Optimisation des alimentations électriques des Data Centers

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)

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Book Synopsis Optimisation des alimentations électriques des Data Centers by : Nouhaila Lazaar

Download or read book Optimisation des alimentations électriques des Data Centers written by Nouhaila Lazaar and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les data centers, des usines abritant des milliers de serveurs informatiques, fonctionnent en permanence pour échanger, stocker, traiter des données et les rendre accessibles via l'internet. Avec le développement du secteur numérique, leur consommation énergétique, en grande partie d'origine fossile, n'a cessé de croitre au cours de la dernière décennie, représentant une réelle menace pour l'environnement. Le recours aux énergies renouvelables constitue un levier prometteur pour limiter l'empreinte écologique des data centers. Néanmoins, le caractère intermittent de ces sources freine leur intégration dans un système nécessitant un degré de fiabilité élevée. L'hybridation de plusieurs technologies pour la production d'électricité verte, couplée à des dispositifs de stockage est actuellement une solution efficace pour pallier ce problème. De ce fait, ce travail de recherche étudie un système multi-sources, intégrant des hydroliennes, des panneaux photovoltaïques, des batteries et un système de stockage d'hydrogène pour alimenter un data center à l'échelle du MW. L'objectif principal de cette thèse est l'optimisation de l'alimentation électrique d'un data center, aussi bien pour des sites isolés que des installations raccordées au réseau. Le premier axe de ce travail est la modélisation des différents composants du système à l'aide de la représentation énergétique macroscopique (REM). Une gestion d'énergie reposant sur le principe de séparation fréquentielle est adoptée dans un premier temps pour répartir l'énergie entre des organes de stockage présentant des caractéristiques dynamiques différentes. Le deuxième axe concerne le dimensionnement optimal du système proposé afin de trouver la meilleure configuration qui satisfasse les contraintes techniques imposées à un coût minimum, en utilisant l'optimisation par essaims particulaires (PSO) et l'algorithme génétique (AG). Ici, une technique de gestion d'énergie basée sur des règles simples est utilisée pour des raisons de simplicité et de réduction de temps de calcul. Le dernier axe se focalise sur l'optimisation de la gestion d'énergie via l'AG, en tenant compte des problèmes de dégradation des systèmes de stockage en vue de réduire leur coût d'exploitation et de prolonger leur durée de vie. Il est bien entendu que chaque axe précédemment abordé a fait l'objet d'une analyse de sensibilité spécifique, afin d'évaluer les performances du système hybride dans différentes conditions de fonctionnement.

Government Reports Annual Index

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ISBN 13 :
Total Pages : 890 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1986 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Contested Energy Spaces

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Publisher : Springer
ISBN 13 : 3030023966
Total Pages : 128 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Contested Energy Spaces by : Tarje I. Wanvik

Download or read book Contested Energy Spaces written by Tarje I. Wanvik and published by Springer. This book was released on 2018-10-30 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authored brief discusses how to conceptualize the socio-material complexity of contested energy spaces in the Canadian North, specifically in the context of indigenous communities that have allowed industrial developments to occur on their lands despite the environmental and lifestyle consequences. By applying assemblage theory, the author identifies contested energy spaces as complex places or situations that need to be understood through geographical concepts of place, scale, and power. In 6 chapters, the book challenges preconceptions of indigenous peoples as victims by examining communities that favor industrial developments, and identifies instabilities in the Canadian North to analyze the power relations between industry, state and indigenous communities. The book will be of interest to undergraduate and graduate students, teachers and lecturers, and geography scholars. Chapter 1 introduces the concept of energy spaces, and addresses the main research question posed in the text; why do some indigenous communities support extractive industry developments on their traditional territories, despite substantial destruction of the local environment and traditional indigenous land use practices? Chapter 2 further elaborates on the conceptualization of contested energy spaces, and chapter 3 applies this to the study area in Alberta, Canada. Chapter 4 discusses the methodology of the research process, and chapter 5 presents empirical cases in Alberta, from the changing governance structures of energy spaces to the networking of local indigenous communities. Chapter 6 concludes the brief by summarizing he findings, and by offering advice to all stakeholders regarding the dangers of leaving government processes to market forces alone.

