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Approche Multi Echelle De Lemballement Des Reactions Exothermiques De Torrefaction De La Biomasse Lignocellulosique
Download Approche Multi Echelle De Lemballement Des Reactions Exothermiques De Torrefaction De La Biomasse Lignocellulosique full books in PDF, epub, and Kindle. Read online Approche Multi Echelle De Lemballement Des Reactions Exothermiques De Torrefaction De La Biomasse Lignocellulosique ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Approche multi échelle de l'emballement des réactions exothermiques de torréfaction de la biomasse lignocellulosique by : Sofien Cavagnol
Download or read book Approche multi échelle de l'emballement des réactions exothermiques de torréfaction de la biomasse lignocellulosique written by Sofien Cavagnol and published by . This book was released on 2013 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: La torréfaction est une étape nécessaire pour la production de gazoles à partir de biomasse lignocellulosique par voie thermochimique (chaîne Biomass To Liquid). Il s'agit d'un traitement thermique dans le domaine de température compris entre 200 et 300°C en milieu non oxydant ; le but de cette étape est de modifier la structure de la biomasse afin d'en faciliter le transport pneumatique après broyage. Cependant, des réactions exothermiques ont été observées et peuvent mener à un mauvais contrôle de la température au sein du réacteur et nuire à la qualité des produits, voire endommager l'installation. L'objectif de cette thèse est de quantifier la chaleur émise par les réactions exothermiques de torréfaction de la biomasse lignocellulosique, et d'en étudier les impactes lors du changement d'échelle, où les phénomènes de transfert de masse et de chaleur ne sont plus négligeables. Durant nos travaux, des mesures de perte de masse et de flux de chaleur ont été réalisées à l'échelle de la poudre (microparticule) sur trois types d'essence de bois (robinier, épicéa et eucalyptus) ainsi que sur les principaux constituants de la matière lignocellulosique (cellulose, xylane, glucomannane et lignine). Un modèle cinétique capable de reproduire la perte de masse ainsi que le flux de chaleur généré par les réactions exothermiques, a été développé. Il utilise le concept de distribution d'énergie d'activation. Tous les paramètres du modèle ont été identifiés par méthode inverse sur un ensemble de tests isothermes d'une durée de 10 heures. Cela permet de proposer des paramètres cinétiques robustes et des valeurs fiables d'énergie d'activation. Par la suite, des mesures de température pendant des essais de torréfaction sur des planches de bois (méso-échelle) et sur un lit fixe de particules (échelle macroscopique) ont permis de mesurer la propagation d'une onde thermique générée par les réactions exothermiques. Une modélisation macroscopique qui intègre le modèle cinétique développé permet de propager l'effet des réactions exothermiques à l'échelle de la macro particule. L'analyse de l'ensemble des résultats permet de mettre en exergue l'importance de l'échelle lit sur l'emballement thermique observé expérimentalement. L'ensemble du travail, mené à différentes échelles spatiales et complété par une analyse permettant de relier ces échelles entre-elles, constitue une avancée significative vers la prédiction de l'exothermicité de la torréfaction afin d'assurer la sécurité et la faisabilité à l'échelle industrielle.
Book Synopsis Analytical Pyrolysis Handbook by : Karen D. Sam
Download or read book Analytical Pyrolysis Handbook written by Karen D. Sam and published by CRC Press. This book was released on 2021-03-22 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical pyrolysis allows scientists to use routine laboratory instrumentation for analyzing complex, opaque, or insoluble samples more effectively than other analytical techniques alone. Analytical Pyrolysis Handbook, Third Edition is a practical guide to the application of pyrolysis techniques to various samples and sample types for a diversity of fields including microbiology, forensic science, industrial research, and environmental analysis. The much-anticipated third edition incorporates recent technological advances that increase the technique’s sensitivity to trace elements, improve its reproducibility, and expand its applicability. The book reviews the types of instrumentation available to perform pyrolysis and offers guidance for interfacing instruments and integrating other analytical techniques, including gas chromatography and mass spectrometry. Fully updated with new sample pyrograms, figures, references, and real-world examples, this edition also highlights new areas of application including cultural materials, forensic analysis, and environmental studies. This book illustrates how the latest advances make pyrolysis a practical, cost-effective, reliable, and flexible alternative for increasingly complex sample analyses. Analytical Pyrolysis Handbook, Third Edition is an essential, one-stop guide for determining if pyrolysis meets application-specific needs as well as performing pyrolysis and handling the data obtained.
