Dissertations / Theses on the topic 'Modèle de consommation d'énergie'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Modèle de consommation d'énergie.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Popiolek, Nathalie. "Modèle prospectif de consommation d'énergie dans l'agriculture : le cas de la fertilisation azotée a l'horizon 2010." Grenoble 2, 1993. http://www.theses.fr/1993GRE21027.
The first part of this thesis gives a critical overview of available forecasting methods. After this survey, the methodology chosen for the construction of the model is presented. This construction constitutes the second stage of this work. The "energy and nitrogen fertilization" system is defined (list of key variables for its evolution towards the year 2010 and analysis of their relationships) and then modelized highlighting the nitrogen fertilizers demand. The demand is determined for the year 2010 by the mean of a linear programming model (aropaj) based on farmers' cropping choices. This model, first used for short and middle terms is adapted for the long term (2010) by using peripheral models projecting the fixed factors (in the short term) of agricultural holdings and their way of producing. These projections are based on experts inquiries (delphi) constitutes the third part of this thesis. These scenarios constitute the patterns of simulation running on the linear programme to test the impact of the future common agricultural policy or the introduction of technological innovations
Erthal, Villela Lamounier. "Intervention étatique et crise du modèle énergétique brésilien : la maîtrise de l'énergie comme perspective." Paris 3, 1999. http://www.theses.fr/1999PA030061.
The brazilian government decided to intervene in petrobras and electrobras in order to face the challenge of rapid industrialization of the country and act upon the energetic sector. Those companies have experienced a great success since their creation, but are suffering the impact of serious problems since the crises of state in the 80's. The crises management in both companies had serious consequences in the energy consumption pattern. Both had lost their capacity of self-financing and had their consumption pattern distort. The market consumption then concentrates in a few activities and becomes irrational and obsolete in others. It was also observed that interdependence among: state strategy direction, the energy sector dynamics and the consumption structure. A vicious circle with evil effects has appeared during the crises contributing to the application of the neo-liberal polices. To break this circle a reform of the state and of the sector is required to impose a new technoadministrative reality to the brazilian production system
Glavatskaya, Olga. "Conversion d’énergie thermique en énergie électrique par les modules thermoélectriques en vue de réduire la consommation et les émissions polluantes." Caen, 2012. http://www.theses.fr/2012CAEN2028.
Nowadays, there is renewed interest of car manufacturers in the conversion of the wasted energy to increase the fuel efficiency of vehicle and the CO2 emissions. In this context, among several methods, direct conversion of exhaust heat to electricity by thermoelectric generator seems to be a credible option for the vehicle. This thesis work involves the analysis of thermoelectric generator integrated into the vehicle. A numerical model of a thermoelectric generator able to support transient analysis is developed. This dynamic model can be coupled with coolant circuit model, exhaust system model and electric network model of the vehicle. Thus, we studied the energy interaction between all these subsystems. A developed numerical model complies with the bond-graph modeling principle applied to multi-physical systems. The transient modelling enabled us to predict the thermoelectric system performance for the different drive cycles of the vehicle. Furthermore, optimization study of the design of the thermoelectric generator was carried out. The optimal geometry of device was justified by the exergy analysis in order to quantify the wastes and destructions of exergy within a thermoelectric system. Moreover, the frequency analysis approach was applied to capture the transient performance of a thermoelectric generator
El, Khoury Georges. "Etude et simulation de systèmes de climatisation adaptés aux véhicules hybrides." Paris, ENMP, 2005. http://www.theses.fr/2005ENMP1357.
This dissertation aims at analyzing the impact of the air-conditioning system on hybrid vehicles by using data of the additional fuel consumption due to MAC operation. Those data are obtained on roll benches (UTAC and CRF) and test benches (CEP and VALEO) dedicated to mobile air conditioning systems. Tests on Prius I show that energy savigs due to hybridization are compromised when the air conditioning system is driven by a mechanical compressor, which requires operation of the engine when the vehicle is stopped. Electrical and hybrid compressors have been tested. Air conditioning loops integrating those compressors are simulated via a set of MACLIB routines developed during this thesis in Matlab/Simulink language. MACLIB is then integrated in the ADVISOR simulator in order to evaluate additional fuel consumptions of the different air conditioning systems installed on a reference hybrid vehicle. Some simulations have been validated by tests performed on roll benches at UTAC, on the Prius II equipped with an electric compressor. Once MACLIB has been validated, comparative analyses of air conditioning systems either mechanical, or electrical, or hybrid (mechanical/electrical) installed on the reference vehicle, have been performed. Those analyses end by the evaluation of the annual additional fuel consumption of mobile air conditioning systems operating under two European climatic conditions
Hamzaoui, Khalil Ibrahim. "Contribution à la modélisation de la consommation d'énergie dans un dispositif mobile." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I030/document.
The main goal of this thesis is to model the power consumption of a particular application running on a mobile device. We propose a model of energy behavior monitoring, we also describe a methodology to identify the parameters of the model. To this end, we analyzed a collection of experimental data collected during my tour de France in an electric wheelchair. We applied statistical tools to obtain the parameters of the model. Finally, we validate the model by comparing the results with other experimental data.The first case study compares the evolution of the energy cost in the mobile environments of the different components of smartphones based on several energy models.- The second case study deals with the evaluation, the measurements of the energy cost consumed and the problems encountered in the methods used for the evaluation of energy consumption. For a better evaluation, the case study of energy behavior was introduced using the virtual machines.- The third case study is based on the treatment of the results of the measurements obtained during my tour of France in a connected electric wheelchair. The goal is to anticipate resource management, realizing measurements, and then tracking energy behavior in a real and diverse environment. The model can be used to define an optimal frequency in terms of energy consumption for specific situations without degrading the quality of service desired by the user
Ligeret, Christophe. "Réduction de la consommation électrique du contrôle-commande des machines automatisées." Rennes 1, 2010. https://tel.archives-ouvertes.fr/tel-00555655.
