Dissertations / Theses on the topic 'Industries énergétiques – Environnement'
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Kravtzoff, Ivan. "Optimisation d'un système hybride de génération d'énergie électrique permettant de minimiser la consommation et l'empreinte environnementale." Electronic Thesis or Diss., CentraleSupélec, 2015. http://www.theses.fr/2015CSUP0015.
Full textGrowing environmental issues and concerns have led to efforts to reduce CO2 and greenhouse effect pollutant emissions in the field of electric power generation. This has led Leroy Somer to investigate systems based on hybrid technologies to reduce genset fuel consumption and operating costs. A methodology is developed in this thesis to address issues of sizing hardware resources and their optimal use. The optimum energy management strategy is based on the dynamic programming algorithm of Bellman. It will be associated to a differential evolution optimization algorithm to optimize the design of the hybrid structure. The objective functions are obtained by developing energetic and economic models. Through this method, we show that the benefits of a hybrid generator are strongly related to its use. In cases where the generator is used on profiles with low load factors, the benefits will be significant. It will be very important to have good knowledge of load profiles applications before sizing the whole structure of the hybrid generator. A prototype of this system has been developed and has confirmed simulation results
Bui, Xuan-Hoi. "Dynamique des prix et des marchés internationaux des énergies fossiles : de l'enjeu actuel à la prise en compte des contraintes d'émission de long terme." Grenoble 2, 2003. http://www.theses.fr/2003GRE21009.
Full textAlliaume, Véronique. "Intégration de l'environnement dans la stratégie d'entreprise : cas d'application EDF." Paris, Institut d'études politiques, 1996. http://www.theses.fr/1996IEPP0038.
Full textImpacts, the preservation of nature, the safety and security of products, and chemical or nuclear installations,. . . The dynamics of this standardisation process (the definition of technical and legal standards) the development and internationalisation of environmental policies (setting up of appropriate regulatory bodies) has resulted, at least in part, in an internationalisation by those responsible for the pollution of the social costs related to the environmental damage caused. Indeed, these dispositions have mostly been lobbied by the numerous associations or environmental and or ecological movements, with the assistance of the lawyers, the support of science and economics professors, and the back up of the media, to the extent that public opinion still today is significant in shaping environmental action, and plays a crucial role for those companies accused of misdemeanours. As a result, Electricite de France, one of the largest electricity companies in the world and one of the last state monopolies, has had to adapt on three fronts : internal, national and international. At each of these three levels, the environment is one of the major factors that EDF is required to consider in order to deal with its development and future. Such environmental problems that EDF must face are obviously related to the activities of the company which generates almost all the electric energy of France, as well as supplying and distributing it to each customer's home. Furthermore, through its undertakings abroad : direct sales of electricity in Europe, export and operations of electricity generating systems, technical and financial engineering, or its "diplomatic" activity through its participation in E7, EDF is required to meet a global challenge : that of sustainable development. Hence, the environment plays a significant role with implications across the board of EDF's activities and strategy, whether in technical choices for generation or marketing of…
Berrier-Lucas, Céline. "Emergence de la dimension environnementale de la RSE : une étude historique franco-québécoise d'EDF et d'Hydro-Québec." Thesis, Paris 9, 2014. http://www.theses.fr/2014PA090039/document.
Full textThis dissertation studies the environmental dimension of CSR. Current issues raised by sustainability need to deconstruct the concept of CSR to reveal the underlying structure of the Business & Society academic field. Through historical and comparative approaches, this research follows the trail that socio-Environmental issues leave in the controversies they deploy, in the relationships they forge and in compromises they establish with human and non-Humans through the construction of four energy facilities in France (Tignes’ hydroelectric dam and La Rance’ tidal power plant) and Quebec (Bersimis’ hydroelectric dam and Gentilly’ nuclear plant) during the 1945th until the 1970th. In the line of work that develop non dichotomous understanding of the nature and culture by taking the refusal of Modern ontology (Latour; Descola; Gladwin, Kennely and Krause, and Banerjee etc.) as a base, it sheds light on associations/dissociations performed within heterogeneous group of allies and revisits "environmental turn" thanks to the precise analysis of the work of the founding father of CSR, Howard R. Bowen Social Responsibilities of the Businessman (1953), illuminating its theoretical legacies. This research aims at making three contributions. First, it refines the "naturalistic" approach or "Modern" in two empirical and cognitive perspectives and two modes of relating to collective: realism and nominalism. Then it entered the literature of CSR into the Modern ontology by showing theoretical legacies in wilderness conservation. Finally, it mobilizes the Amodern approach to analyze the socio-Environmental issues, and proposes an alternative understanding of CSR based on a dynamic and relational view of responsibility where the traditional boundaries of the business environment are broken in favor of socio-Environmental networks
Garnit, Sadok. "Etude d'un système de génération d'électricité comportant une pile à combustion PEM et un générateur d'hydrogène pour la voiture électrique." Paris, ENMP, 2002. http://www.theses.fr/2002ENMP1118.
Full textHalconruy, Thierry. "Nouvelles compétences des formateurs des écoles françaises d'ingénieurs du bâtiment face à la révolution environnementale et énergétique : éléments de mise en œuvre dans une structure de formation." Versailles-St Quentin en Yvelines, 2013. http://www.theses.fr/2013VERS016S.
Full textSustainable development issues have strong impact on the building sector. To deal with these issues, major changes are to occur, not only in terms of organization but also in terms of professional skills. Consequently, the sector must prepare for a huge reconfiguration of professional practices. Engineering being directly affected by this evolution, this requires the implementation of adapted training, and, therefore, appeals for a significant enhancement of the skills of the teachers. To identify these different aspects the present research was conducted using a cross-approach. Following a first axis, specific issues of the construction industry are studied in order to make clearly appear the major mutations that will appear in the short and medium term as an answer to environmental and energy issues. Firstly, an analysis of the sector is proceeded in order to characterize, on one hand, professional practices and, on the other hand, the different jobs occupied by engineers. Secondly, an analysis by themes and technologies, taking into account research activities, technological trends and interviews of professionals, leads to identify the technical and behavioral changes which future engineers should be prepared to. From this double analysis the profiles of competencies required for future engineers, in the short and medium term, are deduced. Following a second axis, a focus is made on issues inherent to trainers working for engineering schools. Analysis of skills required for trainers operating in engineering schools leads to distinguish two major fields (teaching skills and disciplinary skills) likely to be strongly impacted in case of major structural or technological evolution. By crossing the results of the two axes of analysis, we highlight the need for new skills for trainers, for initial training as well as for continuous training, in order to accompany the evolution of the sector. These conclusions are then compared with the results of an inquiry proceeded within an existing higher education school representative of building engineers training facilities. The analysis shows highly contextual issues regarding capitalization and development of the skills of these trainers. It then makes concrete proposals on how to create the conditions in order to achieve the desired skills
Djemaa, Ahcène. "Modélisation bottom-up, un outil d'aide à la décision long terme pour les mesures politiques en matière d'énergie et d'environnement : le modèle TIMES appliqué aux industries grandes consommatrices d'énergie." Phd thesis, École Nationale Supérieure des Mines de Paris, 2009. http://pastel.archives-ouvertes.fr/pastel-00005303.
Full text- tracer l'image de l'industrie (profil de production technologique),
- calculer les consommations énergétiques et les potentiels d'économies d'énergies réalisables,
- estimer les émissions de dioxyde de carbone résultantes. Ce travail indique qu'il existe encore un important potentiel d'économies d'énergie et de réductions des émissions de dioxyde de carbone dans l'ensemble des secteurs industriels.
Anselmi, Hélène. "Modélisation et évaluation environnementale d’une unité de captage de CO₂ intégrée à un procédé industriel." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0080.
Full textLimiting carbon dioxide (CO2) emissions is a major global issue, particularly for the energy, chemical and metallurgical industries. To this end, CO2 capture technologies have been developed in recent decades. In this study, we focused on three types of CO2 capture technologies: chemical absorption by MEA, membrane separation and activated carbon adsorption. The CO2 considered is emitted by a coal-fired power station and then directly valorized within a manufacturing process on the same site. The objective of this study was to quantify the environmental benefits of installing a CO2 capture technology in comparison to the current configuration, without CO2 capture. Our approach combined process modeling and life cycle assessment. The methodology adopted was to model the complete system (the power plant, the manufacturing process and the various capture units) using a flowsheeting software (Aspen Plus), then to determine the environmental impacts by LCA. The results show that the MEA chemical adsorption process is strongly penalized by the use of the solvent, both regarding the energy consumption and the environmental impacts. The membrane process exhibits significant environmental impacts, despite a much lower energy consumption, due to the massive use of polymers (membrane materials). Finally, the activated carbon adsorption process has lower environmental impacts than the other two processes in the vast majority of impact categories
Hnayno, Mohamad. "Optimisation des performances énergétiques des centres de données : du composant au bâtiment." Electronic Thesis or Diss., Reims, 2023. http://www.theses.fr/2023REIMS021.
