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 113 for “"hydrogen fuel"”.
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Modeling hydrogen fuel distribution infrastructure
… question is to evaluate the structure of the hydrogen production, distribution, and dispensing infrastructure under various scenarios and to discover if any trends become apparent after sensitivity analysis. After reviewing the literature regarding the production, distribution, and dispensing …
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The competitive advantages of hydrogen fuel cells
… sought to investigate the competitiveness of hydrogen fuel cells. It was driven by the researcher's interest in the subject and the growing need for energy security. The study combines qualitative and quantitative data from secondary sources like research articles, government publications, …
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Cryogenic, compressed, and liquid hydrogen fuel storage in vehicles
Hydrogen is the viable energy carrier of future energy and transportation systems due to its clean emissions, light weight, and abundance. Its extremely low volumetric density, however, presents significant challenges to storage onboard vehicles. The study involves a survey of the current state of …
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Modelling and Optimization of Scalable Hydrogen Fuel Cell Systems for Aviation
Fuel cell systems provide one possible technological pathway for sustainable aviation propulsion; however, aviation presents unique challenges for these systems. To address these challenges, this thesis presents a modelling, simulation, and optimization tool for the sizing and performance …
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Hydrogen Fuel Cell Driven Origami-Inspired Large-Elongation Soft Robot Modules
Soft robots have gained popularity in recent years, especially in fields spanning medicine, space, to assistive robotics. Unlike traditionally rigid robots, soft robots offer inherent safety and a robust design. Furthermore, modular reconfigurable soft robots, which are robots composed of repeating …
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Analytical evaluation of microplasma technologies for production of hydrogen fuel from water
A H2-based energy economy could alleviate fossil fuel environmental effects. Hydrogen is an ideal fuel because of its ultra-high energy density, availability in common sources like water, and lack of harmful combustion byproducts. However, H2 lacks global adoption as a fuel because virtually all H2 …
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Novel, low-cost, CFRP pressure vessel design for hydrogen fuel cell applications
… in other gas storage applications for example in Hydrogen Fuel Cell (HFC) applications. This report details the research aimed at identifying the feasibility and suitability of the proposed CFRP pressure vessel concept for high pressure hydrogen gas storage for use in Hydrogen Fuel Cell Powered …
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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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The Role of Hydrogen Fuel in Hard-to-Decarbonise Modes of Transport: An Energy Systems Perspective
… utilisation of electricity grid derived liquid hydrogen (LH2) fuel for these purposes is investigated. Particular focus is dedicated to: (1) the geographical, situational and design niches for which the use of LH2 is favourable within aviation and shipping; (2) the ability of LH2 to power the …
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Strategic analysis of technical, commercial, and regulatory influences on the commercialization of hydrogen fuel cell vehicles
… invested in identifying technologies to increase fuel economy and reduce greenhouse gas emissions. Alternative propulsion technologies, such as fuel cells, are of tremendous interest to provide these benefits. However, factors including refueling infrastructure requirements, technology costs, and …
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Dispatchable Operation of Multiple Electrolysers for Demand Side Response and the Production of Hydrogen Fuel-Libyan Case Study
… issues and about the depletion of fossil fuels have acted as twin driving forces to the development of renewable energy and its integration into existing electricity grids. The variable nature of RE generators assessment affects the ability to balance supply and demand across electricity …
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Fabrication of PtNi and PtV near-surface alloys as improved catalysts for proton exchange membrane hydrogen fuel cells
… improved catalysts in proton exchange membrane hydrogen fuel cells. The need for this study arose in order to further understand the principles behind the predicted catalytic properties of NSAs, to fabricate them and to characterize them experimentally. Two groups of NSAs were fabricated, namely …
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Techno-Economic Analysis of Line Haul and Switcher Locomotive Propulsion by Diesel, Battery, and Hydrogen Fuel Cell Technologies
… emerging alternatives such as battery electric, hydrogen fuel cell, and electrified rail, the paper evaluates their potential to reduce emissions within the freight rail sector. The use of a Total Cost of Ownership (TCO) and Environmental Impact Analysis quantifies the financial and environmental …
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Study of an internal combustion engine to burn hydrogen fuel and backfire elimination using a carburetor fuel delivery method
Hydrogen appears to be a clean and sustainable fuel for transportation vehicles, including internal combustion engine vehicles. In this research, a 1986 GMC Sierra truck with a 350CID 5.7L V8, 4 barrel carbureted Chevrolet gasoline engine is converted to burn hydrogen as a sustainable and …
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Structure-Morphology-Property Relationships in Perfluorosulfonic Acid Ionomer Dispersions, Membranes, and Thin Films to Advance Hydrogen Fuel Cell Applications
Recent efforts toward the commercialization of hydrogen fuel cells, a sustainable energy technology, have led to interest in the effects of industrial processing parameters on the morphology and properties of fuel cell ionomers. The ionomer functions as a solid electrolyte membrane on the order of …
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Internal Combustion Engine Performance using Aluminum as Fuel
… and energy-dense storage mechanism for hydrogen fuel. One of the challenges facing aluminum-fuel technology is the sensitivity of hydrogen fuel cells to temperature, humidity, vibrations, and particulate contamination. This paper explores internal combustion engines as an alternative …
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A Techno-Economic Analysis of Hydrogen, Electric, and Diesel Fuel in Medium- and Heavy-Duty Transportation Applications
… analysis for three distinct vehicle drivetrains (hydrogen fuel-cell vehicles (FCVs), battery-electric vehicles (BEVs), and diesel vehicles (ICE-D)) across a variety of applications in the medium- and heavy-duty (MD/HD) transportation market. The primary basis for evaluating each drivetrain is …
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Hydrogen powered hybrid wing body freighter systems analysis and conceptual design using the ACS tool
… cargo using aircraft. The study looked at using hydrogen and the resulting infrastructure to allow the system to function. The functionalities and then subsystems were defined for the aircraft that would be used by the system. After the level 0 Green Cargo Transport system was investigated, the …
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Synthesis gas use in internal combustion engines.
… on: 1.) A CI engine operating on ethanol and hydrogen fuel 2.) A CI engine operating on diesel fuel with varying blends of synthesis gas 3.) A SI engine operating on varying blends of synthesis gas <DISS_para>4.) An HCCI engine operating on hydrogen fuel 5.) An HCCI engine operating on varying …
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The development of inorganic and organic/inorganic membranes for DMFC application
A fuel cell is an energy device that converts chemical energy to electrical energy. Low temperature fuel cells, namely the hydrogen fuel cell and the direct methanol fuel cell are preferred amongst other fuel cell types for stationary and vehicular applications, due to their small size and their …
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