Australia
A Review of Hydrogen Technologies and Engineering Solutions for Railway Vehicle Design and Operations
Oct 2021
Publication
Interest in hydrogen-powered rail vehicles has gradually increased worldwide over recent decades due to the global pressure on reduction in greenhouse gas emissions technology availability and multiple options of power supply. In the past research and development have been primarily focusing on light rail and regional trains but the interest in hydrogen-powered freight and heavy haul trains is also growing. The review shows that some technical feasibility Read More
Skilling the Green Hydrogen Economy: A Case Study from Australia
Feb 2023
Publication
This paper explores the skills landscape of the emerging green hydrogen industry in Australia drawing on data collected from a study that gathered insights on training gaps from a range of hydrogen industry participants. A total of 41 industry participants completed a survey and 14 of those survey respondents participated in industry consultations. The findings revealed widespread perceptions of training and skilling as being very important to the industry Read More
Electrochemical Ammonia: Power to Ammonia Ratio and Balance of Plant Requirements for Two Different Electrolysis Approaches
Nov 2021
Publication
Electrochemical ammonia generation allows direct low pressure synthesis of ammonia as an alternative to the established Haber-Bosch process. The increasing need to drive industry with renewable electricity central to decarbonisation and electrochemical ammonia synthesis offers a possible efficient and low emission route for this increasingly important chemical. It also provides a potential route for more distributed and small-scale ammonia synth Read More
Australians’ Considerations for Use of Hydrogen in the Transport Sector
Sep 2019
Publication
Hydrogen fuel cells power a range of vehicles including cars buses trucks forklifts and even trains. As fuel cell electric vehicles emit no carbon emissions and only produce water vapor as a by-product they present an attractive option for countries who are experiencing high pollution from transport. This paper presents the findings of ten focus groups and a subset of a national survey which focused specifically on use of hydrogen in the transport sector ( Read More
Sustainable Hydrogen Energy in Aviation - A Narrative Review
Feb 2023
Publication
In the modern world zero-carbon society has become a new buzzword of the era. Many projects have been initiated to develop alternatives not only to the environmental crisis but also to the shortage of fossil fuels. With successful projects in automobile technology hydrogen fuel is now being tested and utilized as a sustainable green fuel in the aviation sector which will lead to zero carbon emission in the future. From the mid-20th century to the early 21st Read More
Process Reconfiguration and Intensification: An Emerging Opportunity Enabling Efficient Carbon Capture and Low-cost Blue Hydrogen Production
Mar 2023
Publication
Low-carbon hydrogen can play a significant role in decarbonizing the world. Hydrogen is currently mainly produced from fossil sources requiring additional CO2 capture to decarbonize which energy intense and costly. In a recent Green Energy & Environment paper Cheng and Di et al. proposed a novel integration process referred to as SECLRHC to generate high-purity H2 by in-situ separation of H2 and CO without using any additional separation unit. Theore Read More
Life Cycle Greenhouse Gas Emission Assessment for Using Alternative Marine Fuels: A Very Large Crude Carrier (VLCC) Case Study
Dec 2022
Publication
The International Maritime Organization (IMO) has set decarbonisation goals for the shipping industry. As a result shipowners and operators are preparing to use low- or zero-carbon alternative fuels. The greenhouse gas (GHG) emission performances are fundamental for choosing suitable marine fuels. However the current regulations adopt tank-to-wake (TTW) emission assessment methods that could misrepresent the total climate impacts of fuels. To bet Read More
A Power Dispatch Allocation Strategy to Produce Green Hydrogen in a Grid-integrated Offshore Hybrid Energy System
Mar 2024
Publication
A dedicated grid-tied offshore hybrid energy system for hydrogen production is a promising solution to unlock the full benefit of offshore wind and solar energy and realize decarbonization and sustainable energy security targets in electricity and other sectors. Current knowledge of these offshore hybrid systems is limited particularly in the integration component control and allocation aspects. Therefore a grid-integrated analytical model with a po Read More
Hydrogen Trapping and Embrittlement in Metals - A Review
Apr 2024
Publication
Hydrogen embrittlement in metals (HE) is a serious challenge for the use of high strength materials in engineering practice and a major barrier to the use of hydrogen for global decarbonization. Here we describe the factors and variables that determine HE susceptibility and provide an overview of the latest understanding of HE mechanisms. We discuss hydrogen uptake and how it can be managed. We summarize hydrogen trapping and the technique Read More
Just Trade-offs in a Net-zero Transition and Social Impact Assessment
Apr 2024
Publication
Countries around the world are prioritising net zero emissions to meet their Paris Agreement goals. The demand for social impact assessment (SIA) is likely to grow as this transition will require investments in decarbonisation projects with speed and at scale. There will be winners and losers of these projects because not everyone benefits the same; and hence trade-offs are inevitable. SIAs therefore should focus on understanding how the risks and benefits will Read More
