Hydrogen-Electric Aircraft Technologies and Integration: Enabling an Environmentally Sustainable Aviation Future
As the global community grapples with growing concerns of a changing climate, many eyes have turned to the sustainability of the transportation sector. In the United States, transportation is currently the leading category contributing to all greenhouse gas emissions, producing more emissions per year than the electricity generation, industry, commercial and residential, and agricultural sectors individually. As various transportation modes transition to more sustainable models, such as with the use of battery-electric vehicles, the aviation sector has struggled to identify effective solutions for future sustainability goals, largely due to the difference in power and energy requirements of aircraft, as compared to other vehicles.
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Nonlinear Performance Degradation Prediction of Proton Exchange Membrane Fuel Cells Using Relevance Vector Machine
Environmental issues, especially global warming due to the greenhouse effect, have become more and more critical in recent decades. As one potential candidate among different alternative “green energy” solutions for sustainable development, the proton exchange membrane fuel cell (PEMFC) has received extensive research attention for many years for energy and transportation applications. In this paper, an advanced self-adaptive relevance vector machine (RVM) has been developed and demonstrated to predict the performance degradation of PEMFCs.
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The Island Hydrogen Project: Electrolytic Generated Hydrogen for Automotive and Maritime Applications
In 2014, the transport sector was responsible for 23% of total greenhouse gas emissions in the European Union (EU). During the same year, 13% of that sector’s emissions came from the maritime segment, a number that is expected to rise during the coming years. The transport sector’s share of renewable energy in 2014 was just 5.9%, mostly comprising biodiesel and bioethanol fuel.Electrification is a solution that will help reduce the transport sector’s reliance on hydrocarbonbased fuels. This article describes the Island Hydrogen project, which introduced and tested new solutions to produce and use hydrogen as a fuel for vehicles and vessels.
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Obstacles to the Success of Fuel-Cell Electric Vehicles: Are They Truly Impossible to Overcome?
Cities with substantial population growth continue to encounter economic, social, and environmental challenges in their daily operations. This growth has led to public outcry demanding that societies curb their dependence on fossil fuel consumption to limit global warming. In fact, major cities’ usage of fossil fuels constitutes 75% of global energy resource use and accounts for 70% of global greenhouse gas emissions, despite occupying only approximately 5% of the planet’s total land mass. Rapid urbanization also contributes to multiple types of serious environmental pollutants (e.g., air, soil, and water), which affect the people’s health and the quality of life.
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