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Techniques de réduction et de traitement des émissions polluantes dans une machine thermique

Abstract : This thesis has consisted in a first part to introduce, on one hand, the concept of each of: lifecycle assessment "LCA" and biofuels, on the other hand, to present the benefits of applying aLCA on biofuels to evaluate their energy balances and to analyze their environmental impactsagainst conventional fuels.In a second part, we compared, from point of view energetic and environmental, 3 scenariosof electricity production: 2 scenarios of cogeneration (steam turbine and ORC) for theproduction of electrical energy and of heat from biomass, and a scenario of cogeneration by adiesel engine, these scenarios have been compared using two damage-oriented analysismethods: Eco-indicator 99 (E) and IMPACT2002 +In a third part, we worked on the evaluation of methane as fuel in "dual fuel" engines foragricultural purpose, the aim was to determine the environmental impact associated with theuse of this alternative fuel for diesel compared to other biofuels. Methods Eco-indicator 99(E) and CML have been used here.We were able to identify the main pollutants generated at each stage of the life cycle ofbiofuel and the steps that have the greatest environmental impacts, and to identify, accordingto our criteria and to the context the energy scenario the most consistent with the principle ofsustainable development.
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Dareen Alkadee. Techniques de réduction et de traitement des émissions polluantes dans une machine thermique. Sciences agricoles. Conservatoire national des arts et metiers - CNAM, 2011. Français. ⟨NNT : 2011CNAM0762⟩. ⟨tel-01005123⟩



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