Water for Peace: Organizing for water programs

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Publisher :
ISBN 13 :
Total Pages : 1084 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Water for Peace: Organizing for water programs by :

Download or read book Water for Peace: Organizing for water programs written by and published by . This book was released on 1968 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy: a Continuing Bibliography with Indexes

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Publisher :
ISBN 13 :
Total Pages : 454 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Energy: a Continuing Bibliography with Indexes by :

Download or read book Energy: a Continuing Bibliography with Indexes written by and published by . This book was released on 1977 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Electrochemical Components

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Publisher : John Wiley & Sons
ISBN 13 : 9781848214019
Total Pages : 0 pages
Book Rating : 4.2/5 (14 download)

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Book Synopsis Electrochemical Components by : Marie-Cécile Pera

Download or read book Electrochemical Components written by Marie-Cécile Pera and published by John Wiley & Sons. This book was released on 2013-07-22 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the methods of storage commonly used in hybrid systems. After an introductory chapter reviewing the basics of electrochemistry, Chapter 2 is given over to the storage of electricity in the form of hydrogen. Once hydrogen has been made, we have to be able to convert it back into electricity on demand. This can be done with another energy converter: a fuel cell, the subject of Chapter 3. Such a system is unable to deliver significant dynamics in terms of storage and release of electricity and needs to be supplemented with another solution: a detailed study of supercapacitors is provided in Chapter 4.While the storage systems touched upon in the previous three chapters (hydrogen batteries and supercapacitors) both exhibit advantageous characteristics, at present they are still relatively costly. Thus, the days of the electrochemical accumulator by no means appear to be numbered just yet. This will therefore be the topic of Chapter 5. Finally, on the basis of the elements laid down in the previous chapters, Chapter 6 will focus on electrical hybridization of these storage systems, with a view to enhancing the performance (in terms of energy, lifetime, cost, etc.) of the newly formed system. Aimed at an audience of researchers, industrialists, academics, teachers and students, many exercises, along with corrected solutions, are provided throughout the book. Contents 1. Basic Concepts of Electrochemistry used in Electrical Engineering. 2. Water Electrolyzers. 3. Fuel Cells. 4. Electrical Energy Storage by Supercapacitors. 5. Electrochemical Accumulators. 6. Hybrid Electrical System. About the Authors Marie-Cécile Péra is a Full Professor at the University of Franche-Comte in France and Deputy Director of the FEMTO-ST Institute (CNRS). Her research activities include modeling, control and diagnosis of electric power generation systems (fuel cells – PEMFC and SOFC, supercapacities, batteries) for transportation and stationary applications. She has contributed to more than 180 articles in international journals and conferences. Daniel Hissel is Full Professor at the University of Franche-Comte in France and Director of the Fuel Cell Lab Research Federation (CNRS). He also leads a research team devoted to hybrid electrical systems in the FEMTO-ST Institute (CNRS). He has published more than 250 research papers on modeling, control, diagnostics and prognostics of hybrid electrical systems. Hamid Gualous is Full Professor at the University of Caen Lower Normandy in France and director of the LUSAC laboratory. His current research interests include power electronics, electric energy storage, power and energy systems and energy management. Christophe Turpin is Full Researcher at the CNRS (French National Center for Scientific Research). He is responsible for hydrogen activities within the Laboratory LAPLACE, Toulouse, France. His research activities include the characterization and modeling of fuel cells and electrolyzers, the state of health of these components, and their hybridization with other electrochemical components (ultracapacitors, batteries) within optimized energy systems for stationary and aeronautical applications.

Agrindex

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Publisher :
ISBN 13 :
Total Pages : 1064 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Agrindex by :

Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy

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Publisher :
ISBN 13 :
Total Pages : 412 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Energy by :

Download or read book Energy written by and published by . This book was released on 1977 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Projets Architecturaux Économisant L'énergie

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Publisher : Public Works Canada = Travaux publics Canada
ISBN 13 :
Total Pages : 668 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Projets Architecturaux Économisant L'énergie by : Canada. Department of Public Works

Download or read book Projets Architecturaux Économisant L'énergie written by Canada. Department of Public Works and published by Public Works Canada = Travaux publics Canada. This book was released on 1980 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bulletin de l'Institut international du froid

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Publisher :
ISBN 13 :
Total Pages : 850 pages
Book Rating : 4.:/5 (327 download)

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Book Synopsis Bulletin de l'Institut international du froid by : International Institute of Refrigeration

Download or read book Bulletin de l'Institut international du froid written by International Institute of Refrigeration and published by . This book was released on 1999 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

INIS Atomindex

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Publisher :
ISBN 13 :
Total Pages : 1634 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis INIS Atomindex by :

Download or read book INIS Atomindex written by and published by . This book was released on 1986 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

International Aerospace Abstracts

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ISBN 13 :
Total Pages : 1240 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis International Aerospace Abstracts by :

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1977 with total page 1240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Smart Grid

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Publisher : John Wiley & Sons
ISBN 13 : 1118156102
Total Pages : 234 pages
Book Rating : 4.1/5 (181 download)

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Book Synopsis Smart Grid by : James A. Momoh

Download or read book Smart Grid written by James A. Momoh and published by John Wiley & Sons. This book was released on 2012-03-07 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is written as primer hand book for addressing the fundamentals of smart grid. It provides the working definition the functions, the design criteria and the tools and techniques and technology needed for building smart grid. The book is needed to provide a working guideline in the design, analysis and development of Smart Grid. It incorporates all the essential factors of Smart Grid appropriate for enabling the performance and capability of the power system. There are no comparable books which provide information on the “how to” of the design and analysis. The book provides a fundamental discussion on the motivation for the smart grid development, the working definition and the tools for analysis and development of the Smart Grid. Standards and requirements needed for designing new devices, systems and products are discussed; the automation and computational techniques need to ensure that the Smart Grid guarantees adaptability, foresight alongside capability of handling new systems and components are discussed. The interoperability of different renewable energy sources are included to ensure that there will be minimum changes in the existing legacy system. Overall the book evaluates different options of computational intelligence, communication technology and decision support system to design various aspects of Smart Grid. Strategies for demonstration of Smart Grid schemes on selected problems are presented.

Neural Networks

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Publisher : Springer Science & Business Media
ISBN 13 : 3540288473
Total Pages : 509 pages
Book Rating : 4.5/5 (42 download)

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Book Synopsis Neural Networks by : Gérard Dreyfus

Download or read book Neural Networks written by Gérard Dreyfus and published by Springer Science & Business Media. This book was released on 2005-11-25 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural networks represent a powerful data processing technique that has reached maturity and broad application. When clearly understood and appropriately used, they are a mandatory component in the toolbox of any engineer who wants make the best use of the available data, in order to build models, make predictions, mine data, recognize shapes or signals, etc. Ranging from theoretical foundations to real-life applications, this book is intended to provide engineers and researchers with clear methodologies for taking advantage of neural networks in industrial, financial or banking applications, many instances of which are presented in the book. For the benefit of readers wishing to gain deeper knowledge of the topics, the book features appendices that provide theoretical details for greater insight, and algorithmic details for efficient programming and implementation. The chapters have been written by experts and edited to present a coherent and comprehensive, yet not redundant, practically oriented introduction.

Frozen Food Science and Technology

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Publisher : John Wiley & Sons
ISBN 13 : 1444302337
Total Pages : 368 pages
Book Rating : 4.4/5 (443 download)

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Book Synopsis Frozen Food Science and Technology by : Judith A. Evans

Download or read book Frozen Food Science and Technology written by Judith A. Evans and published by John Wiley & Sons. This book was released on 2009-01-21 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive source of information on freezing and frozen storage of food. Initial chapters describe the freezing process and provide a fundamental understanding of the thermal and physical processes that occur during freezing. Experts in each stage of the frozen cold chain provide, within dedicated chapters, guidelines and advice on how to freeze food and maintain its quality during storage, transport, retail display and in the home. Individual chapters deal with specific aspects of freezing relevant to the main food commodities: meat, fish, fruit and vegetables. Legislation and new freezing processes are also covered. Frozen Food Science and Technology offers in-depth knowledge of current and emerging refrigeration technologies along the entire frozen food chain, enabling readers to optimise the quality of frozen food products. It is aimed at food scientists, technologists and engineers within the frozen food industry; frozen food retailers; and researchers and students of food science and technology.

Electrical Installation Guide

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Publisher : Schneider Electric
ISBN 13 : 2953164308
Total Pages : 455 pages
Book Rating : 4.9/5 (531 download)

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Book Synopsis Electrical Installation Guide by : Commission électrotechnique internationale

Download or read book Electrical Installation Guide written by Commission électrotechnique internationale and published by Schneider Electric. This book was released on 2008 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bibliographie Relative Aux Irrigations, Au Drainage, À la Régularisation Des Cours D'eau Et À la Maîtrise Des Crues

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Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Bibliographie Relative Aux Irrigations, Au Drainage, À la Régularisation Des Cours D'eau Et À la Maîtrise Des Crues by : International Commission on Irrigation and Drainage

Download or read book Bibliographie Relative Aux Irrigations, Au Drainage, À la Régularisation Des Cours D'eau Et À la Maîtrise Des Crues written by International Commission on Irrigation and Drainage and published by . This book was released on 1983 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: