- Table View
- List View
Thermal Spreading and Contact Resistance: Fundamentals and Applications (Wiley-ASME Press Series)
by Yuri S. Muzychka M. Michael YovanovichThermal Spreading and Contact Resistance: Fundamentals and Applications Single source reference on how applying thermal spreading and contact resistance can solve problems across a variety of engineering fields Thermal Spreading and Contact Resistance: Fundamentals and Applications offers comprehensive coverage of the key information that engineers need to know to understand thermal spreading and contact resistance, including numerous predictive models for determining thermal spreading resistance and contact conductance of mechanical joints and interfaces, plus detailed examples throughout the book. Written by two of the leading experts in the field, Thermal Spreading and Contact Resistance: Fundamentals and Applications includes information on: Contact conductance, mass transfer, transport from super-hydrophobic surfaces, droplet/surface phase change problems, and tribology applications such as sliding surfaces and roller bearings Heat transfer in micro-devices and thermal spreaders, orthotropic systems, and multi-source applications for electronics thermal management applications Fundamental principles, thermal spreading in isotropic half-space regions, circular flux tubes and disc spreaders, and rectangular flux channels and compound spreaders Systems with non-uniform sink plane conductance, transient spreading resistance, and contact resistance between both non-conforming and conforming rough surfaces Providing comprehensive coverage of the subject, Thermal Spreading and Contact Resistance: Fundamentals and Applications is an essential resource for mechanical, aerospace, and chemical engineers working on research in the fields of heat transfer, thermal management of electronics, and tribology, as well as thermal engineers and researchers in the field of thermal physics.
Thermal Springs and Geothermal Energy in the Qinghai-Tibetan Plateau and the Surroundings
by Zhijie LiaoThis book introduces readers to the rich and varied thermal springs of the Tibetan Plateau, which is steadily rising due to the collision of two continental plates. Readers will discover a wealth of information on boiling springs and hot springs, including their location and elevation, temperature, geological characteristics, and water chemical data, as well as tables on warm and tepid springs. Shedding new light on this vital supplement to hydroelectric resources in remote southwest China, the book will appeal to a broad relationship, from experts researching the Tibetan Plateau to companies specializing in geothermal exploration.
Thermal Stability of Engineering Heterochain Thermoresistant Polymers
by Kalugina Gumargalieva Gennady ZaikovThis book presents investigation results of thermal transformations in thermoresistant polymers: polysulfones, polyester-imides, aliphatic-aromatic polyimides and polyamides, liquid-crystal aromatic co-polyesters, polyphenylquinoxalines at temperatures of materials and articles processing and operation.An important result of investigations is the d
Thermal Stability of Metastable Magnetic Skyrmions (Springer Theses)
by Louise DesplatThe energy cost associated with modern information technologies has been increasing exponentially over time, stimulating the search for alternative information storage and processing devices. Magnetic skyrmions are solitonic nanometer-scale quasiparticles whose unique topological properties can be thought of as that of a Mobius strip. Skyrmions are envisioned as information carriers in novel information processing and storage devices with low power consumption and high information density. As such, they could contribute to solving the energy challenge.In order to be used in applications, isolated skyrmions must be thermally stable at the scale of years. In this work, their stability is studied through two main approaches: the Kramers' method in the form of Langer's theory, and the forward flux sampling method. Good agreement is found between the two methods. We find that small skyrmions possess low internal energy barriers, but are stabilized by a large activation entropy. This is a direct consequence of the existence of stable modes of deformation of the skyrmion. Additionally, frustrated exchange that arises at some transition metal interfaces leads to new collapse paths in the form of the partial nucleation of the corresponding antiparticle, as merons and antimerons.
Thermal Stresses: Advanced Theory And Applications (Solid Mechanics And Its Applications Ser. #158)
by Naotake NodaThermal Stresses, 2nd Edition is the first book comprehensive volume on thermal stresses. It provides a sound grounding in the fundamental theory of thermal stresses as well as includes a multitude of applications. Many solved examples are included in the text, with numerous problems at the end of each chapter.The book starts with an introduction to the elementary theory, at the undergraduate level, and then progresses with the exposition of more advanced methods. The authors introduce the topics in a clear fashion, easy to grasp by students, engineers and scientists.
Thermal System Optimization: A Population-Based Metaheuristic Approach
by Vivek K. Patel Vimal J. Savsani Mohamed A. TawhidThis book presents a wide-ranging review of the latest research and development directions in thermal systems optimization using population-based metaheuristic methods. It helps readers to identify the best methods for their own systems, providing details of mathematical models and algorithms suitable for implementation. To reduce mathematical complexity, the authors focus on optimization of individual components rather than taking on systems as a whole. They employ numerous case studies: heat exchangers; cooling towers; power generators; refrigeration systems; and others. The importance of these subsystems to real-world situations from internal combustion to air-conditioning is made clear. The thermal systems under discussion are analysed using various metaheuristic techniques, with comparative results for different systems. The inclusion of detailed MATLAB® codes in the text will assist readers—researchers, practitioners or students—to assess these techniques for different real-world systems. Thermal System Optimization is a useful tool for thermal design researchers and engineers in academia and industry, wishing to perform thermal system identification with properly optimized parameters. It will be of interest for researchers, practitioners and graduate students with backgrounds in mechanical, chemical and power engineering.
Thermal Systems Design: Fundamentals and Projects
by Richard J. MartinThermal Systems Design Discover a project-based approach to thermal systems design In the newly revised Second Edition of Thermal Systems Design: Fundamentals and Projects, accomplished engineer and educator Dr. Richard J. Martin offers senior undergraduate and graduate students an insightful exposure to real-world design projects. The author delivers a brief review of the laws of thermodynamics, fluid mechanics, heat transfer, and combustion before moving on to a more expansive discussion of how to apply these fundamentals to design common thermal systems like boilers, combustion turbines, heat pumps, and refrigeration systems. The book includes design prompts for 14 real-world projects, teaching students and readers how to approach tasks like preparing Process Flow Diagrams and computing the thermodynamic details necessary to describe the states designated therein. Readers will learn to size pipes, ducts, and major equipment and to prepare Piping and Instrumentation Diagrams that contain the instruments, valves, and control loops needed for automatic functioning of the system. The Second Edition offers an updated look at the pedagogy of conservation equations, new examples of fuel-rich combustion, and a new summary of techniques to mitigate against thermal expansion and shock. Readers will also enjoy: Thorough introductions to thermodynamics, fluid mechanics, and heat transfer, including topics like the thermodynamics of state, flow in porous media, and radiant exchange A broad exploration of combustion fundamentals, including pollutant formation and control, combustion safety, and simple tools for computing thermochemical equilibrium when product gases contain carbon monoxide and hydrogen Practical discussions of process flow diagrams, including intelligent CAD, equipment, process lines, valves and instruments, and non-engineering items In-depth examinations of advanced thermodynamics, including customized functions to compute thermodynamic properties of air, combustion products, water/steam, and ammonia right in the user’s Excel workbook Perfect for students and instructors in capstone design courses, Thermal Systems Design: Fundamentals and Projects is also a must-read resource for mechanical and chemical engineering practitioners who are seeking to extend their engineering know-how to a wide range of unfamiliar thermal systems.
Thermal Transport in Semiconductors: First Principles and Phonon Hydrodynamics (Springer Theses)
by Pol Torres AlvarezStarting from a broad overview of heat transport based on the Boltzmann Transport Equation, this book presents a comprehensive analysis of heat transport in bulk and nanomaterials based on a kinetic-collective model (KCM). This has become key to understanding the field of thermal transport in semiconductors, and represents an important stride. The book describes how heat transport becomes hydrodynamic at the nanoscale, propagating very much like a viscous fluid and manifesting vorticity and friction-like behavior. It introduces a generalization of Fourier’s law including a hydrodynamic term based on collective behavior in the phonon ensemble. This approach makes it possible to describe in a unifying way recent experiments that had to resort to unphysical assumptions in order to uphold the validity of Fourier’s law, demonstrating that hydrodynamic heat transport is a pervasive type of behavior in semiconductors at reduced scales.