Full textData centers consume vast amounts of electrical energy to power their IT equipment, cooling systems, and supporting infrastructure. This high energy consumption contributes to the overall demand on the electrical grid and release of greenhouse gas emissions. By optimizing energy performance, data centers can reduce their electricity bills, overall operating costs and their environmental impact. This includes implementing energy-efficient technologies, improving cooling systems, and adopting efficient power management practices. Adopting new cooling solutions, such as liquid cooling and indirect evaporative cooling, offer higher energy efficiency and can significantly reduce the cooling-related energy consumption in data centres.In this work, two experimental investigations on a new cooling topologies for information technology racks are conducted. In the first topology, the rack-cooling system is based on a combination of close-coupled cooling and direct-to-chip cooling. Five racks with operational servers were tested. Two temperature difference (15 K and 20 K) was validated for all the IT racks. The impact of these temperature difference profiles on the data-centre performance was analysed using three heat rejection systems under four climatic conditions for a data centre of 600 kW. The impact of the water temperature profile on the partial power usage effectiveness and water usage effectiveness of data centre was analysed to optimise the indirect free cooling system equipped with an evaporative cooling system through two approaches: rack temperature difference and by increasing the water inlet temperature of the data centre. In the second topology, an experimental investigation conducted on a new single-phase immersion/liquid-cooling technique is developed. The experimental setup tested the impact of three dielectric fluids, the effect of the water circuit configuration, and the server power/profile. Results suggest that the system cooling demand depends on the fluid’s viscosity. As the viscosity increased from 4.6 to 9.8 mPa.s, the cooling performance decreased by approximately 6 %. Moreover, all the IT server profiles were validated at various water inlet temperatures up to 45°C and flow rates. The energy performance of this technique and the previous technique was compared. This technique showed a reduction in the DC electrical power consumption by at least 20.7 % compared to the liquid-cooling system. The cooling performance of the air- and liquid-cooled systems and the proposed solution was compared computationally at the server level. When using the proposed solution, the energy consumed per server was reduced by at least 20 % compared with the air-cooling system and 7 % compared with liquid-cooling system.In addition, a new liquid cooling technology for 600 kW Uninterruptible Power Supply (UPS) units. This cooling architecture gives more opportunities to use free cooling as a main and unique cooling system for optimal data centres (DCs). Five thermal hydraulic tests are conducted with different thermal conditions. A 20 K temperature difference profile was validated with a safe operation for all UPS electronic equipment resulting with a thermal efficiency of 82.27 %. The impact of decreasing water flow rate and increasing water and air room temperatures was also analysed. A decrease in inlet water and air temperatures from 41°C to 32°C and from 47°C to 40°C respectively increases the thermal efficiency by 8.64 %. Furthermore, an energy performance analysis comparison is made between air cooled and water cooled UPS units on both UPS and infrastructure levels
Vechiu, Ionel. "Modélisation et analyse de l'intégration des énergies renouvelables dans un réseau autonome." Le Havre, 2005. https://tel.archives-ouvertes.fr/tel-00179164.
Full textIn many of the remote areas, the diesel generator is the main source of power supply. The cost of grid extension is, and will probably continue to be, prohibitive and the fuel cost increases severely with the remoteness of the location. The combination of several energy sources (wind turbines, photovoltaic panels, small hydroelectric power plants etc. ) in a Hybrid Power System (HPS) can be very attractive for most of the remote areas, in terms of cost and availability. However, improvements of the design and operation of the HPS is still needed to allow this technology more competitive in remote areas. In this context, the work presented in this thesis gives a contribution to the behaviour analysis and the performances control of an HPS constituted by two renewable sources, a diesel generator and storage batteries. This kind of system is studied according to three aspects: sizing, maximizing the use of the renewable resource and power quality
Le, Minh Thong. "Le rôle des gaz conventionnels et non-conventionnels dans la transition énergétique en Asie." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAE007/document.