Optimal Battery and Hydrogen Fuel Cell Sizing in Heavy-haul Locomotives
Jul 2023
Publication
Global supply chains must be decarbonised as part of meeting climate targets set by the United Nations and world leaders. Rail networks are vital infrastructure in passenger and freight transport however have not received the same push for decarbonisation as road transport. In this investigation we used real world data from locomotives operating on seven rail corridors to identify optimal battery capacity and hydrogen fuel cell (HFC) power in Read More
Strategies for Life Cycle Impact Reduction of Green Hydrogen Production - Influence of Electrolyser Value Chain Design
Mar 2024
Publication
Green Hydrogen (H2 via renewable-driven electrolysis) is emerging as a vector to meet net-zero emission targets provided it is produced with a low life cycle impact. While certification schemes for green H2 have been introduced they mainly focus on the embodied emissions from energy supply during electrolyser operation. This narrow focus on just operation is an oversight considering that a complete green H2 value chain also includes the electrolyser’s m Read More
Key Considerations for Evaluating Underground Hydrogen Storage (UHS) Potential in Five Contrasting Australian Basins
Apr 2024
Publication
Hydrogen gas can provide baseload energy as society decarbonizes through the energy transition. Underground Hydrogen Storage (UHS) will be secure convenient and scalable to accommodate excess hydrogen production or compensate temporary shortfalls in energy supply. Hydrogen is a gas under all viable subsurface conditions so is invasive mobile and low-density. Methane and CO2 are also stored underground but storage parameters differ f Read More
Biohydrogen Production from Biomass Sources: Metabolic Pathways and Economic Analysis
Sep 2021
Publication
The commercialization of hydrogen as a fuel faces severe technological economic and environmental challenges. As a method to overcome these challenges microalgal biohydrogen production has become the subject of growing research interest. Microalgal biohydrogen can be produced through different metabolic routes the economic considerations of which are largely missing from recent reviews. Thus this review briefly explains the techniques a Read More
Performance, Emissions, and Economic Analyses of Hydrogen Fuel Cell Vehicles
May 2024
Publication
The transport sector is considered to be a significant contributor to greenhouse gas emissions as this sector emits about one-fourth of global CO2 emissions. Transport emissions contribute toward climate change and have been linked to adverse health impacts. Therefore alternative and sustainable transport options are urgent for decarbonising the transport sector and mitigating those issues. Hydrogen fuel cell vehicles are a potential alternative to con Read More
Open-source Project Feasibility Tools for Supporting Development of the Green Ammonia Value Chain
Nov 2022
Publication
Ammonia plays a vital role in feeding the world through fertilizer production as well as having other industrial uses. However current ammonia production processes rely heavily on fossil fuels mostly natural gas to generate hydrogen as a feedstock. There is an urgent need to re-design and decarbonise the production process to reduce greenhouse emissions and avoid dependence on volatile gas markets and a depleting resource base. Renewable en Read More
Improved Engine Performance and Significantly Reduced Greenhouse Gas Emissions by Fumigating Hydrogen in a Diesel Engine
Oct 2022
Publication
A thermodynamic model was developed for combustion performance and emissions with a reference diesel fuel a 10 vol% methanol blend with 90 vol% diesel a 10 vol% ethanol with 90 vol% diesel and a 4% hydrogen fumigating in the inlet port along with diesel direct injection. The diesel and two alcohol blends (10% methanol–90% diesel and 10% ethanol–90% diesel) was directly injected into the cylinder while hydrogen was fumigated at the inlet p Read More
Environmental Impact Assessment of Hydrogen Production via Steam Methane Reforming Based on Emissions Data
Oct 2022
Publication
Steam methane reforming (SMR) using natural gas is the most commonly used technology for hydrogen production. Industrial hydrogen production contributes to pollutant emissions which may differ from the theoretical estimates due to process conditions type and state of installed pollution control equipment. The aim of this study was to estimate the impacts of hydrogen production using facilitylevel real emissions data collected from multipl Read More
The Role of Offshore Wind Power in Renewable Hydrogen Production
Jan 2023
Publication
We investigate the role of offshore wind in a hybrid system comprising solar PV offshore wind electrical storage (pumped hydro energy storage or battery) and an electrolyser in an off-grid hydrogen production system. Further we capture a wide range of future cost reduction scenarios for offshore wind power and solar PV generation in addition to accounting for future projected falls in electrolyser costs allowing future hydrogen costs to be estimated wit Read More
Biohydrogen—A Green Fuel for Sustainable Energy Solutions
Oct 2022
Publication
Energy plays a crucial role in the sustainable development of modern nations. Today hydrogen is considered the most promising alternative fuel as it can be generated from clean and green sources. Moreover it is an efficient energy carrier because hydrogen burning only generates water as a byproduct. Currently it is generated from natural gas. However it can be produced using other methods i.e. physicochemical thermal and biological. The biological met Read More
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