Operation Strategy for Comprehensive Energy System Considering Multi-Mode Hydrogen Transportation
Dec 2024
Publication
The transformation from a fossil fuel economy to a low-carbon economy has reshaped the way energy is transmitted. As most renewable energy is obtained in the form of electricity using green electricity to produce hydrogen is considered a promising energy carrier. However most studies have not considered the transportation mode of hydrogen. In order to encourage the utilization of renewable energy and hydrogen this paper proposes a comprehensive e Read More
The UK Hydrogen Innovation Opportunity: Techno-economic Methodology
Apr 2024
Publication
This report outlines the methods and assumptions used in the hydrogen technology market analysis. The results of the analysis are presented in The UK Hydrogen Innovation Opportunity and the supporting report Hydrogen technology roadmaps. They include forecasts for the following market data: ○ Global hydrogen economy The overall size of the global hydrogen economy in 2023 2030 and 2050.○ Global and UK hydrogen technology market by tec Read More
The Role of Hydrogen in the Energy Mix: A Scenario Analysis for Turkey Using OSeMOSYS
Dec 2024
Publication
The urgent need to tackle climate change drives the research on new technologies to help the transition of energy systems. Hydrogen is under significant consideration by many countries as a means to reach zero-carbon goals. Turkey has also started to develop hydrogen projects. In this study the role of hydrogen in Turkey’s energy system is assessed through energy modeling using the cost optimization analytical tool Open Source Energy Modellin Read More
Towards a Resilience Evaluation Framework for Hydrogen Supply Chains: A Systematic Literature Review and Future Research Agenda
Dec 2024
Publication
Hydrogen energy is crucial for achieving net zero targets making the resilience of hydrogen supply chains (HSCs) increasingly important. Understanding current research on HSC resilience is key to enhancing it. Few studies summarise HSC resilience evaluation methods and link them to the general supply chain resilience and complex adaptive system (CAS) evaluation approaches. This study addresses this gap by systematically reviewing the literatur Read More
Reviewing Sector Coupling in Offshore Energy System Integration Modelling: The North Sea Context
Dec 2024
Publication
Offshore energy system integration is particularly important for realising a rapid and cost-effective low-carbon energy transition in the North Sea region. Effective implementation of strategies that require collaboration be tween countries developers and operators must be underpinned by robust and comprehensive modelling results. Intra-system interactions and diversity of sectors needed to facilitate the energy transition must be adequately Read More
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