Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Renewable hydrogen"”.
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Routes towards low-cost renewable hydrogen production
… declining conventional fossil fuel energy to renewables is one of the most significant challenges facing humanity. Hydrogen is anticipated as the key future energy vector. This is sought to bring more value and utility to renewable energy resources, and eventually providing an energy storage …
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Development of e-kerosene from the hydrogenation of CO2 with renewable hydrogen
L'abstract è presente nell'allegato / the abstract is in the attachment
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Technical and economic assessment of renewable hydrogen production and utilization for the transportation sector
Hydrogen energy is mooted to play a critical role in decarbonization of the transportation sector, due in part to its relatively high energy density (120 MJLHV/kg) and clean combustion product (the only combustion product is water). Renewable hydrogen can be generated from various renewable energy …
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OXYHYH20-Integrated Renewable Hydrogen and Oxygen Production for Reduced Emissions in Wastewater Treatment Plant Operations
… treatment strategy for wastewater, using renewable energy to produce hydrogen and oxygen gas by electrolysis. Hydrogen could be produced to power transport fleets, reducing plant emissions, while the oxygen could be used to replace the large volumes of pumped air required for aerobic …
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Quantification of Environmentally Sensitive Emissions by Substitution of Traditional Domestic Application Power Sources with Renewable Hydrogen Fuelled Solid Oxide Fuel Cell Combined Heat and Power
… from power stations) and increasing use of renewable energy sources, both on large and small scales. Micro- CHP (combined heat and power) is proposed as one solution that could help domestic consumers to increase their fuel efficiency and therefore decrease carbon dioxide emissions. Further …
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The adoption of renewable hydrogen for a cost-effective decarbonization of hard-to-abate industries - Development of an optimization framework for the cost-optimal design of power-to-hydrogen systems
L'abstract è presente nell'allegato / the abstract is in the attachment
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A consumer guide to the benefits and obstacles of transitioning to the hydrogen fuel cell
Hydrogen Fuel Cells are a much talked about technology often represented as promising virtually unlimited amounts of non-polluting power by chemically reacting hydrogen, the most abundant element in the universe, with oxygen without combustion. Our analysis indicates that fuel cells are indeed a …
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Development and assessment of renewable energy based integrated systems for dimethyl ether production
… is considered to be one of the most promising, renewable alternative fuels. This thesis studies, develops, analyzes and assesses the performance of three dimethyl-ether production integrated systems, where dimethyl-ether is produced from carbon dioxide and renewable hydrogen. The three systems …
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Sizing hybrid green hydrogen energy generation and storage systems (HGHES) to enable an increase in renewable penetration for stabilising the grid.
… become apparently growing in the deployment of renewable energy systems is the power grids inability to accept the forecasted growth in renewable energy generation integration. To support forecasted growth in renewable generation integration, it is now recognised that Energy Storage Technologies …
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Metal oxide heterostructured films with controlled architecture for enhanced photocatalytic properties
… of polluted wa- ter and water splitting for renewable hydrogen production are extensively studied but are still confronted to limitations for achieving high photocatalytic efficiencies that could be suc- cessfully commercialized. Investigations on powder materials have been widely reported …
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Fabrication of Catalyst Coated Membranes by Ultrasonic Spray for Proton Exchange Membrane Water Electrolysers
Renewable hydrogen, referred to as green hydrogen (GH), holds significant importance in the endeavour to decarbonise the transportation and industrial sectors. GH is generated via the electrochemical process of water splitting, utilising excess renewable energy sources such as solar and wind, thus …
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Material Recovery Potential from Solar Photovoltaics: Predictive Modeling and Characterization to Advance the Circular Economy
… Intelligence Boom’), while the other features renewable hydrogen production for steelmaking, shipping and the chemical industry (‘Green Hydrogen Takes Off’). The combined model predicts a lower material demand for silicon than previously anticipated in the base case, with a cumulative installed …
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Biotechnological Processes as Part of a Carbon Capture and Utilisation Strategy in the Oil and Gas Sector: A Case Study in a Natural Gas Treatment Plant in Libya
While the rapid deployment of renewable energy generation technologies is a critical priority, predictions of future global energy demand indicate that fossil fuels will continue to meet over 50% of global energy demand beyond 2050. Every effort should, therefore, be made to limit the climate …
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Exploring and exploiting charge-carrier confinement in semiconductor nanostructures : heterodimensionality in sub-monolayer InAs in GaAs and photoelectrolysis using type-II heterojunctions
… for the solar-powered generation of renewable hydrogen by water splitting is researched. The novel use of nanostructures at the semiconductor-electrolyte interface (SEI) in a photoelectrochemical cell (PEC) is proposed to help increase the maximum potential that can be …
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Computational Fluid Dynamics of High Temperature Shift Reaction of Reformate Gas in Fixed Bed and Membrane Reactors
… such as carbon dioxide, carbon monoxide, hydrogen sulphide and ammonia that limits its value. Renewable hydrogen is a clean, carbon-free energy resource that is obtainable from biogas upgrade via the reforming process. To increase hydrogen yield and CO conversion in reformate gas, the …
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Development of a novel platform for the optimal design, sizing and energy management of grid-integrated hybrid photovoltaic-hydrogen energy systems.
… increasing demand to scale-up the investment in renewable energy systems. To enable the increased integration of intermittent renewables such as wind and solar energies, while exploiting their full potential, adequate and sustainable energy storage systems are required. Hydrogen (H2) energy …
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Hydrogen Production by Water Gas Shift Reaction Following Dry Reforming of Biogas Methane in Membrane and Packed Bed Tubular Reactors
… of biogas methane, in order to produce bio-renewable hydrogen suitable for feed to a fuel cell. Accordingly, three phases of the study were executed involving the identification and optimization of the catalyst, application in a membrane reactor and kinetic studies of the water gas shift …
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Kinetic models for the Pt/CeO₂ catalysed water-gas shift reaction
… to be a successful power source, a reliable hydrogen source is required. Ultimately, the goal is for hydrogen to be supplied from renewable energy technology however, this type of technology is currently not mature enough to meet the continuous demand of the world's energy systems. Producing …
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A prospective comparative lifecycle assessment for green and grey hydrogen production and utilisation in the South African context
Green hydrogen has gathered increasing interest as a medium in the transition to a carbonneutral economy, with several large, export-focused projects currently under development in Southern Africa. However, the environmental implications of hydrogen production and utilisation are not well …
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Structure and activity relationships of bimetallic catalysts for aqueous phase reforming and the water-gas shift reaction
<p>As the existing deposits of petroleum and non-renewable energy resources are exhausted, become more difficult to extract, and remain in politically unstable regions of the world, the search for long term alternatives for fuels and chemicals from renewable sources such as biomass continues. One …