This thesis presents an analysis of energy consumption of control systems of automated machines. The main objective is to reduce energy consumption of control part. In this document, we present notions related with control systems and we develop methods and an energy consumption simulator which is an analysis tool of energy consumption. Thus, we make an analysis according 3 axes: energy consumption of each control part, consumption of control systems according to choice of components and consumption according to operating modes. So this work proposes an energy consumption methodology and makes it possible to show that energy consumption of control systems is often low with respect to energy consumed by actuators. However, it is possible to reduce by 2 energy consumption of control
Allibe, Benoit. "Modélisation des consommations d'énergie du secteur résidentiel français : amélioration du réalisme comportemental et scénarios volontaristes." Phd thesis, Paris, EHESS, 2012. https://tel.archives-ouvertes.fr/tel-00872403.
Long term modelling of residential energy consumption is most often realised by two kinds of models : engineering and economic. The former have the ability to precisely depict the energy demand infrastructure in a technical way but generally lack a necessary level of realism concerning households' behaviours when facing changes of economical context. The research undertaken during this thesis explains how elements of behavioural realism have been implemented in an engineering model of housing space heating consumption in order to combine both technical explicitness and behavioural realism. Results highlight the elasticity of space heating consumption with respect to a number of variables including technical performance, allowing the estimation of the rebound effect phenomenon at a national scale. The second part of the research is dedicated to the techno-economic modelling of households' energy efficient equipment investments. The results obtained from the model enabled the quantification of energy efficiency barriers concerning the main types of housing refurbishment and heating systems. Other results depict how market heterogeneity can be introduced in techno-economic models. These elements were implemented into a prospective model (BEUS), wich was developed during the thesis. Simulation results show that the increase of behavioural realism of engineering models makes it even more difficult to reach mid- and long-term national energy and climate policies targets. Finally, a discussion is proposed on the topic of energy tier-pricing and its fiscal equivalent - a bonus-malus on energy consumption - based on BEUS results
Chakir, Raja. "Analyse microéconométrique des substitutions inter-énergétiques : application au secteur bois et papier français." Toulouse 1, 2003. http://www.theses.fr/2003TOU10073.
The purpose of this thesis is to analyse interfuel substitution possibilities in the pulp and paper sector in France. The proposed models are useful to evaluate the outcome of price variations or an environmental policy. First, we provide an empirical application of the virtual price approach to the problem of cormer solutions in the case of panel data. The econometric model is an endogenous switching regime model which requires the evaluation of multivariate probability integrals. We estimate the random effect model by maximum likelihood using a panel of French plants from the paper and pulp industry. Next, we propose a Simulated Maximum Likelihood technique for estimation of the simultaneous equation demand system in the case of five forms of energy. Finally, our estimates are used to predict the outcome of an environmental policy aimed at reducing CO2 emissions in the paper and pulp industry. Results show that there are real interfuel substitution possibilities in this sector
Moréac, Erwan. "Optimisation de la consommation d’énergie et de la latence dans les réseaux sur puces." Thesis, Lorient, 2017. http://www.theses.fr/2017LORIS467/document.
Thanks to the technology’s shrinking, a considerable amount of memory and computing capacity can be embedded into a single chip. This improvement leads to an important increase of the bandwidth requirements, that becomes the bottleneck of chip performances in terms of computational power. Thus, designers proposed the Network-on-Chip (NoC) as an answer to this bandwidth challenge. However, the on-chip traffic growth allowed by the NoC causes a significant rise of the chip energy consumption, which leads to a temperature increase and a reliability reduction of the chip. The development of energy optimization techniques for NoC becomes necessary.The first part of this thesis is devoted to the study of NoCs power models in order to estimate accurately the consumption of each component. Then, we can identify which ones are the most power consuming. Hence, the first contribution of this thesis has been to improve the NoC power model by replacing the lilnk power model in a NoC simulator (Noxim) by a bit-accurate one (Noxim-XT). In this way, the simulator is able to consider Crosstalk effects, a physical phenomenon that increases links energy consumption. The second part of the thesis deals with NoC energy optimization techniques. Thus, our research of optimization techniques is focused on inter-router links since their energy contribution regarding the NoC dynamic energy is significant and the dynamic energy tends to stay prominent with the shrinking technology. We proposed two optimization techniques from the study of NoC links optimizations. These two techniques present different energy / latency compromises and a possible extension of this work could be the development of a transmission strategy in order to select the right technique according to the application requirements
Fauveau, Armelle. "Construction d'un système expert en économétrie : application à la demande d'énergie." Paris 2, 1992. http://www.theses.fr/1992PA020158.
The proper use of econometric softwares requires both statistical and economic skill. The main objective of this thesis is to provide the users of regression programs with assistance in the process of regression analysis, by means of expert system technology. We first built an expert system providing general econometric strategy. Then we considered the inclusion of the economic knowledge required to produce a consistent analysis ; we focused on energy demand modelling
Abdulalli, Abusaif. "Reseaux ad-hoc : étude de modèles de mobilité et de protocoles de routage minimisant la consommation d'énergie." Valenciennes, 2008. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/9d7396e4-4c5f-40f5-bee2-d336b156addc.
Wireless ad-hoc networks became more and more popular in the past few years, owing to their use of deployment. In such a network, the hosts (or nodes) exchange data packets via radio links, without resorting to any hierarchic scheme nor supervisory control. In fact, the data transfers are driven by special distributed routing protocols and each node may potentially contribute in the data transportation from some source to some destination. The main resulting problems are the node mobility (which complicate routing protocols), as well as the limitations of the available frequency bandwidth (and thus of the data flow rate) and of the available energy consumption (related to the more or less extended lifetime of batteries). Mobility, energy consumption minimization and suited routing protocols are the key points of our study. The existing mobility models have thus been looked over first and, using simulation, the characteristics of the corresponding modeled trajectories together with the effects on energy consumption have been studied. Next, the leading routing protocols have been detailed, their impact on energy consumption and the influence of node mobility have been considered (using again simulation). Finally, a new protocol, called LEMFN, has been introduced, which consists in the fusion and extension of two already known protocols, with the main objective of energy consumption reduction in mind. The new algorithm has been studied by simulation and compared to other ones
Hemery, Carine. "Prospectives à long terme de la consommation énergétique en transport de marchandises." Paris 1, 2009. http://www.theses.fr/2009PA010035.
Kouki, Meriem. "Maîtrise énergétique des systèmes de production : proposition d'un outil d'aide à la conception de modèles de simulation à évènements discrets intégrant l'énergie." Thesis, Nantes, 2017. http://www.theses.fr/2017NANT4072.