Full textEnergy and environmental issues are one of the main challenges for humanity in the 21st century. Global growth in energy demand links to environmental concerns including pollution, global warming and reduction of CO2 emissions. In particular, it is an urgent request in rapidly growing developing regions such as Asian countries. Using cleaner energy sources, renewable energy instead of traditional energy sources like coal and oil is an inevitable option in the future. In the current context, natural gas is seen as a clean energy source which plays a major role in the energy transition process towards a low-carbon economy. The consequences for natural gas markets are significant and the condition of this change is an abundant supply of natural gas. The development of unconventional gas, particularly shale gas, provides an opportunity to expand the global gas supply. This is illustrated by the “shale gas revolution” in US which has profoundly changed the regional gas markets. However, this "revolution" is hardly reproducible in other regions of the world. This thesis demonstrates particularly that apart from geological, institutional conditions (taxation, property rights), economic (prices, technologies) and organizational (free markets) are necessary for a large scale development of unconventional resources. This research also shows that most of these conditions are not met in Europe or Asia (especially in China). Therefore, an energy transition by natural gas to meet climate challenges in Asia will be solved through imports, rather than through regional production. From three scenarios of the POLES model based on assumptions about climate policy, shale gas development and rapid increase of demand for gas in the energy mix (particularly in Asia), two main conclusions emerge. The developments of shale gas with low cost in the USA make the global gas supply abundant and more competitive than other energies, particularly coal. Therefore, even without climate policy, the conditions are ripe for the increaseof natural gas proportion in the energy mix. Secondly, a strong climate policy has contradictory effects on the relative share of natural gas in the Asian energy mix. On the one hand, it allows natural gas larger penetration into the energy mix of Asia. But at the same time, with limitation of energy demand, requested natural gas volumes are only slightly higher than in scenarios without climate policy
Anselmi, Hélène. "Modélisation et évaluation environnementale d’une unité de captage de CO₂ intégrée à un procédé industriel." Thesis, Université de Lorraine, 2019. http://www.theses.fr/2019LORR0080.
Full textLimiting carbon dioxide (CO2) emissions is a major global issue, particularly for the energy, chemical and metallurgical industries. To this end, CO2 capture technologies have been developed in recent decades. In this study, we focused on three types of CO2 capture technologies: chemical absorption by MEA, membrane separation and activated carbon adsorption. The CO2 considered is emitted by a coal-fired power station and then directly valorized within a manufacturing process on the same site. The objective of this study was to quantify the environmental benefits of installing a CO2 capture technology in comparison to the current configuration, without CO2 capture. Our approach combined process modeling and life cycle assessment. The methodology adopted was to model the complete system (the power plant, the manufacturing process and the various capture units) using a flowsheeting software (Aspen Plus), then to determine the environmental impacts by LCA. The results show that the MEA chemical adsorption process is strongly penalized by the use of the solvent, both regarding the energy consumption and the environmental impacts. The membrane process exhibits significant environmental impacts, despite a much lower energy consumption, due to the massive use of polymers (membrane materials). Finally, the activated carbon adsorption process has lower environmental impacts than the other two processes in the vast majority of impact categories
Adès, Julie. "L'impact du cadre réglementaire fédéral de réduction d'émissions de gaz à effet de serre de 2007 sur les choix des sources d'énergie de l'industrie québécoise des pâtes et papiers." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/26836/26836.pdf.
Full textBen, Ayed Ramzi. "Eco-conception d’une chaine de traction ferroviaire." Electronic Thesis or Diss., Ecole centrale de Lille, 2012. http://www.theses.fr/2012ECLI0009.