Book Synopsis Fundamentals of Fire Phenomena by : James G. Quintiere
Download or read book Fundamentals of Fire Phenomena written by James G. Quintiere and published by John Wiley & Sons. This book was released on 2006-04-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding fire dynamics and combustion is essential in fire safety engineering and in fire science curricula. Engineers and students involved in fire protection, safety and investigation need to know and predict how fire behaves to be able to implement adequate safety measures and hazard analyses. Fire phenomena encompass everything about the scientific principles behind fire behavior. Combining the principles of chemistry, physics, heat and mass transfer, and fluid dynamics necessary to understand the fundamentals of fire phenomena, this book integrates the subject into a clear discipline: Covers thermochemistry including mixtures and chemical reactions; Introduces combustion to the fire protection student; Discusses premixed flames and spontaneous ignition; Presents conservation laws for control volumes, including the effects of fire; Describes the theoretical bases for empirical aspects of the subject of fire; Analyses ignition of liquids and the importance of evaporation including heat and mass transfer; Features the stages of fire in compartments, and the role of scale modeling in fire. Fundamentals of Fire Phenomena is an invaluable reference tool for practising engineers in any aspect of safety or forensic analysis. Fire safety officers, safety practitioners and safety consultants will also find it an excellent resource. In addition, this is a must-have book for senior engineering students and postgraduates studying fire protection and fire aspects of combustion.
Book Synopsis Statistical Mechanics of Phase Transitions by : J. M. Yeomans
Download or read book Statistical Mechanics of Phase Transitions written by J. M. Yeomans and published by Clarendon Press. This book was released on 1992-05-07 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides an introduction to the physics which underlies phase transitions and to the theoretical techniques currently at our disposal for understanding them. It will be useful for advanced undergraduates, for post-graduate students undertaking research in related fields, and for established researchers in experimental physics, chemistry, and metallurgy as an exposition of current theoretical understanding. - ;Recent developments have led to a good understanding of universality; why phase transitions in systems as diverse as magnets, fluids, liquid crystals, and superconductors can be brought under the same theoretical umbrella and well described by simple models. This book describes the physics underlying universality and then lays out the theoretical approaches now available for studying phase transitions. Traditional techniques, mean-field theory, series expansions, and the transfer matrix, are described; the Monte Carlo method is covered, and two chapters are devoted to the renormalization group, which led to a break-through in the field. The book will be useful as a textbook for a course in `Phase Transitions', as an introduction for graduate students undertaking research in related fields, and as an overview for scientists in other disciplines who work with phase transitions but who are not aware of the current tools in the armoury of the theoretical physicist. - ;Introduction; Statistical mechanics and thermodynamics; Models; Mean-field theories; The transfer matrix; Series expansions; Monte Carlo simulations; The renormalization group; Implementations of the renormalization group. -
Book Synopsis An Introduction to Fire Dynamics by : Dougal Drysdale
Download or read book An Introduction to Fire Dynamics written by Dougal Drysdale and published by Wiley. This book was released on 1997-03-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Fire Dynamics Second Edition Dougal Drysdale University of Edinburgh, UK Fire Safety Engineering, identified in the original edition as 'a relatively new discipline', has since grown significantly in stature, as Fire Safety Engineers around the world begin to apply their skills to complex issues that defy solution by the old 'prescriptive' approach to fire safety. This second edition has the same structure as the first highly successful text, but has been updated with the latest research results. Fire processes are discussed and quantified in terms of the mechanisms of heat transfer and fluid flow. Problems addressed include: * The conditions necessary for ignition and steady burning of combustible materials to occur * How large a fire has to become before fire detectors and sprinkler heads will operate * The circumstances that can lead to flashover in a compartment This book is unique in that it identifies fire science and fire dynamics and provides the scientific background necessary for the development of fire safety engineering as a professional discipline. It is essential reading for all those involved in this wide ranging field, from Fire Prevention Officers to Consulting Engineers, whether involved in problems of fire risk assessment, fire safety design, or fire investigation. It will also be of considerable interest and value to research scientists working in building design, fire physics and chemistry.
Book Synopsis Concepts in Thermal Physics by : Stephen Blundell
Download or read book Concepts in Thermal Physics written by Stephen Blundell and published by Oxford University Press. This book was released on 2010 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a modern introduction to the main principles that are foundational to thermal physics, thermodynamics and statistical mechanics. The key concepts are carefully presented in a clear way, and new ideas are illustrated with copious worked examples as well as a description of the historical background to their discovery. Applications are presented to subjects as diverse as stellar astrophysics, information and communication theory, condensed matter physics and climate change. Each chapter concludes with detailed exercises.
Book Synopsis Fundamentals of Food Process Engineering by : Romeo T. Toledo
Download or read book Fundamentals of Food Process Engineering written by Romeo T. Toledo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ten years after the publication of the first edition of Fundamentals of Food Process Engineering, there have been significant changes in both food science education and the food industry itself. Students now in the food science curric ulum are generally better prepared mathematically than their counterparts two decades ago. The food science curriculum in most schools in the United States has split into science and business options, with students in the science option following the Institute of Food Technologists' minimum requirements. The minimum requirements include the food engineering course, thus students en rolled in food engineering are generally better than average, and can be chal lenged with more rigor in the course material. The food industry itself has changed. Traditionally, the food industry has been primarily involved in the canning and freezing of agricultural commodi ties, and a company's operations generally remain within a single commodity. Now, the industry is becoming more diversified, with many companies involved in operations involving more than one type of commodity. A number of for mulated food products are now made where the commodity connection becomes obscure. The ability to solve problems is a valued asset in a technologist, and often, solving problems involves nothing more than applying principles learned in other areas to the problem at hand. A principle that may have been commonly used with one commodity may also be applied to another commodity to produce unique products.
Book Synopsis Fire in California's Ecosystems by : Jan W. van Wagtendonk
Download or read book Fire in California's Ecosystems written by Jan W. van Wagtendonk and published by Univ of California Press. This book was released on 2018-06-08 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire in California’s Ecosystems describes fire in detail—both as an integral natural process in the California landscape and as a growing threat to urban and suburban developments in the state. Written by many of the foremost authorities on the subject, this comprehensive volume is an ideal authoritative reference tool and the foremost synthesis of knowledge on the science, ecology, and management of fire in California. Part One introduces the basics of fire ecology, including overviews of historical fires, vegetation, climate, weather, fire as a physical and ecological process, and fire regimes, and reviews the interactions between fire and the physical, plant, and animal components of the environment. Part Two explores the history and ecology of fire in each of California's nine bioregions. Part Three examines fire management in California during Native American and post-Euro-American settlement and also current issues related to fire policy such as fuel management, watershed management, air quality, invasive plant species, at-risk species, climate change, social dynamics, and the future of fire management. This edition includes critical scientific and management updates and four new chapters on fire weather, fire regimes, climate change, and social dynamics.
Book Synopsis Consequences of Microbial Interactions with Hydrocarbons, Oils, and Lipids: Production of Fuels and Chemicals by : Sang Yup Lee
Download or read book Consequences of Microbial Interactions with Hydrocarbons, Oils, and Lipids: Production of Fuels and Chemicals written by Sang Yup Lee and published by Springer. This book was released on 2018-04-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the current states of microbial and related technologies that have been developed for the efficient production of chemicals, fuels and materials by integrating strain and enzyme development, fermentation processes, and downstream processes. The book also covers how microbes and microbial products can be employed to facilitate petroleum recovery. Global consequences of bio-based production of chemicals, fuels and materials are also discussed with insights.