Todays, industries are compelled to innovate and improve their sustainability under economic, political and social pressure in a highly competitive market and within an increasing societal conscience towards environmental issues. In this context, several initiatives have been carried out at both academic and industrial levels to improve energy performance in the production phase. In parallel with technological advances, energy savings by production organization are not always exploited because of a lack of comprehension on the energy behavior of manufacturing systems. To solve this problem, Discrete Event Simulation is a reliable solution, but several barriers still prevent its industrial use: literature approaches lack genericity and reliable procedures for integrating energy consumption data in complex cases. The objective of our work is to propose a simulation tool allowing to predict the energy consumption of manufacturing systems, it serves as a tool to help decision-making to enhance energy performance and productivity usually considered as conflicting goals. This tool is designed following a generic and flexible approach to model and simulate workflows and energy flows in a single platform. In addition, a methodology for integrating complex energy consumption data, based on a stochastic approach, is proposed. Validation of our approach and our tool is carried out in the field of polymer processing
Ben, Atitallah Rabie. "Modèles et simulation des systèmes sur puce multiprocesseurs : estimation des performances et de la consommation d'énergie." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10019/document.
Multiprocessor system on chip (MPSoC) simulation in the first design steps has an important impact in reducing the time to market of the final product. However, MPSoC have become more and more complex and heterogeneous. Consequently, traditional approaches for system simulation at lower levels cannot adequately Support the complexity needed for the design of future MPSoc. ln this thesis, we propose a framework composed of several simulation levels. This enables early performance evaluation in the design flow. The proposed framework is useful for design space exploration and permits to find rapidly the most adequate Architecture/Application configuration. ln the first part ofthis thesis, we present an efficient simulation tool composed of three levels that offer several performance/energy tradeoffs. The three levels are differentiated by the accuracy of architectural descriptions based on the SystemC- TLM standard. ln the second part, we are interested by the MPSoC energy consumption. For this, we enhanced Our simulation framework with flexible and accurate energy consumption models. FinaIly in the third part, a compilation chain based on a Model Driven Engineering (MDE) approach is developed and integrated in the Gaspard environment. This chain allows automatic SystemC code generation from high level MPSoC modeling
Ben, Atitallah Rabie. "Modèles et simulation des systèmes sur puce multiprocesseurs : estimation des performances et de la consommation d'énergie." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10019.
Multiprocessor system on chip (MPSoC) simulation in the first design steps has an important impact in reducing the time to market of the final product. However, MPSoC have become more and more complex and heterogeneous. Consequently, traditional approaches for system simulation at lower levels cannot adequately Support the complexity needed for the design of future MPSoc. Ln this thesis, we propose a framework composed of several simulation levels. This enables early performance evaluation in the design flow. The proposed framework is useful for design space exploration and permits to find rapidly the most adequate Architecture/Application configuration. Ln the first part ofthis thesis, we present an efficient simulation tool composed of three levels that offer several performance/energy tradeoffs. The three levels are differentiated by the accuracy of architectural descriptions based on the SystemC- TLM standard. Ln the second part, we are interested by the MPSoC energy consumption. For this, we enhanced Our simulation framework with flexible and accurate energy consumption models. FinaIly in the third part, a compilation chain based on a Model Driven Engineering (MDE) approach is developed and integrated in the Gaspard environment. This chain allows automatic SystemC code generation from high level MPSoC modeling
Zaraket, Toufic. "Stochastic activity-based approach of occupant-related energy consumption in residential buildings." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2014. http://www.theses.fr/2014ECAP0033/document.
Résumé en Anglais : The building sector is considered as a major energy consumer and pollution source among all economic sectors. It accounts for important shares, ranging between 16 and 50 percent, of national energy consumption worldwide. Reducing these consumptions and emissions is thus an important step towards sustainable development. Recently, the shift towards constructing low-consuming and nearly zero-energy buildings lead to further requirements with regard to performance and sustainability, and thus caused the design process of buildings to be more complex. Occupants’ behavior is now considered as a key determinant of building’s energy performance especially in the case of green buildings. Yet, energy simulation tools used in buildings industry nowadays are not capable of providing accurate estimations of occupant-related energy demands. Therefore, buildings and energy experts are devoting considerable efforts on developing more precise methods for modeling and forecasting occupants influence on whole building performance. Such models can provide accurate energy estimates and can assess future consumption variability. Consequently, building experts may improve their technical solutions, ameliorate their service performances, and promote targeted incentives. The objective of this dissertation is to propose a model for forecasting occupant-related energy consumption in residential buildings, while accounting for variability in consumption patterns due to diversity in occupants’ socio-demographic and economic profiles. A stochastic activity-based approach is thus adopted. By activity-based, it means that energy consumption of a household is estimated by summing up the energy use of different activities performed (such as cooking, washing clothes, etc.). The stochastic nature of the model is due to the probabilistic mapping established between household attributes from one side (household type, number of occupants, etc.) and the corresponding appliance ownership, appliance characteristics and power rating, and activity quantities from the other side. In order to establish these stochastic relations, a fairly sufficient number of households’ characterizing attributes is taken into account. The proposed model is applied for two domestic activities, namely watching TV and washing laundry. Three types of Monte Carlo simulations are performed to provide energy estimates for these two activities: for a given specified household, for randomly generated households with constraints, and for totally random population-wise households. A comparison between model’s simulation results and real measured energy consumption data enables validating the model for the two considered activities. A generalization framework of the modeling approach for other domestic activities is sketched, and its possible integration into buildings design process is discussed and illustrated through a number of examples
Jaunâtre, Kévin. "Analyse et modélisation statistique de données de consommation électrique." Thesis, Lorient, 2019. http://www.theses.fr/2019LORIS520.
In October 2014, the French Environment & Energy Management Agency with the ENEDIS company started a research project named SOLENN ("SOLidarité ENergie iNovation") with multiple objectives such as the study of the control of the electric consumption by following the households and to secure the electric supply. The SOLENN project was lead by the ADEME and took place in Lorient, France. The main goal of this project is to improve the knowledge of the households concerning the saving of electric energy. In this context, we describe a method to estimate extreme quantiles and probabilites of rare events which is implemented in a R package. Then, we propose an extension of the famous Cox's proportional hazards model which allows the etimation of the probabilites of rare events. Finally, we give an application of some statistics models developped in this document on electric consumption data sets which were useful for the SOLENN project. A first application is linked to the electric constraint program directed by ENEDIS in order to secure the electric network. The houses are under a reduction of their maximal power for a short period of time. The goal is to study how the household behaves during this period of time. A second application concern the utilisation of the multiple regression model to study the effect of individuals visits on the electric consumption. The goal is to study the impact on the electric consumption for the week or the month following a visit
Daoud, Rasha. "La consommation énergétique domestique pour le chauffage en France." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1A007/document.
