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Academic literature on the topic 'Avions – Carburants – Aspect environnemental'
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Dissertations / Theses on the topic "Avions – Carburants – Aspect environnemental"
Gaillot, Tiphaine. "Évaluation de l’impact des émissions aériennes sur le changement climatique : développement de la méthode d’Analyse du Cycle de Vie et recommandations pour la sélection de carburants alternatifs." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS538.pdf.
Full textGiven the increase in demand from the aviation sector and its emissions, we need to assess the impact of aviation on the environment. This thesis focuses on the impact of aviation emissions on climate change. This category is the most impacted by subsonic aircraft. Various levers have been deployed to mitigate this impact, including the incorporation of alternative fuels. The Life Cycle Assessment method is the one used in this work. The aim is to assess all emissions having a direct and indirect impact on climate change during a long-haul or short-haul, for the fossil fuel Jet A-1, and alternative jet fuels such as FT-SPK (paraffinic kerosene from Fischer-Tropsch synthesis) and hydrogen. As most of the fuel is burnt at high altitude during the cruise phase and the majority of emissions have a greater impact at cruising altitudes, we first look at the nature of emissions at high altitude and their impact on climate change, based on GWP (global warming potential) at different time horizons. The assessment of high-altitude emissions for different types of jet fuel over 20 and 100-year time horizons illustrated the crucial role of short-lived climate forcers, especially nitrogen oxides and contrails-cirrus. In a second stage, the scope of the air transport assessment has been extended to include the airport, the aircraft, and the production and use of the fuel. These results demonstrate the importance of high-altitude emissions and the production phase in the complete assessment. The thesis concludes with an assessment of the impact of emissions during the use and production phase of fuel mix in 2050, based on the different energy demands specific to the of the International Energy Agency (IEA) report published in 2022. The development of low-emission processes, as well as changes in behavior and the implementation of specific sobriety policies, are essential to reducing the environmental impact of the aviation sector
Marachlian, Jacques. "Modélisation et gestion de la thermique globale d’un véhicule en vue de réduire les émissions de CO2." Nancy 1, 2006. http://www.theses.fr/2006NAN10110.
Full textRojo, Escude-Cofiner Carolina. "Impact environnemental des aérosols formés dans les panaches d'avions : modélisation et application à l'utilisation de carburants alternatifs." Thesis, Strasbourg, 2012. http://www.theses.fr/2012STRAF047/document.
Full textAircraft emit important amounts of particulate and gaseous matter in the atmosphere contributing on the one hand to local air pollution and on the other hand to the atmospheric radiative forcing and to climate change. Introducing alternative fuels in aviation can be considered as a viable option to reducing the impact of aviation, being economically and environmentally sustainable. These selected biofuels tend to have lower aromatic and sulphur contents inducing a simultaneous reduction in sulphuric acid and soot emissions. However modifying the nature and composition of the fuel used can entail unexpected consequences. It is therefore essential to study and determine the evolution of aerosols in the aircraft plume. To manage this task, a microphysical trajectory box, previously tested with standard kerosene, has been developed. After an assessment concerning the typical emissions from the combustion of biofuels in aviation, simulations have been undertaken in order to predict aerosol evolution. Several microphysical processes have been revised such as droplet homogeneous freezing or the behaviour of organic compounds
Walter, Christian. "Conversion de naphtènes sur des catalyseurs métalliques et acides." Montpellier 2, 1995. http://www.theses.fr/1995MON20098.
Full textTran, Luc Sy. "Étude de la formation de polluants lors de la combustion de carburants oxygénés." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0171/document.
Full textThe decrease of petroleum reserves and the increase of concentration of greenhouse gas CO2 are the two major known problems related to the use of fossil fuels. Bio-fuels appear as a means allowing a decrease of the dependence on fossil fuels and a reduction of the harmful impact of engine on the environment. Bio fuels are considered as a source of renewable energy. The aim of this thesis was to develop and validate experimentally the high temperature kinetic models for the combustion of oxygenated compounds of bio-fuels: ethanol, second-generation bio-fuels of families of furan (furan, 2-methylfuran, 2,5-dimethylfuran), of tetrahydrofuran (tetrahydrofuran, 2 methyltetrahydrofuran), and tetrahydropyran, using new data obtained in laminar premixed low-pressure flame. About 20-60 products were quantified by gas chromatography and identified using mass spectrometry. The results obtained were then used to analyze the consumption pathways of fuels and the formation pathways of products, especially for pollutants, in order to better understand the combustion chemistry of these bio-fuels. This thesis report includes 5 chapters and a conclusion. The first chapter presents a review of the major works already published in the literature for the oxidation of ethanol and cyclic ethers. In the second chapter, the experimental setup of laminar premixed flame with the analytical techniques is described, detailing in particular new developments. Eventually, chapters 3, 4, 5 present the experimental and modeling results of the study of the combustion chemistry of the compounds studied
Books on the topic "Avions – Carburants – Aspect environnemental"
Palmer, Walter J. Will Sustainability Fly?: Aviation Fuel Options in a Low-Carbon World. Taylor & Francis Group, 2016.
Find full textPalmer, Walter J. Will Sustainability Fly?: Aviation Fuel Options in a Low-Carbon World. Taylor & Francis Group, 2016.
Find full textWill Sustainability Fly?: Aviation Fuel Options in a Low-Carbon World. Taylor & Francis Group, 2015.
Find full text