Full textWith the introduction of different environmental standards like ISO 14001, concerns of manufacturers in railway industry are more and more oriented to the design of green products. One important issue when designing such products is the control of the cost impact and the evaluation of the price which consumers agree to pay for a reduced environmental footprint.Eco-design of railway train presents several challenges for the designer. The first one is the complexity of the life cycle analysis of such components. The second challenge is the necessity of consideration of several environmental impacts in design stage given the number of impacts. Finally, railway components have different models with different granularity which can be used in the process of eco-design. To overcome these problems we propose in this work a method which involves two steps. The first one is to simplify the LCA of the railway train using environmental management software and take the opportunity to build a malleable model to calculate eleven impacts. The second step, is to aggregate these impacts for a single indicator which is considered later as environmental criterion in the eco-design process. In order to investigate optimization tools, the eco-design problem is expressed into an optimization problem. Optimization algorithms are able to solve this problem and to find the optimal set of compromises between environmental criterion and the cost of the railway product. The set of compromises is given as a graph called the Pareto front. In our work the cost is expressed by the mass of the component and some optimization algorithms have been adapted in this work to serve in the process of eco-design
Hoarau, Quentin. "Out with the Pipes, in with the Plugs : On the Economics of the Energy Transition in the Automobile Sector Interactions between electric mobility and photovoltaic generation Network tariff design with prosumers and electromobility: Who wins, who loses Stranded to be? Diesel ban and used car markets. Coordination of abatements and policies with sector coupling technologies." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASI006.
Full textThe development of electric mobility is the main technological compromise that will allow the automobile sector to drastically reduce its emissions of greenhouse gases and air pollutants. From the ban of thermal vehicles to the integration of electric vehicles in the power sector, this dissertation investigates several economic aspects of this transition.First, it empirically studies the impacts of urban policies that limit the access of most polluting vehicles by analyzing the behavior of car sellers on second-hand markets. Then, it theoretically precises the optimal conditions of the electrification of the automobile fleet how governments may plan support policies for electric vehicles that take into account their interaction with the power system.Third, it investigates the interaction between electric mobility and photovoltaic energy. It develops a systematic framework that enlightens technical and economic conditions of synergy.Fourth, it discusses the distributional effects from tariff design of power network with both distributed energy resources and electric mobility
Kravtzoff, Ivan. "Optimisation d'un système hybride de génération d'énergie électrique permettant de minimiser la consommation et l'empreinte environnementale." Thesis, CentraleSupélec, 2015. http://www.theses.fr/2015SUPL0015/document.
Full textGrowing environmental issues and concerns have led to efforts to reduce CO2 and greenhouse effect pollutant emissions in the field of electric power generation. This has led Leroy Somer to investigate systems based on hybrid technologies to reduce genset fuel consumption and operating costs. A methodology is developed in this thesis to address issues of sizing hardware resources and their optimal use. The optimum energy management strategy is based on the dynamic programming algorithm of Bellman. It will be associated to a differential evolution optimization algorithm to optimize the design of the hybrid structure. The objective functions are obtained by developing energetic and economic models. Through this method, we show that the benefits of a hybrid generator are strongly related to its use. In cases where the generator is used on profiles with low load factors, the benefits will be significant. It will be very important to have good knowledge of load profiles applications before sizing the whole structure of the hybrid generator. A prototype of this system has been developed and has confirmed simulation results
Al-Qaseer, Firas Abdulmajeed. "Scheduling policies considering both production duration and energy consumption criteria for environmental management." Thesis, Université Clermont Auvergne (2017-2020), 2018. http://www.theses.fr/2018CLFAC028/document.
Full textWe present the challenges of environmental management and underline the importance of an energy saving policy for companies. We propose a model to determine the energy balance of manufacturing by integrating the different productive and non-productive phases. We define two purposes for minimizing production time and energy consumption. We apply this model to the scheduling of flexible job-shop workshops. To determine the optimal solution we use two types of methods: - The first is genetic algorithms. We propose different types of algorithms to solve this multi-criteria problem. For example, we propose to develop two populations to minimize the energy consumed and the production time, and to cross them to achieve the overall objective. - The second is constraint programming. We propose to find the optimal solution by developing a double tree to evaluate the energy consumed and the production time. We build our algorithm starting from the tasks to be performed on the machines or from the machines that will perform the tasks. We discuss the construction of the Pareto front to get the best solution.We finish by comparing the different approaches and discussing their relevance to deal with problems of different sizes. We also offer several improvements and some leads for future research
Raoul, Dubos Marine. "Conflits dans les territoires de frontière agricole de la canne à sucre : dynamique de recomposition socio-spatiale dans le sud du Mato Grosso do Sul, Brésil." Thesis, Paris 8, 2017. http://www.theses.fr/2017PA080021/document.