Thermal Use of Shallow Groundwater
by Fritz Stauffer Peter Bayer Philipp Blum Nelson Molina Giraldo Wolfgang KinzelbachThe thermal use of the shallow subsurface is increasingly being promoted and implemented as one of many promising measures for saving energy. A series of questions arises concerning the design and management of underground and groundwater heat extraction systems, such as the sharing of the thermal resource and the assessment of its long-term potent
Thermally Stable and Flame Retardant Polymer Nanocomposites
by Vikas MittalPolymer nanocomposites have revolutionised material performance, most notably in the plastics, automotive and aerospace industries. However, in order to be commercially viable, many of these materials must withstand high temperatures. In this book, leaders in the field outline the mechanisms behind the generation of suitable polymer systems, pulling together recent research to provide a unified and up-to-date assessment of recent technological advancements. The text is divided into two clear sections, introducing the reader to the two most important requirements for this material type: thermal stability and flame retardancy. Special attention is paid to practical examples, walking the reader through the numerous commercial applications of thermally stable and flame retardant nanocomposites. With a strong focus on placing theory within commercial context, this unique volume will appeal to practitioners as well as researchers.
Thermionics Quo Vadis?: An Assessment of the DTRA's Advanced Thermionics Research and Development Program
by Committee on Thermionic Research TechnologyThis report evaluates the Defense Threat Reduction Agency prior and present sponsored efforts; assess the present state of the art in thermionic energy conversion systems; assess the technical challenges to the development of viable thermionic energy conversion systems for both space and terrestrial applications; and recommend a prioritized set of objectives for a future research and development program for advanced thermionic systems for space and terrestrial applications.
Thermische Energiespeicher in der Gebäudetechnik: Sensible Speicher, Latente Speicher, Systemintegration
by Johannes GoekeDie Speicherung von thermischer Energie in Form von Wärme und Kälte steht im Mittelpunkt dieses Buches. Inhalt sind die Themenbereiche wassergefüllte Speicher mit sensibler Wärme, latente Wärme-/Kältespeicher mit Phasenwechsel-Materialien sowie das Gebäude als thermischer Speicher. Dazu kommen Anwendungen im Bereich der Gebäude und Quartiere. Dabei liegt der Focus immer wieder auf der Belade- und Entladedynamik der unterschiedlichen Speichertypen.
Thermische Energiesysteme: Berechnung klassischer und regenerativer Komponenten und Anlagen
by Matthias Stripf Peter Von BöckhDas Buch behandelt alle wesentlichen Aspekte zur grundlegenden Berechnung thermischer Energiesysteme. Es versetzt Studierende und Ingenieure in die Lage, reale Komponenten und Systeme tats#65533;chlich zu berechnen und zu konstruieren und ist damit eine ideale Fortsetzung der grundlagenorientierten B#65533;cher zur Thermodynamik, Fluidmechanik und W#65533;rme#65533;bertragung. Neben den klassischen Komponenten und Anlagen zur Energieversorgung werden auch die an Bedeutung gewinnenden Technologien, wie Windkraftanlagen und W#65533;rmepumpen im Detail behandelt. Alle Beispiele sind als Mathcad-Programme im Internet herunterladbar, ebenso wichtige Diagramme und Programme zur Berechnung der Stoffwerte. Die Zielgruppen - Studierende des Maschinenbaus und der Verfahrenstechnik - Planer und Entwickler im Bereich Thermische Energiesysteme
Thermische Solarenergie
by Robert Stieglitz Volker HeinzelVon der physikalischen Basis bis zu Umsetzungen im häuslichen und kraftwerkstechnischen Bereich reichen die Aspekte der Solarthermie. Dieses Buch bietet eine fundierte Analyse der Thematik von Grundlagen der solaren Einstrahlung bis zu neuen Anwendungen. Diskutiert werden passive Aspekte, Energie- und Impulstransport in Systemen, aktive Nutzung von Niedertemperatursystemen sowie kraftwerkstechnische Umsetzungen. Bisher genutzte Konzepte, Spezifika und die Ankopplung an Kraftwerkszyklen werden ebenso beschrieben wie potenzielle Speicherverfahren.
Thermische Turbomaschinen
by Walter TraupelDas Werk gibt eine umfassende Darstellung der theoretischen Grundlagen zur Berechnung und Auslegung von Dampfturbinen, Gasturbinen und Turbokompressoren. Der erste Band behandelt die thermodynamische Prozeßführung von Dampf- und Gasturbinenanlagen und die thermodynamisch-strömungstechnische Berechnung der Turbomaschinen selbst. Um zu einem vertieften Verständnis zu führen, wird die Theorie stets aus den Grundwissenschaften heraus entwickelt, weshalb auch ein kurzer Abriß der thermodynamischen und strömungstechnischen Grundlagen an den Anfang gestellt ist.
Thermische Turbomaschinen: Geänderte Betriebsbedingungen, Regelung, Mechanische Probleme, Temperaturprobleme
by Walter TraupelDas Buch behandelt ausführlich das Verhalten der thermischen Turbomaschinen unter geänderten Betriebsbedingungen und darauf aufbauend ihre Regelungseigenschaften. Weiter werden die spezifischen Festigkeitsprobleme der Turbomaschinen dargestellt. Diesen Kapiteln ist ein allgemeines Kapitel über die Grundlagen der Festigkeitsrechnungen vorausgeschickt, das zwar diejenigen Aspekte besonders hervorhebt, die im Turbomaschinenbau vor allem wichtig sind, aber auch für verwandte Gebiete bedeutsam ist, da eine geraffte Darstellung dieser Art bis heute fehlt. Der Bestimmung der Temperaturverteilung in den maßgebenden Konstruktionsteilen (insbes. in der gekühlten Gasturbine) ist ein weiteres Kapitel gewidmet. Den Abschluß bilden die Ausführungen über die Schaufelschwingungen und die lauftechnischen Probleme der Rotoren.
Thermisches Management elektrischer Maschinen
by Mihály Németh-CsókaDas Buch fasst den aktuellen Stand der wichtigsten thermischen Aspekte einer umrichtergespeisten elektrischen Maschine zusammen. Neben den typischen Themen wie Modellierung, Wirkungsgradoptimierung oder Widerstandadaption werden auch Bestimmung von Zeitkonstanten, Temperaturmessung, kT-Adaption, Entmagnetisierung und Alterung der Isolation beschrieben.Schwerpunkte sind praktische Anwendungsmöglichkeiten in Echtzeitsystemen bei der Modellierung und bei der Wirkungsgradoptimierung. Das Buch eignet sich besonders für den Ingenieur mit industrieller Praxis oder als Lehrbuch für Studenten, die sich vertiefend mit elektrischen Antrieben beschäftigen.
Thermitic Thermodynamics: A Computational Survey and Comprehensive Interpretation of Over 800 Combinations of Metals, Metalloids, and Oxides
by Anthony Peter ShawThermites, which are generally considered to be reactive mixtures of powdered metals and metal oxides, are an important subset of energetic materials. The underlying thermodynamic properties of a given mixture dictate whether it may undergo a self-sustaining reaction, liberating heat in the process. Thermodynamic information in the existing scientific literature regarding thermitic combinations is scattered and incomplete. Currently, a comprehensive overview of this nature would be of great use to those working in the areas of pyrotechnics, pyrometallurgy, high-temperature chemistry, and materials science. Thermitic Thermodynamics solves this problem by describing the results of calculations on over 800 combinations of metal, metalloid, and metal oxide reactants.Other features include: A first-of-its-kind adiabatic survey of binary thermitic reactions Provides an overview of key trends in exothermic metal-metal oxide reactivity Describes the role of non-oxide product formation in thermitic systems Explains how to interpret the results of thermochemical calculations effectively An invaluable resource, this book provides an accessible introduction for students and is also an enduring guide for professionals.
