Entransy in Phase-Change Systems

Entransy in Phase-Change Systems PDF Author: Junjie Gu
Publisher: Springer
ISBN: 3319074288
Category : Science
Languages : en
Pages : 66

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Book Description
Entransy in Phase-Change Systems summarizes recent developments in the area of entransy, especially on phase-change processes. This book covers new developments in the area including the great potential for energy saving for process industries, decreasing carbon dioxide emissions, reducing energy bills and improving overall efficiency of systems. This concise volume is an ideal book for engineers and scientists in energy-related industries.

Entransy in Phase-Change Systems

Entransy in Phase-Change Systems PDF Author: Junjie Gu
Publisher: Springer
ISBN: 3319074288
Category : Science
Languages : en
Pages : 66

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Book Description
Entransy in Phase-Change Systems summarizes recent developments in the area of entransy, especially on phase-change processes. This book covers new developments in the area including the great potential for energy saving for process industries, decreasing carbon dioxide emissions, reducing energy bills and improving overall efficiency of systems. This concise volume is an ideal book for engineers and scientists in energy-related industries.

Phase Change Materials and Their Applications

Phase Change Materials and Their Applications PDF Author: Mohsen Mhadhbi
Publisher: BoD – Books on Demand
ISBN: 1789235308
Category : Technology & Engineering
Languages : en
Pages : 176

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Book Description
Today, the application of phase change materials (PCMs) has developed in different industries, including the solar cooling and solar power plants, photovoltaic electricity systems, the space industry, waste heat recovery systems, preservation of food and pharmaceutical products, and domestic hot water. PCMs use the principle of latent heat thermal storage to absorb energy in large quantities when there is a surplus and release it when there is a deficit. This promising technology has already been successfully implemented in many construction projects. The aim of this book is to assist the scientists and to provide the reader with a comprehensive overview of the properties that characterize the phase change materials from theoretical and experimental perspectives with a focus on their technological applications. The present status and future perspectives of phase change material are discussed.

High-Temperature Phase Change Materials for Thermal Energy Storage

High-Temperature Phase Change Materials for Thermal Energy Storage PDF Author: S. Harikrishnan
Publisher: Elsevier
ISBN: 0443136882
Category : Science
Languages : en
Pages : 390

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Book Description
High-Temperature Phase Change Materials for Thermal Energy Storage covers the fundamentals, thermal characteristics, measurement, design, and applications of high-temperature phase change materials (PCMs) for thermal energy storage, supported by examples and numerical modeling. The differences between low-temperature and high-temperature PCMs are examined with respect to thermophysical properties, phase change properties, and melting/solidification processes, with detailed coverage of how to alter or shorten the phase transition temperature range between melting and solidification, providing routes for the utilization of PCMs for specific high-temperature applications. The book also addresses key challenges, such as the design of PCM containers, phase transition temperature with little deviation, high latent heat capacity, thermal conductivity, viscosity, efficiency, ecocompatibility, and cost. This book is a valuable resource for researchers, advanced students, and scientists across the areas of energy storage, power generation, energy engineering, thermodynamics, materials science, renewable energy, energy management, mechanical engineering, and chemical engineering as well as engineers, research and development professionals, and other industry personnel with an interest in thermal energy storage design and materials. Focuses on high-temperature PCMs for thermal energy storage, with real-life applications Provides detailed information on fundamentals, thermal characteristics, measurement, and design Addresses key challenges and includes examples, numerical studies, and modeling

Thermal System Optimization

Thermal System Optimization PDF Author: Vivek K. Patel
Publisher: Springer
ISBN: 303010477X
Category : Science
Languages : en
Pages : 477

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Book Description
This 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.

Thermodynamics of Finite Systems and the Kinetics of First-Order Phase Transitions

Thermodynamics of Finite Systems and the Kinetics of First-Order Phase Transitions PDF Author: Juern Schmelzer
Publisher: Vieweg+Teubner Verlag
ISBN: 9783322964281
Category : Technology & Engineering
Languages : de
Pages : 209

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Book Description
This booklet is devoted to the thermodynamic and kinetic description of first-order phase transitions. In general, the matter of the world exists in different phases. Normally phase ctlanges take place in ther­ modynamic equilibrium, which will be considered here. Typically,the system is rapidly quenched from a one-phase thermal equilibrium state to a nonequilibrium situation. During the so-ca lIed equilibrium phase transformation process the quenched supersaturated system evolves from the nonequilibrium state to an equilibrium one which consists of two coexisting phases. In aseries of books on phase transitions and critical phenomena (DDMB, GREEN, lEBDWITZ, 1972 - 19B3) an immense amount of material to different aspects of ttlis topic is summarized. The other type of phase transitions takes place in systems far from equilibrium. Due to 'the nonequi1ibrium boundary conditions and the flu­ xes from the environment into the system the final state of this so­ called nonequilibrium phase transition is a stable nonequilibrium si­ tuation. Such interesting processes (e. g. pattern formation, multista­ bi1ity) do not appear only in physics but also in chemistry, meteorolo­ gy, biology and many areas of engineering. Concerning questions in this context we recommend the reader to the monographs by HAKEN (197B), and EBElING, FEISTEl (1982). An overview of the problems of recent interest in this field is given in the Proceedings of the Third International Conference on Irreversible Processes and Dissipative Structures, edited by EBElING and Ul8RICHT (1986).

Phase Transitions and Relaxation in Systems with Competing Energy Scales

Phase Transitions and Relaxation in Systems with Competing Energy Scales PDF Author: T. Riste
Publisher: Springer Science & Business Media
ISBN: 9401119082
Category : Science
Languages : en
Pages : 456

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Book Description
Systems with competing energy scales are widespread and exhibit rich and subtle behaviour, although their systematic study is a relatively recent activity. This text presents lectures given at a NATO Advanced Study Institute reviewing the current knowledge and understanding of this fascinating subject, particularly with regard to phase transitions and dynamics, at an advanced tutorial level. Both general and specific aspects are considered, with competitions having several origins; differences in intrinsic interactions, interplay between intrinsic and extrinsic effects, such as geometry and disorder; irreversibility and non-equilibration. Among the specific physical application areas are supercooled liquids and glasses, high-temperature superconductors, flux or vortex pinning and motion, charge density waves, domain growth and coarsening, and electron solidification.

Phase Transitions of Simple Systems

Phase Transitions of Simple Systems PDF Author: Boris M. Smirnov
Publisher: Springer Science & Business Media
ISBN: 3540715142
Category : Science
Languages : en
Pages : 249

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Book Description
This monograph develops a unified microscopic basis for phases and phase changes of bulk matter and small systems, based on classical physics. It describes the thermodynamics of ensembles of particles and explains phase transition in gaseous and liquid systems. The origins are derived from simple but physically relevant models of how transitions occur between rigid and fluid states, of how phase equilibria arise, and how they differ for small and large systems.

Phase Change Materials

Phase Change Materials PDF Author:
Publisher:
ISBN: 9781925823387
Category :
Languages : en
Pages :

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Book Description
Phase change materials (PCMs) can store and release heat, while they are changing phase. They allow relatively large amount of energy to be stored in comparatively small volumes. Due to their attractive and controllable properties, they are useful in many applications. For instance, PCMs have been used as smart building materials, energy storage devices, heat recovering agents, etc. By virtue of their properties, these materials have also found applications in smart textiles and aerospace industry. This book aims to review the synthesis and properties of a variety of functional organic and inorganic phase change material systems developed in the recent years for advanced applications. The book is a valuable reference text for chemical, materials and polymer engineers, as well as practicing scientists and researchers in both academia and industry. It is also a useful resource for postgraduate university students in chemical, materials and polymer engineering disciplines, along with interdisciplinary streams. For more details, please visit https://centralwestpublishing.com.

Transport Phenomena in Multiphase Systems

Transport Phenomena in Multiphase Systems PDF Author: Amir Faghri
Publisher: Academic Press
ISBN:
Category : Multiphase flow
Languages : en
Pages : 1072

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Book Description
Engineering students in a wide variety of engineering disciplines from mechanical and chemical to biomedical and materials engineering must master the principles of transport phenomena as an essential tool in analyzing and designing any system or systems wherein momentum, heat and mass are transferred. This textbook was developed to address that need, with a clear presentation of the fundamentals, ample problem sets to reinforce that knowledge, and tangible examples of how this knowledge is put to use in engineering design. Professional engineers, too, will find this book invaluable as reference for everything from heat exchanger design to chemical processing system design and more. * Develops an understanding of the thermal and physical behavior of multiphase systems with phase change, including microscale and porosity, for practical applications in heat transfer, bioengineering, materials science, nuclear engineering, environmental engineering, process engineering, biotechnology and nanotechnology * Brings all three forms of phase change, i.e., liquid vapor, solid liquid and solid vapor, into one volume and describes them from one perspective in the context of fundamental treatment * Presents the generalized integral and differential transport phenomena equations for multi-component multiphase systems in local instance as well as averaging formulations. The molecular approach is also discussed with the connection between microscopic and molecular approaches * Presents basic principles of analyzing transport phenomena in multiphase systems with emphasis on melting, solidification, sublimation, vapor deposition, condensation, evaporation, boiling and two-phase flow heat transfer at the micro and macro levels * Solid/liquid/vapor interfacial phenomena, including the concepts of surface tension, wetting phenomena, disjoining pressure, contact angle, thin films and capillary phenomena, including interfacial balances for mass, species, momentum, and energy for multi-component and multiphase interfaces are discussed * Ample examples and end-of-chapter problems, with Solutions Manual and PowerPoint presentation available to the instructors

Direct-Contact Heat Transfer

Direct-Contact Heat Transfer PDF Author: Frank Kreith
Publisher: Springer Science & Business Media
ISBN: 3662301822
Category : Science
Languages : en
Pages : 400

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Book Description
to increase the use of direct contact processes, the National Science Foundation sup ported a workshop on direct contact heat transfer at the Solar Energy Research Insti tute in the summer of 1985. We served as organizers for this workshop, which em phasized an area of thermal engineering that, in our opinion, has great promise for the future, but has not yet reached the point of wide-spread commercial application. Hence, a summary of the state of knowledge at this point is timely. The workshop had a dual objective: 1. To summarize the current state of knowledge in such a form that industrial practi tioners can make use of the available information. 2. To indicate the research and development needed to advance the state-of-the-art, indicating not only what kind of research is needed, but also the industrial poten tial that could be realized if the information to be obtained through the proposed research activities were available.