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Measurements Mechanisms And Models Of Heat Transport

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Measurements Mechanisms and Models of Heat Transport

Measurements  Mechanisms  and Models of Heat Transport Book
Author : Anne M. Hofmeister
Publisher : Elsevier
Release : 2018-11-16
ISBN : 0128099828
Language : En, Es, Fr & De

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Book Description :

Measurements, Mechanisms, and Models of Heat Transport offers an interdisciplinary approach to the dynamic response of matter to energy input. Using a combination of fundamental principles of physics, recent developments in measuring time-dependent heat conduction, and analytical mathematics, this timely reference summarizes the relative advantages of currently used methods, and remediates flaws in modern models and their historical precursors. Geophysicists, physical chemists, and engineers will find the book to be a valuable resource for its discussions of radiative transfer models and the kinetic theory of gas, amended to account for atomic collisions being inelastic. This book is a prelude to a companion volume on the thermal state, formation, and evolution of planets. Covering both microscopic and mesoscopic phenomena of heat transport, Measurements, Mechanisms, and Models of Heat Transport offers both the fundamental knowledge and up-to-date measurements and models to encourage further improvem Combines state-of-the-art measurements with core principles to lead to a better understanding of heat conduction and of radiative diffusion, and how these processes are linked Focuses on macroscopic models of heat transport and the underlying physical principles, providing the tools needed to solve many different problems in heat transport Connects thermodynamics with behavior of light in revising the kinetic theory of gas, which underlies all models of heat transport, and uses such links to re-derive formulae for blackbody emissions Explores all states of matter, with an emphasis on crystalline and amorphous solids

Heat Transport and Energetics of the Earth and Rocky Planets

Heat Transport and Energetics of the Earth and Rocky Planets Book
Author : Anne Hofmeister
Publisher : Elsevier
Release : 2019-11-22
ISBN : 0128189444
Language : En, Es, Fr & De

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Book Description :

Heat Transport and Energetics of the Earth and Rocky Planets provides a better understanding of the interior of the Earth by addressing the processes related to the motion of heat in large bodies. By addressing issues such as the effect of self-gravitation on the thermal state of the Earth, the effect of length-scales on heat transport, important observations of Earth, and a comparison to the behavior of other rocky bodies, readers will find clearly delineated discussions on the thermal state and evolution of the Earth. Using a combination of fundamentals, new developments and scientific and mathematical principles, the book summarizes the state-of-the-art. This timely reference is an important resource for geophysicists, planetary scientists, geologists, geochemists, and seismologists to gain a better understanding of the interior, formation and evolution of planetary bodies. Provides an interdisciplinary approach to the understanding of the thermal evolution of large planetary bodies, including contributed chapters from leading experts Includes relevant observations of Earth and large-scale heat transfer, a critical review of existing paradigms of the current thermal state of the Earth, and a discussion of heat flow on the other rocky planets Covers macroscopic phenomena as they pertain to deciphering the thermal structure of planetary bodies

Microscale Energy Transfer

Microscale Energy Transfer Book
Author : Chan L. Tien
Publisher : CRC Press
Release : 1997-11-01
ISBN : 9781560324591
Language : En, Es, Fr & De

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Book Description :

This text explores the field of microscale heat transfer in mechanical engineering. Experts from a wide range of science and engineering disciplines present topics that are built from simple macroscopic concepts and gradually lead into microscopic concepts. The book begins with an introductory chapter which discusses the history and the future directions of microscale heat transfer. It is then divided into two sections: the Fundamentals and the Applications.

Publications

Publications Book
Author : United States. National Bureau of Standards
Publisher :
Release : 1973
ISBN :
Language : En, Es, Fr & De

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Book Description :

Turbomachinery Fluid Dynamics and Heat Transfer

Turbomachinery Fluid Dynamics and Heat Transfer Book
Author : Hah
Publisher : CRC Press
Release : 1997-02-04
ISBN : 9780824798291
Language : En, Es, Fr & De

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Book Description :

This festschrift in honor of Professor Budugur Lakshminarayana's 60th birthday-based on the proceedings of a symposium on Turbomachinery Fluid Dynamics and Heat Transfer held recently at The Pennsylvania State University, University Park-provides authoritative and conclusive research results as well as new insights into complex flow features found in the turbomachinery used for propulsion, power, and industrial applications. Explaining in detail compressors, heat transfer fields in turbines, computational fluid dynamics, and unsteady flows, Turbomachinery Fluid Dynamics and Heat Transfer covers: Mixing mechanisms, annulus wall boundary layers, and the flow field in transonic turbocompressors The numerical implementation of turbulence models in a computer code Secondary flows, film cooling, and thermal turbulence modeling The visualization method of modeling using liquid crystals Innovative techniques in the computational modeling of compressor and turbine flows measurement in unsteady flows as well as axial flows and compressor noise generation And much more Generously illustrated and containing key bibliographic citations, Turbomachinery Fluid Dynamics and Heat Transfer is an indispensable resource for mechanical, design, aerospace, marine, manufacturing, materials, industrial, and reliability engineers; and upper-level undergraduate and graduate students in these disciplines.

Thermoelectricity and Heat Transport in Graphene and Other 2D Nanomaterials

Thermoelectricity and Heat Transport in Graphene and Other 2D Nanomaterials Book
Author : Serhii Shafraniuk
Publisher : Elsevier
Release : 2017-07-15
ISBN : 0323444903
Language : En, Es, Fr & De

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Book Description :

Thermoelectricity and Heat Transport in Graphene and Other 2D Nanomaterials describes thermoelectric phenomena and thermal transport in graphene and other 2-dimentional nanomaterials and devices. Graphene, which is an example of an atomic monolayered material, has become the most important growth area in materials science research, stimulating an interest in other atomic monolayeric materials. The book analyses flow management, measurement of the local temperature at the nanoscale level and thermoelectric transducers, with reference to both graphene and other 2D nanomaterials. The book covers in detail the mechanisms of thermoelectricity, thermal transport, interface phenomena, quantum dots, non-equilibrium states, scattering and dissipation, as well as coherent transport in low-dimensional junctions in graphene and its allotropes, transition metal dichalcogenides and boron nitride. This book aims to show readers how to improve thermoelectric transducer efficiency in graphene and other nanomaterials. The book describes basic ingredients of such activity, allowing readers to gain a greater understanding of fundamental issues related to the heat transport and the thermoelectric phenomena of nanomaterials. It contains a thorough analysis and comparison between theory and experiments, complemented with a variety of practical examples. Shows readers how to improve the efficiency of heat transfer in graphene and other nanomaterials with analysis of different methodologies Includes fundamental information on the thermoelectric properties of graphene and other atomic monolayers, providing a valuable reference source for materials scientists and engineers Covers the important models of thermoelectric phenomena and thermal transport in the 2D nanomaterials and nanodevices, allowing readers to gain a greater understanding of the factors behind the efficiency of heat transport in a variety of nanomaterials

Microscale and Nanoscale Heat Transfer

Microscale and Nanoscale Heat Transfer Book
Author : C.B. Sobhan,G.P. Peterson
Publisher : CRC Press
Release : 2008-06-12
ISBN : 1000654214
Language : En, Es, Fr & De

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Book Description :

Through analyses, experimental results, and worked-out numerical examples, Microscale and Nanoscale Heat Transfer: Fundamentals and Engineering Applications explores the methods and observations of thermophysical phenomena in size-affected domains. Compiling the most relevant findings from the literature, along with results from their own re

Microscale Engineering of Phase Change and Radiation Heat Transfer

Microscale Engineering of Phase Change and Radiation Heat Transfer Book
Author : Qingyang Wang
Publisher :
Release : 2020
ISBN :
Language : En, Es, Fr & De

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Book Description :

The rapid growth of modern economy and the increasingly high quality of human life over the last century are essentially attributed to the development of energy technologies, including the conversion, transport, storage, and utilization of energy. The transfer of thermal energy plays an instrumental role in virtually all energy related technologies. As such, exploring the fundamentals of heat transfer is of significant importance for both scientific advancement and technological development. Each of the basic heat transfer modes is governed by different length scales, understanding and engineering of which thus underpin the development of heat transfer technologies. In this dissertation, quantification and engineering of characteristic lengths in two different heat transfer mechanisms, namely, phase change heat transfer (PCHT) and radiation heat transfer, are studied. Liquid-vapor PCHT utilizes latent heat of vaporization to efficiently transport a large amount of thermal energy, which is being used in a variety of thermal energy conversion and management applications. The critical heat flux (CHF) of PCHT, either evaporation or boiling, is fundamentally limited by mass flux of the vapor departing from the liquid-vapor interface, known as the kinetic limit. This limit could be in theory greater than 1 kW cm2 on a planar surface, but its experimental realization has remained elusive. In the first part of this dissertation, by leveraging the small length scale for heat conduction and vapor bubble departure within a thin liquid film, a new "thin film boiling" mechanism is proposed and realized by confining the boiling liquid within a microscale film on a nanoporous membrane. Superior heat transfer performance is demonstrated with a high CHF of over 1.8 kW cm-2, which is among the highest reported values for PCHT on a planar surface and is within a factor of four of the calculated theoretical kinetic limit. Furthermore, by continuously shrinking the liquid film, a universal transition from boiling to evaporation is further identified for different fluids with varying surface tension values (water, ethanol, isopropanol, and perfluorohexane), and the heat transfer characteristics of the transition points are found to be close to the kinetic limit. The limiting factors dictating the transition between the two different heat transfer modes are also elucidated. In advanced materials for high temperature thermal transport such as thermal barrier coatings for turbine blades and heat transfer media in concentrated solar power plants, the radiative thermal transport, which is often negligible at room temperature, becomes comparable to or even more important than heat conduction. However, an effective thermal conductivity encompassing both heat transfer modes is often used at high temperatures, due to the lack of a convenient methodology to separate the contributions from conduction and radiation, especially for high temperature thermal measurement using the prevailing instrument called the laser flash analyzer (LFA). In particular, the characteristic length scale of radiation heat transfer is often elusive. In the second part of this dissertation, a transient coupled conduction/radiation model, with the realistic boundary conditions used in the LFA, is developed to study the transient heat transfer in high temperature materials. By identifying the propagation length of photons in different portions of the spectrum, heat transfer due to photons with direct transmission and diffusive transport is delineated. In the conductive thermal conductivity of semi-transparent materials obtained from the LFA, conventional models would still cause non-negligible error at high temperatures, while the coupled model developed here can accurately quantify the radiative contribution.

Computational Modeling of Shallow Geothermal Systems

Computational Modeling of Shallow Geothermal Systems Book
Author : Rafid Al-Khoury
Publisher : CRC Press
Release : 2011-09-30
ISBN : 0415596270
Language : En, Es, Fr & De

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Book Description :

A Step-by-step Guide to Developing Innovative Computational Tools for Shallow Geothermal Systems Geothermal heat is a viable source of energy and its environmental impact in terms of CO2 emissions is significantly lower than conventional fossil fuels. Shallow geothermal systems are increasingly utilized for heating and cooling of buildings and greenhouses. However, their utilization is inconsistent with the enormous amount of energy available underneath the surface of the earth. Projects of this nature are not getting the public support they deserve because of the uncertainties associated with them, and this can primarily be attributed to the lack of appropriate computational tools necessary to carry out effective designs and analyses. For this energy field to have a better competitive position in the renewable energy market, it is vital that engineers acquire computational tools, which are accurate, versatile and efficient. This book aims at attaining such tools. This book addresses computational modeling of shallow geothermal systems in considerable detail, and provides researchers and developers in computational mechanics, geosciences, geology and geothermal engineering with the means to develop computational tools capable of modeling the complicated nature of heat flow in shallow geothermal systems in rather straightforward methodologies. Coupled conduction-convection models for heat flow in borehole heat exchangers and the surrounding soil mass are formulated and solved using analytical, semi-analytical and numerical methods. Background theories, enhanced by numerical examples, necessary for formulating the models and conducting the solutions are thoroughly addressed. The book emphasizes two main aspects: mathematical modeling and computational procedures. In geothermics, both aspects are considerably challenging because of the involved geometry and physical processes. However, they are highly stimulating and inspiring. A good combination of mathematical modeling and computational procedures can greatly reduce the computational efforts. This book thoroughly treats this issue and introduces step-by-step methodologies for developing innovative computational models, which are both rigorous and computationally efficient.

Microscale Heat Transfer Fundamentals and Applications

Microscale Heat Transfer   Fundamentals and Applications Book
Author : S. KakaƧ,L.L. Vasiliev,Y. Bayazitoglu,Y. Yener
Publisher : Springer Science & Business Media
Release : 2005-04-29
ISBN : 9781402033599
Language : En, Es, Fr & De

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Book Description :

This volume provides a comprehensive state-of-the art assessment of the fundamentals of the Microscale heat transfer and transport phenomena and heat transfer and applications in Microsystems. The modern trend toward miniaturization of devices requires a better understanding of heat mass transfer phenomena in small dimensions. Devices having dimensions of order of microns are being developed for use of cooling of integrated circuits, and in biochemicals-biomedical applications and cryogenics. Microelectromechanical systems (MEMS) have an important impact in medicine, bioengineering, information technologies and other industries.

The Warming Papers

The Warming Papers Book
Author : David Archer,Raymond Pierrehumbert
Publisher : John Wiley & Sons
Release : 2013-04-29
ISBN : 1118687337
Language : En, Es, Fr & De

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Book Description :

Chosen for the 2011 ASLI Choice - Honorable Mention (History Category) for a compendium of the key scientific papers that undergird the global warming forecast. Global warming is arguably the defining scientific issue of modern times, but it is not widely appreciated that the foundations of our understanding were laid almost two centuries ago with the postulation of a greenhouse effect by Fourier in 1827. The sensitivity of climate to changes in atmospheric CO2 was first estimated about one century ago, and the rise in atmospheric CO2 concentration was discovered half a century ago. The fundamentals of the science underlying the forecast for human-induced climate change were being published and debated long before the issue rose to public prominence in the last few decades. The Warming Papers is a compendium of the classic scientific papers that constitute the foundation of the global warming forecast. The paper trail ranges from Fourier and Arrhenius in the 19th Century to Manabe and Hansen in modern times. Archer and Pierrehumbert provide introductions and commentary which places the papers in their context and provide students with tools to develop and extend their understanding of the subject. The book captures the excitement and the uncertainty that always exist at the cutting edge of research, and is invaluable reading for students of climate science, scientists, historians of science, and others interested in climate change.

Microgravity Research in Support of Technologies for the Human Exploration and Development of Space and Planetary Bodies

Microgravity Research in Support of Technologies for the Human Exploration and Development of Space and Planetary Bodies Book
Author : Committee on Microgravity Research,Space Studies Board,Commission on Physical Sciences, Mathematics, and Applications,Division on Engineering and Physical Sciences,National Research Council
Publisher : National Academies Press
Release : 2000-07-17
ISBN : 0309518679
Language : En, Es, Fr & De

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Book Description :

The frontier represented by the near solar system confronts humanity with intriguing challenges and opportunities. With the inception of the Human Exploration and Development of Space (HEDS) enterprise in 1995, NASA has acknowledged the opportunities and has accepted the very significant challenges. Microgravity Research in Support of Technologies for the Human Exploration and Development of Space and Planetary Bodies was commissioned by NASA to assist it in coordinating the scientific information relevant to anticipating, identifying, and solving the technical problems that must be addressed throughout the HEDS program over the coming decades. This report assesses scientific and related technological issues facing NASA's Human Exploration and Development of Space endeavor, looking specifically at mission enabling and enhancing technologies which, for development, require an improved understanding of fluid and material behavior in a reduced gravity environment.

Transport Properties of Foods

Transport Properties of Foods Book
Author : George D. Saravacos,Zacharias B. Maroulis
Publisher : CRC Press
Release : 2001-06-04
ISBN : 9780824706135
Language : En, Es, Fr & De

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Book Description :

This study covers all the transport properties of food materials and systems - exploring viscosity, moisture diffusivities, thermal conductivity and diffusivity, transport and permeability of small molecules, and heat and mass transfer coefficients. The authors provide physical, mathematical or empirical models of the transport processes for each application, as well as principal property values and measuring methods for various food products and systems.

Transport Phenomena in Biomedical Engineering

Transport Phenomena in Biomedical Engineering Book
Author : Robert A. Peattie,Robert J. Fisher,Joseph D. Bronzino,Donald R. Peterson
Publisher : CRC Press
Release : 2012-11-20
ISBN : 1439874638
Language : En, Es, Fr & De

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Book Description :

Design, analysis and simulation of tissue constructs is an integral part of the ever-evolving field of biomedical engineering. The study of reaction kinetics, particularly when coupled with complex physical phenomena such as the transport of heat, mass and momentum, is required to determine or predict performance of biologically-based systems wheth