We analyze in this work the determinants of the energy source for heating choice and its impact on the households living in France energy consumption and expenses. This thesis is written in five chapters. In the first we show the lack of data relative to home's energy consumption and we present a set of descriptive statistics showing some features of the energy consumption and expenses in the French dwellings. In the second chapter we describe in details the utilization of energy for heating in the French residential park and we make use of a discrete choice model to determine the factors intervening in the choice of heating equipments.In the third chapter we analyze the determinants of the energy demand for heating and the overall energy expenses in all the French dwellings by estimating a series of econometric models inspired by Dubin and Mcfadden (1984) used to deal with the selection biais.In the fourth chapter we concentrate on the rental sector to determine its singularities on the one hand, and, on the other hand, to find out the features which distinguish the social sector from the private sector concerning the heating equipment choice and the energy consumption and expenses levels. And last but not least, the fifth chapter is dedicated to lay the foundations of a theoretical model formalizing the behavior of all the agents toward energy when the heating bill is collective. It is worth noting that so far, there isn't any model dealing with this question
Peigné, Pierre. "Etude d'un système combiné de ventilation et de chauffage au bois dans les bâtiments à basse consommation d'énergie." Phd thesis, Université de La Rochelle, 2012. http://tel.archives-ouvertes.fr/tel-00816015.
Cordahi, Khoury Marlène. "Evaluation technique et économique de différentes solutions pour le confort thermique et la réduction de la consommation énergétique dans le bâtiment au Liban." Paris, ENMP, 2005. http://www.theses.fr/2005ENMP1334.
Energy use intensity in lebanon is comparably high with other contries in the middle east, and its primary supply is almost totally dependent on imported combustibles. Excessive use of energy constitutes an economic burden on both the government and the end consumers. In the field of energy, the government is recently taking an initiative to co-ordinate the various concerned parties' efforts and to establish bodies to enable integrated resources planning. In addition, this form of energy use is a cause of environnemental degradation originating from thermal energy plants and transportation sector mainly, which emit green house gases (ghg), basic causative agents of global warming. Lebanon consumes around 5000 ktoe as a primary energy. 97% of this is imported, mainly as polluting oil products. The remaining 3% of the energy consumption only is renewable energy. In addition, the energy intensity in the country is over 0,62 toe/1000usd, which is 2,2 times higher than in developing countries despite the low consumption per capita and a structure of an economic sector based on light industries. All this is due to a lack of a national politic for a rational use of energy and especially in transport. This project aims to evaluate solutions to minimize the annual consumption of energy and the improvement of comfort in a residential apartment on the lebanese coast. An existing apartment in a current floor will be chosen in a well defined environment. Different kind of passive insulation will be introduced and their impact on the energy consumption will be studied. Additional equipments on the heating system will be also evaluated
Djeema, Ahcene. "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." Paris, ENMP, 2009. http://pastel.paristech.org/5303/01/Thèse_ADjemaa.pdf.
Among the energy users in France and Europe, some industrial sectors are very important and should have a key role when assessing the final energy demand patterns in the future. The aim of our work is to apply a prospective model for the long range analysis of energy/technology choices in the industrial sector, focussing on the energy-intensive sectors. The modelling tool applied in this study is the TIMES model (family of best known MARKAL model). It is an economic linear programming model generator for local, national or multi regional energy systems, which provides a technology-rich basis for estimating energy dynamics over a long term, multi period time. We illustrate our work with nine energy-intensive industrial sectors: paper, steel, glass, cement, lime, tiles, brick, ceramics and plaster. It includes a detailed description of the processes involved in the production of industrial products, providing typical energy uses in each process step. In our analysis, we identified for each industry, several commercially available state-of-the-art technologies, characterized and chosen by the Model on the basis of cost effectiveness. Furthermore, we calculated potential energy savings, carbon dioxide emissions' reduction and we estimated the energy impact of a technological rupture. This work indicates that there still exists a significant potential for energy savings and carbon dioxide emissions' reduction in all industries
Poirier, François. "Théorie et mise en oeuvre de la fonction Translog dans la modélisation énergétique." Paris 2, 1987. http://www.theses.fr/1987PA020088.
Destais, Ghislaine. "La modélisation des interactions énergie-économie : une analyse centrée sur le cas français." Grenoble 2, 1989. http://www.theses.fr/1989GRE21023.
Energy-economy models intend to analyse the interactions between the evolution of the energy sector and the economy as a whole. There are three important energy-economy models in france : mini-dms energie, hermes and melodie. The main purpose of this thesis is to clarify the way these models work, to explain their common features and differences, and to analyse their respective explanatory potential. The thesis is composed of the following elements : - a synthesis of theoretic energy-economy models, - a panorama of the modeling tools which have influenced the french energy-economy models (energy modeling, input-output analysis, neokeynesian macroeconomic modeling, neoclassical energy-economy models) - a detailed comparative study of the structure of the french energy-economy models and an assesment of their field of validity
Royer, Sullivan. "Modélisation de bâtiments et de leurs zones thermiques : vers une procédure générique." Perpignan, 2014. http://www.theses.fr/2014PERP1253.
Filfli, Sila. "Optimisation bâtiment / système pour minimiser les consommations dues à la climatisation." Phd thesis, École Nationale Supérieure des Mines de Paris, 2006. http://pastel.archives-ouvertes.fr/pastel-00002199.
Dahmane, Menad. "Gestion, optimisation et conversion des énergies pour habitat autonome." Electronic Thesis or Diss., Amiens, 2015. http://www.theses.fr/2015AMIE0025.
This dissertation presents a research project that consists of the development of a device that is able to supply an isolated house with electricity and to make it autonomous by using renewable energy sources. The multi-source system considered in this thesis includes a wind turbine and photovoltaic panels as main sources, Lithium-Ion batteries for storage and Diesel generator as emergency source. In order to make a contribution considering problems of energy management for hybrid systems as well as problems in controlling energy conversion chains, we are suggesting a power flow management strategy which is based on the prediction of the potential energy available on the veryshort-term. That strategy aims at generating optimal references in order to insure the electrical autonomy of the house. For this, we present firstly, a sizing and modelingof the different modules of the multi-source system. This modelling allowed us subsequently to develop a static and dynamic state feedback control strategies by using LMI techniques for pole placement in order to increase the transition performancesfor reference monitoring. The proposed management algorithm as well as the developed control strategies for tracking and maximizing power is validated in simulation using data obtained through real measurements. After having results in simulationusing Matlab/Simulink, we have validated them experimentally by conducting tests via a multi-source platform equipped with dSPACE cards of our laboratory
Wan, Hang. "Matériaux communicants : modélisation et gestion de la consommation d’énergie." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0131.
With the popularization of the Internet of Things, more and more intelligent products appear in our daily life. The McBIM project (Materials communicating with the Building Information Modelling) aims to design a new type of “communicating concrete”: concrete elements equipped with embedded wireless sensor network (WSN). This communicating concrete can measure the physical environment, store the information and exchange data with BIM platforms. One objective is to demonstrate the usefulness of the concept over the whole building lifecycle and the energy management is one of the facing challenges. Meanwhile, the product, user information as well as the large amount of monitoring data bring challenges regarding data management. To solve both issues, this work proposes to couple the physical communicating concrete to an external, digital and intelligent system in order to extend network lifetime. In this thesis, these physical and digital parts are both studied. In the physical part, energy saving methods are reviewed, to understand how to extend the network lifetime. Network routing, in-network data processing and time synchronization are considered to build an energy model for periodic data collection. This energy model is validated with an Arduino-XBee based platform. The experiment shows that the analytic energy estimation model provides an approximate but accurate remaining energy level. It can be used online by nodes or remotely by user to the remaining energy. Energy-related data and collection modes can be managed by the digital part, based on a multi-agent system (MAS). The MAS can not only store monitoring data of communicating elements but also provide energy efficient data collection or organization strategies. Composition of communicating elements may happen in construction or exploitation lifecycle’s phase to reduce energy consumption. A recursive multi-agent architecture is proposed to meet high flexibility requirements. This multi-agent system is implemented on a 3D simulation platform to visualize the communicating concrete and verify the usefulness of our analytic energy model. The recursive multi-agent architecture provides energy efficiency solutions to extend network lifetime and respond to environmental changes
Kammoun, Nadia. "Analyse de l'intensité énergétique dans les industries manufacturières de quatres provinces canadiennes de 1976 à 2006." Master's thesis, Université Laval, 2011. http://hdl.handle.net/20.500.11794/22606.
Wu, David. "Modèles d’optimisation pour la gestion de consommation d’énergie multi-flux." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS221.
The large-scale automated collection of energy consumption data raises new optimization problems. The issue addressed in this thesis is to propose solutions for modeling and solving optimization models for multi-stream energy consumption management. The consumption data are represented as a time series.We first develop deterministic and robust models for the optimization of electricity contracting. This problem is formulated as the minimization of a convex objective function under special structure constraints (order constraints); it is solved by a new efficient algorithm that considerably reduces the computational effort, in the presence of a large amount of data, needed to evaluate the objective function. We then present deterministic and robust models around the optimal management of water networks using an automated strategy based on the use of trigger levels. We also show that the problem can be reduced to smaller daily problems without losing too much accuracy. Numerical results are presented and reveal the possibility of strong savings in the different energy systems studied
Diane, Ibrahima. "Optimisation de la consommation d'énergie par la prise en compte de la redondance de mesure dans les réseaux de capteurs." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/3087/.
Wireless Sensor Networks (WSN) are used today in many applications that differ in their own objectives and specific constraints. The application areas for wireless sensor networks are various: home automations, health care services, military domain, and environment monitoring. However the common challenge in designing WSN applications comes from the specific constraints of sensors because of their limited physical resources such as weak computational capability, small memory capacity and especially limited battery lifetime. This thesis aims to develop techniques to improve the energy efficiency of dense wireless sensor networks. Two new techniques are proposed. The first approach developed in this thesis concerns the energy conservation based on measurement redundancy. The proposed MR-LEACH (Measurement Redundancy aware LEACH) protocol address the main issue resulting from the absence of a energy efficient management within the large hierarchical wireless Sensor networks. MR-LEACH is an extension to the well-known LEACH protocol to improve energy consumption in cluster-based WSNs. In addition to cluster formation according to LEACH protocol, the nodes are grouped taking into account their redundancy and only a single node transmits data in each redundant group. This method have the advantages of presenting a low energy consumption, increasing the network lifetime and decreasing the end-to-end delay. OER (Optimization of Energy based on Redundancy) protocol is the second contribution of this thesis. There are two main objectives. Firstly, we propose a partitioning method for sensor networks based on sensing models. Sensing models estimate the manner in which a node is able to detect the phenomena. Secondly, we propose a search algorithm for finding an optimal partitioning. We focused on the variation of an objective function. OER determines whether a partitioning obtained is best to minimize the objective function. Thereafter, the impact of optimal solution search on network lifetime has been investigated
Alves, da Silva Lucas. "Estimation de la consommation d'énergie et du taux d'erreur bit d'un système Bluetooth LE basée sur la modélisation hiérarchique d'un amplificateur de puissance à 2,4 GHz." Nice, 2011. http://www.theses.fr/2011NICE4103.
The different results presented in this thesis focus on considering the energy consumption, during the development of hierarchical models for the design and verification of complex electronic systems. A wireless communication system was developed, complying to the Bluetooth Low-Energy (B-LE) standard, to estimate the whole system’s energy consumption, during the development phases. Initially, the energetic behaviour of the digital segment was studied, following the virtual prototyping approach. At the network level, an analysis of the different scan and advertisement strategies could be conducted, considering the device’s average power consumption as the optimization factor. Following, the radio transceiver’s modelling, using behavioural blocks, allows the estimation of the whole system’s energy consumption, as well as its influence over the system’s bit-error rate (BER). Finally the design of a power amplifier is presented, starting with its specification, through the architectural exploration and choice, until the circuit’s design and tape-out. Two methods are then proposed for the extraction of the power consumption, leading to refined accurate behavioural models, with minimal increase in simulation times
Endravadan, Mala. "Régulation des systèmes de chauffage et de climatisation basée sur la sensation thermique humaine : impact sur la consommation d'énergie dans les bâtiments." Toulouse 3, 2006. http://www.theses.fr/2006TOU30003.
The thermal comfort of an individual depends on indoor conditions that can be controlled. However, changes in activity or clothing adjustments are difficult to control and measure in the field experiments. Behavioural actions undertaken by the occupant to overcome the discomfort could be varying and may have diverse consequences. Sometimes these actions are beneficial to the occupant, although often they lead to disastrous amounts of energy consumption. Hence, it becomes crucial to consider the human behaviour and the thermal inertia of the building. The creation of numerical models is useful to study the coupling between these two components and to evaluate the effects of behaviour on comfort and energy consumption. The simulations of the whole system were conducted using TRNSYS software
Bramas, Quentin. "Réseaux de capteurs sans fil efficaces en énergie." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066309/document.
A wireless sensor network is an ad-hoc network connecting small devices equipped with sensors. Such networks are self-organized and independent of any infrastructure. The deployment of a WSN is possible in areas inaccessible to humans, or for applications with a long lifetime requirement. Indeed, devices in a wireless sensor network are usually battery-powered, tolerate failure, and may use their own communication protocols, allowing them to optimize the energy consumption. The main application of WSNs it to sense the environment at different locations and aggregate all the data to a specific node that logs it and can send alerts if necessary. This task of data aggregation is performed regularly, making it the most energy consuming. As reducing the energy consumed by sensor is the leading challenge to ensure sustainable applications, we tackle in this thesis the problem of aggregating efficiently the data of the network. Then, we study lifetime evaluation techniques and apply it to benchmark existing energy-centric protocols
Dahmane, Menad. "Gestion, optimisation et conversion des énergies pour habitat autonome." Thesis, Amiens, 2015. http://www.theses.fr/2015AMIE0025/document.
This dissertation presents a research project that consists of the development of a device that is able to supply an isolated house with electricity and to make it autonomous by using renewable energy sources. The multi-source system considered in this thesis includes a wind turbine and photovoltaic panels as main sources, Lithium-Ion batteries for storage and Diesel generator as emergency source. In order to make a contribution considering problems of energy management for hybrid systems as well as problems in controlling energy conversion chains, we are suggesting a power flow management strategy which is based on the prediction of the potential energy available on the veryshort-term. That strategy aims at generating optimal references in order to insure the electrical autonomy of the house. For this, we present firstly, a sizing and modelingof the different modules of the multi-source system. This modelling allowed us subsequently to develop a static and dynamic state feedback control strategies by using LMI techniques for pole placement in order to increase the transition performancesfor reference monitoring. The proposed management algorithm as well as the developed control strategies for tracking and maximizing power is validated in simulation using data obtained through real measurements. After having results in simulationusing Matlab/Simulink, we have validated them experimentally by conducting tests via a multi-source platform equipped with dSPACE cards of our laboratory
Castagnetti, Andrea. "Étude de la gestion de l'autonomie en énergie d'objets communicants sans fil." Nice, 2012. http://www.theses.fr/2012NICE4059.
Wireless Sensor Networks are composed of nodes equipped with a computational unit, sensors and a radio transceiver. Energy consumption is a major challenge in the WSN domain, and energy efficient solutions are required because the nodes carry a limited amount of power. Energy harvesting technologies can be used to scavenge energy from the environment, thus prolonging the lifespan of a WSN node. The goal of this thesis is on power management techniques
Martinez, Nathalie. "Dans quelle mesure l'internalisation des coûts externes peut-elle influencer l'évolution de la répartition modale du trafic de marchandises en France?" Paris 1, 1997. http://www.theses.fr/1997PA010054.
In France, since 1965 the domestic land freight transport evolution is characterized by an average increase of the traffic of 1,3% per year (the traffic is evaluated with "tons-kilometres" units). Today, the truck freight transport amply benefits from this global freight transport increase, being responsible for nearly 70% of the total domestic freight transport and therefore representing worrying risks for environment: atmospheric and sound pollution, motorways and trunk roads congestion and last but not least, car accidents with their consequences. The objective of this thesis is to evaluate the impact of an external costs internalisation on the modal freight transport choice, in france. This work aims at checking whether the cost increase that would result from an external costs internalisation would be sufficient enough to change the habits of the loaders in favor of rail freight transport. The first part is dedicated to the consequences of the harmful emissions that truck freight transport induce on environment. In a context of a highly probable increase of the global freight traffic, an attempt is therefore made to estimate the impact of truck freight transport increase on environment as well as the degree of substitution between rail and truck that would be necessary to arrest the damage to the environment. The second part consists in measuring the impact of the external costs internalisation on both the freight traffic and it's modal choice. With the help of an econometric model, various simulations are made to evaluate the evolution of the freight traffic according to different assumptions made on cost increases in the sector of the truck freight transport. In the third part, the author wonders about the steps that could be adopted by 2010 and that, associated to the taxation system, could incite loaders either to reduce their trade needs or to transfer a part of their traffic on the rail mode
Abril, Garcia Ana Belen. "Estimation et optimisation de la consommation dans les descriptions architecturales des systèmes intégrés complexes." Paris 6, 2005. http://www.theses.fr/2005PA066115.
Choungmo, Fofack Nicaise Éric. "Sur des modèles pour l'évaluation de performance des caches dans un réseau cœur et de la consommation d'énergie dans un réseau d'accès sans-fil." Phd thesis, Université Nice Sophia Antipolis, 2014. http://tel.archives-ouvertes.fr/tel-00968894.
Vu, Thanh Tung. "Modèles spatiaux pour la planification cellulaire." Electronic Thesis or Diss., Paris, ENST, 2012. http://www.theses.fr/2012ENST0043.
Nowadays, cellular technology is almost everywhere. It has had an explosive success over the last two decades and the volume of traffic will still increase in the near future. For this reason, it is also regarded as one cause of worldwide energy consumption, with high impact on carbon dioxide emission. On the other hand, new mathematical tools have enabled theconception of new models for cellular networks: one of these tools is stochastic geometry, or more particularly spatial Poisson point process. In the last decade, researchers have successfully used stochastic geometry to quantify outage probability, throughput or coverage of cellular networks by treating deployment of mobile stations or (and) base stations as Poisson point processes on a plane. These results also take into account to impact of mobility on the performance of such networks. In this thesis, we apply the theory of Poisson point process to solve some problems of cellular networks, in particular we analyze the energy consumption of cellular networks. This thesis has two main parts. The first part deals with some dimensioning and coverage problems in cellular network. We uses stochastic analysis to provide bounds for theoverload probability of OFDMA systems thanks to concentration inequalities and we apply it to solve a dimensioning problem. We also compute the outage probability and handover probability of a typical user. The second part is dedicated to introduce different models for energy consumption of cellular networks. In the first model, the initial location of users form a \PPP\ and each user is associated with an ON-OFF process of activity. In the second model, arrival of users forms a time-space \PPP. We also study the impact of mobility of users by assuming that users randomly move during its sojourn. We focus on the distribution of consumed energy by a base station. This consumed energy is divided into the additive part and the broadcast part. We obtain analytical expressions for the moments of the additive part as well as the mean and variance of the consumed energy. We are able to find an error bound for Gaussian approximation of the additive part. We prove that the mobility of users has a positive impact on the energy consumption. It does not increase or decrease the consumed energy in average but reduces its variance to zero in high mobility regime. We also characterize the convergent rate in function of user's speed
Riederer, Peter. "Modèle de zone adapté aux essais de régulateurs de systèmes de chauffage et de climatisation." Phd thesis, École Nationale Supérieure des Mines de Paris, 2002. http://pastel.archives-ouvertes.fr/pastel-00000632.
Boucharel, Paul. "Conception des lois de commande optimales pour l'amélioration de l'efficacité globale d'une chaîne de traction automobile." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT060H.
The main aim of the study is to determine the minimal fuel consumption of a parallel hybrid vehicle that fulfill the driver's request. First, a model representing the energy flows inside the vehicle was set. Then local control algorithms were developed to determine the optimal gear ratio and torque repartition between the motors by minimizing a criterion including consumption and driveability aspects. A second point of the thesis consists in extracting the optimal behavior of the car on a planned trip. A global optimization that computes the minimal consumption on the planned trip was developed. Considering a vehicle with a navigation system, the analysis of the results allows to improve the gear ratio and the battery charging management of the local algorithms. Fast prototyping tests and vehicle tests were made to validate this approach
Roux, Baptiste. "Methodology and tools for energy-aware task mapping on heterogeneous multiprocessor architectures." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S129/document.
During the last decade, the design of embedded systems was pushed to increase computational power while maintaining low energy consumption. As an example, autonomous vehicles such as drones are a representative application domain which combines vision, wireless communications and other computation intensive kernels constrained with a limited energy budget. With the advent of Multiprocessor System-on-Chip (MpSoC) architectures, simplification of processor cores decreased power consumption per operation, while the multiplication of cores brought performance improvement. However, the ''dark silicon'' issue led to the benefit of augmenting programmable processors with specialized hardware accelerators and to the rise of Heterogeneous MpSoC (HMpSoC) combining both software (SW) and hardware (HW) computational resources. For these heterogeneous architectures, performance and energy consumption depend on a large set of parameters such as the HW/SW partitioning, the type of HW implementation or the communication cost between HW and SW cores therefore leading to a huge design space. In this thesis, we study how to reduce the development and implementation complexity of energy-efficient applications on HMpSoC. Multiple contributions are proposed to enhance Design Space Exploration (DSE) tools with energy objectives. First, a formal definition of HMpSoC structure is introduced alongside with a generic representation focused on the memory hierarchy. Then, a fast power modelling tool is proposed and validated on several applications. This power model separates the power sources in three families (static, dynamic computation and dynamic communication) and computes their contributions on global consumption independently. With a fine grain communications study, this approach rapidly computes energy consumption for a given application mapping on a HMpSoC. In a second time, we propose a methodology for energy-driven accelerator exploration on HMpSoC. This method builds upon the previous power model coupled with an Mixed Integer Linear Programming (MILP) formulation and enables to efficiently select HW accelerators and HW/SW partitioning which achieve energy efficient-mapping of a tiled application. The experiments involved in these contributions show the complexity of DSE validation process on a wide range of applications and architectures. To address these issues, we introduce a HMpSoC simulator embedding a power model to monitor application execution. Properties of targeted architectures are described, at run-time with the previous generic representation model. Furthermore, this simulator is coupled with an application generator framework that could build an infinite set of representative applications following predefined computation models. The obtained applications could then be enriched with mapping directive and executed on the simulator. This combination enables to ease the research and validation of new DSE algorithms targeting energy-aware application mapping on a wide range of HMpSoC architectures
Bontemps, Stéphanie. "Validation expérimentale de modèles : application aux bâtiments basse consommation." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0337/document.
Construction of low, passive and positive energy buildings is generalizing and existing buildings are being renovated. For this reason, it is essential to use simulation in order to estimate, among other things, energy and environmental performances reached by these new buildings. Expectations regarding guarantee of energy performance being more and more important, it is crucial to ensure the reliability of simulation tools being used. Indeed, simulation codes should reflect the behavior of these new kinds of buildings in the most consistent and accurate manner. Moreover, the uncertainty related to design parameters, as well as solicitations and building uses have to be taken into account in order to guarantee building energy performance during its lifetime.This thesis investigates the empirical validation of models applied to a test cell building. This validation process is divided into several steps, during which the quality of the model is evaluated as far as consistency and accuracy are concerned. Several study cases were carried out, from which we were able to identify the most influential parameters on model output, inspect the influence of time step on the empirical validation process, analyze the influence of initialization and confirm methodology’s ability to test the model
Tehrani, Nejad Moghaddam Alireza. "Impact de l’évolution de la demande de produits pétroliers sur la consommation d’énergie et les émissions de CO2 des raffineries." Dijon, 2008. http://www.theses.fr/2008DIJOE007.
