Download Free Falling Films In Desalination Book in PDF and EPUB Free Download. You can read online Falling Films In Desalination and write the review.

This book covers the simulation of evaporating saltwater falling films with and without turbulence wires. The methods presented within can be applied to a variety of applications including the food and pharmaceutical industry, as well as in nuclear technology. This topic is ideal for researchers in chemical engineering.
In dieser Arbeit wurde die Filmströmung auf horizontalen Rohren und ihr Einfluss auf das Kristallisationsfouling in Rieselfilmverdampfern zur Meerwasserentsalzung eingehend untersucht. