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Dynamics of Adsorptive Systems for Heat Transformation

Author : Alessio Sapienza

Publisher : Springer

Page : 94 pages

File Size : 41,13 MB

Release : 2018-03-07

Category : Science

ISBN : 3319512870

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Book Description

This book investigates the adsorption dynamics of water, methanol, ethanol, and ammonia vapor on loose and consolidated adsorbent beds, as well as the impact of this aspect on the overall performance of adsorption systems for heat transformation. In particular, it presents the results of kinetic measurements made using the large temperature jump (LTJ) method, the most efficient way to study adsorption dynamics under realistic operating conditions for adsorptive heat transformers. The information provided is especially beneficial for all those working on the development of novel adsorbent materials and advanced adsorbers for heating and cooling applications. Today, technologies and systems based on adsorption heat transformation (AHT) processes offer a fascinating option for meeting the growing worldwide demand for air conditioning and space heating. Nevertheless, considerable efforts must still be made in order to enhance performance so as to effectively compete with commonly used electrical compression and absorption machines. For this purpose, intelligent design for adsorption units should above all focus on finding a convenient choice of adsorbent material by means of a comprehensive analysis that takes into account both thermodynamic and dynamic aspects. While the thermodynamic properties of the AHT cycle have been studied extensively, the dynamic optimization of AHT adsorbers is still an open issue. Several efforts have recently been made in order to analyze AHT dynamics, which greatly influence overall AHT performance.



Adsorption Heat Pumps

Author : Daniel B. Boman

Publisher : Springer Nature

Page : 73 pages

File Size : 14,11 MB

Release : 2021-05-21

Category : Science

ISBN : 3030721809

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Book Description

This volume introduces the fundamentals of adsorption heat pumps, beginning with the simplest cycle and building to the most complex. Selection of adsorbents and refrigerants, design of adsorption beds and auxiliary heat exchangers, and applications for different designs are all discussed. The book educates engineering students, engineers, and researchers about an environmentally friendly alternative to vapor compression refrigeration systems promising for many applications. The authors cover thermodynamic cycles, working materials for the cycles, and aspects of designing and modeling adsorption heat pumps. Elucidates the various applications of adsorption heat pumps; Illustrates modeling techniques for quickly screening new working materials early in their development; Provides comprehensive review of cycle types, with discussion of the applications for which they are best suited; Appropriate for graduate courses on advanced thermodynamics, design of thermal systems, sustainable energy technology, refrigeration technologies, and thermal control of electronics.



Diffusion in Nanoporous Materials, 2 Volumes

Author : Jörg Kärger

Publisher : John Wiley & Sons

Page : 932 pages

File Size : 39,65 MB

Release : 2012-10-29

Category : Science

ISBN : 352731024X

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Book Description

Atoms and molecules in all states of matter are subject to continuous irregular movement. This process, referred to as diffusion, is among the most general and basic phenomena in nature and determines the performance of many technological processes. This book provides an introduction to the fascinating world of diffusion in microporous solids. Jointly written by three well-known researchers in this field, it presents a coherent treatise, rather than a compilation of separate review articles, covering the theoretical fundamentals, molecular modeling, experimental observation and technical applications. Based on the book Diffusion in Zeolites and other Microporous Solids, originally published in 1992, it illustrates the remarkable speed with which this field has developed since that time. Specific topics include: new families of nanoporous materials, micro-imaging and single-particle tracking, direct monitoring of transient profiles by interference microscopy, single-file diffusion and new approaches to molecular modeling.



Heat Pipes and Solid Sorption Transformations

Author : L. L. Vasiliev

Publisher : CRC Press

Page : 536 pages

File Size : 33,64 MB

Release : 2017-03-29

Category : Heat pipes

ISBN : 9781138077379

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Book Description

"Preface This book covers the state of the art of adsorption research and technologies for relevant applications based on the use of the efficient heat transfer devices--heat pipes and two-phase thermosyphons--with the objectives of energy efficiency and sustainability. The severities of energy crisis and environmental problems have been calling for rapid developments in Freon-free air conditioning and heat pump technologies, the heat exchangers, which are considered as the components of prime importance. The concerns of energy consumption and environmental pollution urge researchers to work on the development of clean energy and the utilization of waste energy. From this viewpoint, interest in fuel cells and thermally activated (heat pipe heat exchangers) adsorption systems using natural refrigerants and/or alternative to hydrofluorocarbon-based refrigerants has increased significantly. The quest to accomplish a safe and comfortable environment has always been one of the main preoccupations of the sustainability of human life. Accordingly, during the past few decades, research aimed at the development of thermally powered adsorption cooling technologies has intensified. They offer two main benefits: (1) reduction in energy consumption and (2) adoption of environmentally benign adsorbent/refrigerant pairs, without compromising the desired level of comfort conditions. The efficiency of new power sources (co-generation, tri-generation systems, fuel cells, photovoltaic systems) can be increased with the help of heat pipe heat exchangers, solid sorption heat pumps, refrigerators, accumulators of heat and cold, heat transformers, and fuel gas (natural gas and hydrogen) storage systems. Low-temperature power systems are generally significantly less expensive to build"--



The Differential Equations Of Thermodynamics

Author : Vi͡acheslav Vladimirovich Sychev

Publisher : CRC Press

Page : 268 pages

File Size : 37,21 MB

Release : 1991-09-01

Category : Science

ISBN : 9781560321217

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Book Description

In this book the author systemizes mathematical tools of thermodynamics, and concurrently emphasizes questions that are often a source of error in thermodynamic calculations. He deals with thermodynamic characteristic functions, the differential equations for a one-phase region and more.



Design, Simulation and Optimization of Adsorptive and Chromatographic Separations: A Hands-On Approach

Author : Kevin R. Wood

Publisher : John Wiley & Sons

Page : 434 pages

File Size : 39,10 MB

Release : 2018-07-16

Category : Science

ISBN : 3527344691

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Book Description

A comprehensive resource to the construction, use, and modification of the wide variety of adsorptive and chromatographic separations Design, Simulation and Optimization of Adsorptive and Chromatographic Separations offers the information needed to effectively design, simulate, and optimize adsorptive and chromatographic separations for a wide range of industrial applications. The authors?noted experts in the field?cover the fundamental principles, the applications, and a range of modeling techniques for the processes. The text presents a unified approach that includes the ideal and intermediate equations and offers a wealth of hands-on case studies that employ the rigorous simulation packages Aspen Adsorption and Aspen Chromatography. The text reviews the effective design strategies, details design considerations, and the assumptions which the modelers are allowed to make. The authors also cover shortcut design methods as well as mathematical tools that help to determine optimal operating conditions. This important text: -Covers everything from the underlying pheonmena to model optimization and the customization of model code -Includes practical tutorials that allow for independent review and study -Offers a comprehensive review of the construction, use, and modification of the wide variety of adsorptive and chromatographic separations -Contains contributions from three noted experts in the field Written for chromatographers, process engineers, ehemists, and other professionals, Design, Simulation and Optimization of Adsorptive and Chromatographic Separations offers a comprehensive review of the construction, use, and modification of adsorptive and chromatographic separations.



Advances in Thermal Energy Storage Systems

Author : Luisa F. Cabeza

Publisher : Woodhead Publishing

Page : 799 pages

File Size : 23,59 MB

Release : 2020-10-28

Category : Technology & Engineering

ISBN : 0128198885

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Book Description

Advances in Thermal Energy Storage Systems, 2nd edition, presents a fully updated comprehensive analysis of thermal energy storage systems (TES) including all major advances and developments since the first edition published. This very successful publication provides readers with all the information related to TES in one resource, along with a variety of applications across the energy/power and construction sectors, as well as, new to this edition, the transport industry. After an introduction to TES systems, editor Dr. Prof. Luisa Cabeza and her team of expert authors consider the source, design and operation of the use of water, molten salts, concrete, aquifers, boreholes and a variety of phase-change materials for TES systems, before analyzing and simulating underground TES systems. This edition benefits from 5 new chapters covering the most advanced technologies including sorption systems, thermodynamic and dynamic modelling as well as applications to the transport industry and the environmental and economic aspects of TES. It will benefit researchers and academics of energy systems and thermal energy storage, construction engineering academics, engineers and practitioners in the energy and power industry, as well as architects of plants and storage systems and R&D managers. - Includes 5 brand new chapters covering Sorption systems, Thermodynamic and dynamic models, applications to the transport sector, environmental aspects of TES and economic aspects of TES - All existing chapters are updated and revised to reflect the most recent advances in the research and technologies of the field - Reviews heat storage technologies, including the use of water, molten salts, concrete and boreholes in one comprehensive resource - Describes latent heat storage systems and thermochemical heat storage - Includes information on the monitoring and control of thermal energy storage systems, and considers their applications in residential buildings, power plants and industry



Adsorption Refrigeration Technology

Author : Ruzhu Wang

Publisher : John Wiley & Sons

Page : 524 pages

File Size : 45,41 MB

Release : 2014-06-23

Category : Technology & Engineering

ISBN : 1118197437

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Book Description

Gives readers a detailed understanding of adsorption refrigeration technology, with a focus on practical applications and environmental concerns Systematically covering the technology of adsorption refrigeration, this book provides readers with a technical understanding of the topic as well as detailed information on the state-of-the-art from leading researchers in the field. Introducing readers to background on the development of adsorption refrigeration, the authors also cover the development of adsorbents, various thermodynamic theories, the design of adsorption systems and adsorption refrigeration cycles. The book guides readers through the research process, covering key aspects such as: the principle of adsorption refrigeration; choosing adsorbents according to different characteristics; thermodynamic equations; methods for the design of heat exchangers for adsorbers; and the advanced adsorption cycles needed. It is also valuable as a reference for professionals working in these areas. Covers state-of-the art of adsorption research and technologies for relevant applications, working from adsorption working pairs through to the application of adsorption refrigeration technology for low grade heat recovery Assesses sustainable alternatives to traditional refrigeration methods, such as the application of adsorption refrigeration systems for solar energy and waste heat Includes a key chapter on the design of adsorption refrigeration systems as a tutorial for readers new to the topic; the calculation models for different components and working processes are also included Takes real-world examples giving an insight into existing products and installations and enabling readers to apply the knowledge to their own work Academics researching low grade energy utilization and refrigeration; Graduate students of refrigeration and low grade energy utilization; Experienced engineers wanting to renew knowledge of adsorption technology,Engineers working at companies developing adsorption chillers; Graduate students working on thermally driven systems; Advanced undergraduates for the Refrigeration Principle as a part of thermal driven refrigeration technology.



Advancements in Non-Conventional Cooling and Thermal Storage Strategies

Author : Bidyut Baran Saha

Publisher : John Wiley & Sons

Page : 388 pages

File Size : 39,66 MB

Release : 2024-11-13

Category : Technology & Engineering

ISBN : 1394189923

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Book Description

An exploration of the technical, economic, and energy-saving aspects of the design, modeling, and operation of non-conventional cooling and heating systems Cooling and heating can collectively constitute one of the largest sources of energy consumption in a modern building, with attendant costs and sustainability concerns. As the global climate changes and temperature extremes produce demand for even greater energy consumption, energy-efficient methods for cooling interior spaces have become more important than ever. Our sustainable future demands non-conventional methods for cooling and thermal storage which can meet the demands of a changing climate and an efficient, renewable power grid. Advancements in Non-Conventional Cooling and Thermal Storage Strategies offers a detailed introduction to the latest cutting-edge space conditioning technologies for buildings. Beginning with an overview of activated carbon-based adsorbents and their potential heating and cooling applications, it moves to an analysis of Phase Change Materials (PCMs) as a potential sustainable cooling source. Thorough, rigorous, and fully up to date, it's indispensable for a range of professionals working to make habitable, energy-efficient human spaces. Advancements in Non-Conventional Cooling and Thermal Storage Strategies readers will also find: Techniques for both active and passive space conditioning systems Detailed discussion of topics including adsorbent-refrigerant pairings, techniques for incorporating fresh air at high air change per hour, and many more A composite case study with examples from across the globe to provide an understanding of the technical requirements. Advancements in Non-Conventional Cooling and Thermal Storage Strategies is ideal for researchers and professional mechanical and civil engineers, those working in space-cooling, HVAC, and building design industries, as well as research and design personnel of HVAC equipment manufacturing industry.



Nanocomposite Sorbents for Multiple Applications

Author : Yu. I. Aristov

Publisher : CRC Press

Page : 334 pages

File Size : 48,86 MB

Release : 2020-03-02

Category : Technology & Engineering

ISBN : 135164484X

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Book Description

This book presents the first ever comprehensive survey of a new family of nanocomposite sorbents “salt in porous matrix” (CSPMs). These composites have recently been developed for selective sorption of water, alcohols, ammonia, and carbon dioxide. They owe their origin to the catchy idea of target-oriented tailoring of materials with predetermined adsorption properties harmonized with a particular adsorption process. The book develops the concept of target-oriented synthesis and suggests tools for tailoring new adsorbent materials adapted to multiple practical applications. It describes properties of approximately 50 new CSPMs of water, alcohols, ammonia, and carbon dioxide, including the data obtained in the author’s laboratory and literature available by the end of 2018. These data can be used for engineering calculations and analysis of practical applications. The book also discusses potential applications of these sorbents for storage and transformation of low-temperature heat, gas drying, maintenance of relative humidity in museums, and regeneration of heat and moisture in ventilation systems.