The French refining industry is in a paradoxical situation. Although the energy efficiency of the refineries have been significantly improved their CO2 emissions are continuously increasing and this trend will be kept in future. The origin of this paradox steams in the profound modification in the demand structure (in terms of quantity and quality) of the oil products. The objective of this dissertation is to provide answers to these paradoxical questions. This objective is achieved and can be summarized in three points: (1) the introduction of linear programming to the prospective and retrospective life cycle assessment analysis (2) the evaluation of the impact of tightening the sulfur specification on the marginal cost and marginal CO2 contribution of oil products (3) the assessment of the average CO2 coefficients for oil products useful in the life cycle assessment studies
Romary, David. "Etude technico-économique des systèmes de production et distribution de chaleur et de force : application au tertiaire." Nancy 1, 2001. http://www.theses.fr/2001NAN10230.
Alhaj, Hasan Ola. "Optimization of building energy consumption using simplified models and new control methods." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10162/document.
With the highly developing concerns about the future of energy resources, the optimization of energy consumption becomes a must in all sectors. A lot of research was dedicated to buildings regarding that they constitute the highest energy consuming sector mainly because of their heating needs. Many proposals of new strategies to minimize building consumption were done. These proposals vary between recommending better insulation, advising change in occupants' behavior and changing the heating control management. This thesis proposes a new control method that helps minimizing the heating consumption and expenses. This method generates an energy plan over a defined prediction horizon respecting the occupants’ thermal comfort. It is based on the application of Monte Carlo method, i.e., a random generator for the heating system scenarios. The aim is to determine the optimal heating plan for the prediction horizon that fulfills the constraints regarding the following three factors: • The thermal comfort of occupants; • The minimization of the energy consumption/expenses; • Load shifting. However, to test this method, an identification of the building thermal behavior was needed. Thus, a building thermal model to simulate the building behavior was developed. This model was meant to be simplified in order to better integrate it in the control process. Furthermore, a new parameter estimation approach as well as a real time temperature control method are presented to ensure the implementation of the optimal predicted plan
Marie, Stéphane. "Routage multi-critère des navires à propulsion hybride." Rennes, INSA, 2010. http://www.theses.fr/2010ISAR0022.
The work has been carried out within the project Grand Large the aim of which is to introduce an automated system of sail adjustment especially for trawlers and coasters. In this study sail-assisted motor vessels weather routing is investigated to establish the most economical route by applying available information of the ship behavior regarding the encountered sea-conditions. To derive the vessel's fuel use on a route, a fuzzy logic model is constructed through an automated identification process. Only data collected from actual integrated bridge measurements systems is used. Fuzzy modeling is a framework providing a flexible and transparent athematical structure to describe the physical relationships in a vessel behavior. This consumption model is integrated into a determinist weather-routing optimization workflow based on a systematic meshing scheme of the sailing area. Pareto-optimization with a Multi-Objective Genetic Algorithm (MOGA) is used to maximize fuel economy in a limited or optimum time. The benefits of the developed decision helping tool in sail-assisted motor vessel routing are highlighted on a westbound north Transatlantic journey
Vu, Thanh Tung. "Modèles spatiaux pour la planification cellulaire." Thesis, Paris, ENST, 2012. http://www.theses.fr/2012ENST0043/document.
Nowadays, cellular technology is almost everywhere. It has had an explosive success over the last two decades and the volume of traffic will still increase in the near future. For this reason, it is also regarded as one cause of worldwide energy consumption, with high impact on carbon dioxide emission. On the other hand, new mathematical tools have enabled theconception of new models for cellular networks: one of these tools is stochastic geometry, or more particularly spatial Poisson point process. In the last decade, researchers have successfully used stochastic geometry to quantify outage probability, throughput or coverage of cellular networks by treating deployment of mobile stations or (and) base stations as Poisson point processes on a plane. These results also take into account to impact of mobility on the performance of such networks. In this thesis, we apply the theory of Poisson point process to solve some problems of cellular networks, in particular we analyze the energy consumption of cellular networks. This thesis has two main parts. The first part deals with some dimensioning and coverage problems in cellular network. We uses stochastic analysis to provide bounds for theoverload probability of OFDMA systems thanks to concentration inequalities and we apply it to solve a dimensioning problem. We also compute the outage probability and handover probability of a typical user. The second part is dedicated to introduce different models for energy consumption of cellular networks. In the first model, the initial location of users form a \PPP\ and each user is associated with an ON-OFF process of activity. In the second model, arrival of users forms a time-space \PPP. We also study the impact of mobility of users by assuming that users randomly move during its sojourn. We focus on the distribution of consumed energy by a base station. This consumed energy is divided into the additive part and the broadcast part. We obtain analytical expressions for the moments of the additive part as well as the mean and variance of the consumed energy. We are able to find an error bound for Gaussian approximation of the additive part. We prove that the mobility of users has a positive impact on the energy consumption. It does not increase or decrease the consumed energy in average but reduces its variance to zero in high mobility regime. We also characterize the convergent rate in function of user's speed
Mandallena, Céline. "Elaboration et application d'une méthode d'évaluation et d'amélioration de la qualité environnementale de bâtiments tertiaires en exploitation." Bordeaux 1, 2006. http://www.theses.fr/2006BOR13207.
Choungmo, Fofack Nicaise Éric. "Sur des modèles pour l’évaluation de performance des caches dans un réseau cœur et de la consommation d’énergie dans un réseau d’accès sans-fil." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4006/document.
Internet is a real ecosystem. It grows, evolves and adapts to the needs of users in terms of communication, connectivity and ubiquity of users. In the last decade, the communication paradigm has shifted from traditional host-to-host interactions to the recent host-to-content model; while various wireless and networking technologies (such as 3/4G smartphones and networks, online media streaming, social networks, clouds, Big-Data, information-centric networks) emerged to enhance content distribution. This development shed light on scalability and energy efficiency issues which can be formulated as follows. How can we design or optimize such large scale distributed systems in order to achieve and maintain high-speed access to contents while (i) reducing congestion and energy consumption in the network and (ii) adapting to the temporal locality of users demand in a continuous connectivity paradigm? In this thesis we focus on two solutions proposed to answer this question: In-network caching and Power save protocols for scalability and energy efficiency issues respectively. Precisely, we propose analytic models for designing core cache networks and modeling energy consumption in wireless access networks. Our studies show that the prediction of the performance of general core cache networks in real application cases can be done with absolute relative errors of order of 1%–5%; meanwhile, dramatic energy save can be achieved by mobile devices and base stations, e.g., as much as 70%–90% of the energy cost in cells with realistic traffic load and the considered parameter settings