Thermo-Acoustics of Nanofluids and Transfer Processes (Emerging Materials and Technologies)
by Shriram S. Sonawane Manjakuppam MalikaThis book explains the physical principles and theoretical basis of acoustics of nanofluids with mathematical rigor, focusing on concepts and points of view that have proven effective in applications such as heat transfer, petroleum science and technology, wastewater treatment, food processing, and hydrogen production. It provides a rigorous framework to aid readers in building innovative nanofluid-based devices, covering essential topics such as the study and measurement of thermophysical characteristics, convection, and heat transfer equipment performance.Features: Focuses on the basics of nanofluids, shedding light on the thermo-acoustic behavior Discusses the specific needs of a nanofluid for a process in terms of both heat and mass transfer Discusses the process transfer of nanofluids with reference to thermo-acoustics Discusses the numerical and experimental investigations of nanofluids used in various fields of industrial applications Reviews fundamentals and applied aspects of acoustic cavitation This book is aimed at graduate students and researchers in fluid dynamics, nanotechnology, and chemical and mechanical engineering.
Thermo-energetische Gestaltung von Werkzeugmaschinen: Praxishandbuch
by Christian BrecherThermo-energetische Gestaltung von Werkzeugmaschinen Dieses Buch beschreibt Maßnahmen zur Sicherstellung der Bearbeitungsgenauigkeit unter thermisch instationären Bedingungen bei gesteigerter Produktivität, ohne zusätzliche Energie für die Temperierung aufzuwenden. Es werden Forschungsergebnisse zu thermischen Einflüssen sowie deren Beeinflussung und Beherrschung vorgestellt. Die dargestellten Entwicklungsarbeiten wurden im Rahmen des Sonderforschungsbereich/Transregio 96 (SFB/TR 96) von der DFG gefördert und umfassen die Weiterentwicklung von Modellgrundlagen, Kompensationsmaßnahmen und steuerungsintegrierte Korrekturverfahren. Im Bereich der Modellgrundlagen werden die Modellierung von Baugruppen und Gesamtmaschinen, die Verhaltensanalyse, die Parametrierung und effizienzsteigernde Berechnungsmethoden behandelt. Die Kompensationsmaßnahmen umfassen Fluidkreisläufe und die aktive Steuerung von Wärmeflüssen. Die steuerungsintegrierten Korrekturverfahren beinhalten sowohl modellbasierte als auch messtechnisch basierte Ansätze. Zusätzlich werden die entwickelten Lösungsverfahren und Ergebnisse aus der praktischen Erprobung an Baugruppen und Gesamtmaschinen bewertet. Das Open-Access-Buch richtet sich an Praktiker aus dem Bereich des Werkzeugmaschinenbaus.
Thermo-Gas Dynamics of Hydrogen Combustion and Explosion
by Boris E. Gelfand Mikhail V. Silnikov Sergey P. Medvedev Sergey V. KhomikThe potential of hydrogen as an important future energy source has generated fresh interest in the study of hydrogenous gas mixtures. Indeed, both its high caloricity and reactivity are unique properties, the latter underscoring safety considerations when handling such mixtures. The present monograph is devoted to the various aspects of hydrogen combustion and explosion processes. In addition to theoretical and phenomenological considerations, this work also collates the results of many experiments from less well known sources. The text reviews the literature in this respect, thereby providing valuable information about the thermo-gas-dynamical parameters of combustion processes for selected experimental settings in a range of scientific and industrial applications.
Thermo-Gas Dynamics of Hydrogen Combustion and Explosion (Shock Wave and High Pressure Phenomena)
by Boris E. Gelfand Mikhail V. Silnikov Sergey P. Medvedev Sergey V. KhomikThe potential of hydrogen as an important future energy source has generated fresh interest in the study of hydrogenous gas mixtures. Indeed, both its high caloricity and reactivity are unique properties, the latter underscoring safety considerations when handling such mixtures. The present monograph is devoted to the various aspects of hydrogen combustion and explosion processes. In addition to theoretical and phenomenological considerations, this work also collates the results of many experiments from less well known sources. The text reviews the literature in this respect, thereby providing valuable information about the thermo-gas-dynamical parameters of combustion processes for selected experimental settings in a range of scientific and industrial applications.
Thermo-Hydraulics of Nuclear Reactors
by Christopher Earls BrennenThis book provides a concise and up-to-date summary of the essential thermo-hydraulic analyses and design principles of nuclear reactors for electricity generation. Beginning with the basic nuclear physics, it leads through technical and quantitative analyses to descriptions of both the normal operation of the various modern nuclear reactor designs and the analyses of the possible departures from normal operation. It then describes both the postulated accident scenarios and summaries of the causes for the three major nuclear power generation accidents, Three Mile Island, Chernobyl and Fukushima as well as the major improvements to reactor safety that grew out of those analyses and accidents.
Thermo-Hydro-Mechanical-Chemical Processes in Fractured Porous Media: Modelling and Benchmarking
by Olaf Kolditz Uwe-Jens Görke Hua Shao Wenqing Wang Sebastian BauerThis book presents a new suite of benchmarks for and examples of porous media mechanics collected over the last two years. It continues the assembly of benchmarks and examples for porous media mechanics published in 2014. The book covers various applications in the geosciences, geotechnics, geothermal energy, and geological waste deposition. The analysis of thermo-hydro-mechanical-chemical (THMC) processes is essential to many applications in environmental engineering, such as geological waste deposition, geothermal energy utilisation, carbon capture and storage, water resources management, hydrology, and even climate change. In order to assess the feasibility and safety of geotechnical applications, process-based modelling is the only tool that can effectively quantify future scenarios, a fact which also creates a huge burden of responsibility concerning the reliability of computational tools. The book shows that benchmarking offers a suitable methodology for verifying the quality of modelling tools based on best practices, and together with code comparison fosters community efforts. It also provides a brief introduction to the DECOVALEX, SeSBench and MOMAS initiatives. This benchmark book is part of the OpenGeoSys initiative - an open source project designed to share knowledge and experience in environmental analysis and scientific computation.
Thermo-Hydro-Mechanical-Chemical (Terrestrial Environmental Sciences)
by Thomas Nagel Olaf Kolditz Hua Shao Haibing Shao Ju Wang Thorsten Schäfer Chun-Liang Zhang Horst Geckeis Uwe DüsterlohThis book is open access book. The collaborative Pilot Project, titled “Comparison of Thermo-Hydro-Mechanical-Chemical (THMC) Processes in Bentonite Barrier Systems”, aims to investigate the fundamentals, conduct laboratory and field experiments, and develop numerical models for barrier systems that ensure the safe isolation of radioactive waste in deep geological repositories. This book compares methodologies and technologies used in experimental laboratory and field research, as well as systems analysis, in a collaborative work of German and Chinese scientists. Both parties have access to exceptional experimental and modelling research capabilities. The Beishan underground research laboratory (URL) is currently under construction in Gansu, China. It will serve as an international collaboration platform for URL research in the future. International cooperation is essential for excellent research and development due to the high cost of scientific programmes and technical operation of URLs, making it a precondition for providing secure solutions. This is important not only for deep geological repositories for radioactive waste disposal but also for other geoenergy applications, such as energy storage and geothermal energy utilization.