Full textBrazil registered an important increase in production of sugar cane from the years 2000. The sugar ethanol sector performs such cultivation in order to produce sugar, alcohol and electric power. The increase in production comes in response to the new global order, as the search for alternatives to fossil fuels, or the global demand for food. This situation encourages the arrival of new investors in the sugar market and the agrofuel production. So, it would be appropriate to "crises convergence" (environmental, food and energy) an attempt to conceal a way of renewing the agribusiness image, based on "greening" their practices and speeches production, seeking social acceptance and continuance of its expansion? In fact, conflict since the implementation of the sugar cane border territories agricultural sector, as occurs in the Dourados region, located in the State of Mato Grosso do Sul, West-Central Brazil. These conflicts there are relation with the recently plants installed close to local actors, with different objects and involving a variety of agent’s groups. To question the local actors understand the actor’s social claims and their effect on the fight for territory. The conflicting processes study allows to reveal the relations of power and control issues of space resulting in the transformation of the territories affected by an activity establishment
O Brasil registrou um importante aumento da produção de cana-de-açúcar a partir dos anos 2000. O setor sucroenergético realiza tal cultivo a fim de produzir açúcar, álcool e energia elétrica. A elevação da produção vem em resposta à novas injunções globais, como a busca de alternativas aos combustiveis fósseis, ou a demanda mundial por alimentos. Essa conjuntura incentiva a chegada de novos investidores no mercado do açúcar e dos agrocombustiveís. Do mesmo modo que esses investimentos, impulsionados pelo fenômeno de “corridas pelas terras” na escala mundial, provocaram expressões de preocupação de parte da sociedade civil, associações e pesquisadores em ciências sociais, a expansão da cana-de-açúcar tambem levanta questionamentos sobre os objetivos seguidos pelas empresas e as repercusões locais. Assim, seria a conveniente “convergência das crises” (ecolôgica, energética e alimentar) uma tentativa de dissimular uma forma de renovação da imagem do agronegócio, baseada na “ecologização” de suas práticas e na produção dos discursos, buscando aceitação social e continuidade de sua expansão? De fato, surgem conflito desde a implementação do setor nos territórios de fronteira agrícola da cana-de-açúcar, como ocorre na região de Dourados, localizada no Estado do Mato Grosso do Sul. Esses conflitos confrontam as usinas recentes instaladas aos atores locais, com diferentes objetos e envolvendo uma variedade de grupos de atores. Questionar os atores locais, testemunhando as transformações que vivem os territórios, e os atores ligados ao desenvolvimento do setor, permite revelar os problemas causados pela implementação das usinas. Permite ainda, entender as reivindicações sociais dos atores e suas consequëncias sobre as lutas pelo território. O estudo dos processos conflituosos permitem revelar as relações de poder e as questões de controle do espaço originando a transformação dos territórios influenciados pelo estabelecimento de uma atividade
Ben, Ayed Ramzi. "Eco-conception d’une chaine de traction ferroviaire." Thesis, Ecole centrale de Lille, 2012. http://www.theses.fr/2012ECLI0009/document.
Full textWith the introduction of different environmental standards like ISO 14001, concerns of manufacturers in railway industry are more and more oriented to the design of green products. One important issue when designing such products is the control of the cost impact and the evaluation of the price which consumers agree to pay for a reduced environmental footprint.Eco-design of railway train presents several challenges for the designer. The first one is the complexity of the life cycle analysis of such components. The second challenge is the necessity of consideration of several environmental impacts in design stage given the number of impacts. Finally, railway components have different models with different granularity which can be used in the process of eco-design. To overcome these problems we propose in this work a method which involves two steps. The first one is to simplify the LCA of the railway train using environmental management software and take the opportunity to build a malleable model to calculate eleven impacts. The second step, is to aggregate these impacts for a single indicator which is considered later as environmental criterion in the eco-design process. In order to investigate optimization tools, the eco-design problem is expressed into an optimization problem. Optimization algorithms are able to solve this problem and to find the optimal set of compromises between environmental criterion and the cost of the railway product. The set of compromises is given as a graph called the Pareto front. In our work the cost is expressed by the mass of the component and some optimization algorithms have been adapted in this work to serve in the process of eco-design