Theoretical Study of Direct Contact Evaporation PDF Download
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Author: Ammar Ali Ojimi
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659642913
Category :
Languages : en
Pages : 180
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Book Description
The present book is a comprehensive theoretical investigation of the direct contact evaporation process of drops, which is growing because of change of phase, in an immiscible liquid. The attempt here is to gain fundamental understanding of the transport processes (hydrodynamic and heat transfer) that take place during the direct contact evaporation process. A theoretical model based on continuity, motion, momentum and energy equations in addition to the energy balance equation is developed, by using cellular model. This model aims to obtain characteristics of the direct contact evaporation of a single droplet bounded by a spherical cell of continuous liquid. Furthermore, these characteristics are used in order to develop a theoretical model aims to obtain the characteristics of the direct contact evaporation of multidroplets.
Author: Ammar Ali Ojimi
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659642913
Category :
Languages : en
Pages : 180
Get Book Here
Book Description
The present book is a comprehensive theoretical investigation of the direct contact evaporation process of drops, which is growing because of change of phase, in an immiscible liquid. The attempt here is to gain fundamental understanding of the transport processes (hydrodynamic and heat transfer) that take place during the direct contact evaporation process. A theoretical model based on continuity, motion, momentum and energy equations in addition to the energy balance equation is developed, by using cellular model. This model aims to obtain characteristics of the direct contact evaporation of a single droplet bounded by a spherical cell of continuous liquid. Furthermore, these characteristics are used in order to develop a theoretical model aims to obtain the characteristics of the direct contact evaporation of multidroplets.
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.
Author: W. Brutsaert
Publisher: Springer Science & Business Media
ISBN: 9401714975
Category : Science
Languages : en
Pages : 299
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Book Description
The phenomenon of evaporation in the natural environment is of interest in various diverse disciplines. This book is an attempt to present a coherent and organized introduction to theoretical concepts and relationships useful in analyzing this phe nomenon, and to give an outline of their history and their application. The main objective is to provide a better understanding of evaporation, and to connect some of the approaches and paradigms, that have been developed in different disciplines concerned with this phenomenon. The book is intended for professional scientists and engineers, who are active in hydrology, meteorology, agronomy, oceanography, climatology and related environ mental fields, and who wish to study prevailing concepts on evaporation. At the same time, I hope that the book will be useful to workers in fluid dynamics, who want to become acquainted with applications to an important and interesting natural phenomenon. As suggested in its subtitle, the book consists of three major parts. The first, consisting of Chapters I and 2, gives a general ouline of the problem and a history of the theories of evaporation from ancient times through the end of the nineteenth century. This history is far from exhaustive, but it sket~hes the background and the ideas that led directly to the scientific revolution in Europe and, ultimately, to our present-day knowledge.
Author: Yuri B. Zudin
Publisher: Springer
ISBN: 3030138151
Category : Science
Languages : en
Pages : 414
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Book Description
This monograph is focused mostly on the exposition of analytical methods for the solution of problems of strong phase change. A new theoretical model is proved useful in describing, with acceptable accuracy, problems of strong evaporation and condensation. The book is the first to treat the problem of asymmetry for evaporation/condensation. A semi-empirical model for the process is proposed for purposes of practical calculation of the process of strong evaporation. The “limiting schemes” of the vapor bubble growth are analyzed. The thermo-hydrodynamic problem of evaporating meniscus of a thin liquid film on a heated surface is considered. A theoretical analysis of the problem of evaporation of a drop levitating over a vapor cushion is performed. The problem of vapor condensation upon a transversal flow around a horizontal cylinder is considered. The second edition is extended by (i) the conjugate “strong evaporation - heat conduction” problem, (ii) the influence of accommodation coefficients on intensive processes of evaporation and condensation, (iii) the problem of supersonic condensation. This book is the first to present a comprehensive theoretical approach of boiling problems: nucleate boiling, superfluid helium phase transition, similarity between pseudo-boiling and subcritical pressure nucleate boiling. The target audience primarily comprises research experts in the field of thermodynamics and fluid dynamics, but the book may also be beneficial for graduate students.
Author: David Brutin
Publisher: Academic Press
ISBN: 0128008083
Category : Science
Languages : en
Pages : 464
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Book Description
Droplet Wetting and Evaporation provides engineers, students, and researchers with the first comprehensive guide to the theory and applications of droplet wetting and evaporation. Beginning with a relevant theoretical background, the book moves on to consider specific aspects, including heat transfer, flow instabilities, and the drying of complex fluid droplets. Each chapter covers the principles of the subject, addressing corresponding practical issues and problems. The text is ideal for a broad range of domains, from aerospace and materials, to biomedical applications, comprehensively relaying the challenges and approaches from the different communities leading the way in droplet research and development. - Provides a broad, cross-subject coverage of theory and application that is ideal for engineers, students and researchers who need to follow all major developments in this interdisciplinary field - Includes comprehensive discussions of heat transfer, flow instabilities, and the drying of complex fluid droplets - Begins with an accessible summary of fundamental theory before moving on to specific areas such as heat transfer, flow instabilities, and the drying of complex fluid droplets
Author: Petros Antonis
Publisher:
ISBN: 9781681173085
Category :
Languages : en
Pages : 294
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Book Description
Heat is the kinetic energy of particles as they vibrate. If we heat the particles at one end of a material the particles at that end vibrate more (have more kinetic energy) and bump into the neighboring particles which causes them to vibrate more. They collide with their neighbors and so the energy passes from one particle to another through the material. Evaporation and condensation are two processes through which matter changes from one state to another. Matter can exist in three different states: solid, liquid, or gas. In evaporation, matter changes from a liquid to a gas. In condensation, matter changes from a gas to a liquid. All matter is made of tiny moving particles called molecules. Evaporation and condensation happen when these molecules gain or lose energy in the form of heat. Evaporation happens when a liquid is heated. The heat gives the liquid's molecules more energy. This energy causes the molecules to move faster. If they gain enough energy, the molecules near the surface break away. These molecules escape the liquid and enter the air as gas. Condensation happens when molecules in a gas cool down. As the molecules lose heat, they lose energy. As a result they slow down. They move closer to other gas molecules. Finally these molecules collect together to form a liquid. The theoretical analysis and modeling of heat and mass transfer rates produced in evaporation and condensation processes are noteworthy concerns in a design of extensive range of industrial processes and devices. The book Evaporation, Condensation and Heat transfer emphasizes on the current issues of modeling on evaporation, water vapor condensation, heat transfer and exchanger, and on fluid flow in different aspects. The approaches would be applicable in various industrial purposes as well. The advanced idea and information described here will be fruitful for the readers to find a sustainable solution in an industrialized society..
Author: Mohamed Khayet Souhaimi
Publisher: Elsevier
ISBN: 0080932223
Category : Technology & Engineering
Languages : en
Pages : 493
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Book Description
Modern membrane engineering is critical to the development of process-intensification strategies and to the stimulation of industrial growth. Membrane Distillation (MD) is a broad reference that covers specific information on membranes available and methods for MD membrane preparation and characterization. The book offers an introduction to the terminology and fundamental concepts as well as a historical review of MD development. Commercial membranes used in MD as well as laboratory-made membranes, including emerging membranes, are described in detail and illustrated by a number of clear and instructive schematic drawings and images. - A comprehensive review on the development of MD membranes, MD modules, MD membrane characterization, MD configurations, applications in different areas and theoretical models - Introduction to the terminology and fundamental concepts associated with MD as well as an historical review of MD development - Description of commercial membranes used in MD as well as laboratory-made membranes, including emerging membranes
Author: Courtney Leigh Herring Bonuccelli
Publisher:
ISBN:
Category : Evaporation
Languages : en
Pages : 181
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Book Description
Author:
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 420
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Book Description
Author: Gianpietro Elvio Cossali
Publisher: Springer Nature
ISBN: 3030492745
Category : Technology & Engineering
Languages : en
Pages : 403
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Book Description
This book describes analytical methods for modelling drop evaporation, providing the mathematical tools needed in order to generalise transport and constitutive equations and to find analytical solutions in curvilinear coordinate systems. Transport phenomena in gas mixtures are treated in considerable detail, and the basics of differential geometry are introduced in order to describe interface-related transport phenomena. One chapter is solely devoted to the description of sixteen different orthogonal curvilinear coordinate systems, reporting explicitly on the forms of their differential operators (gradient, divergent, curl, Laplacian) and transformation matrices. The book is intended to guide the reader from mathematics, to physical descriptions, and ultimately to engineering applications, in order to demonstrate the effectiveness of applied mathematics when properly adapted to the real world. Though the book primarily addresses the needs of engineering researchers, it will also benefit graduate students.
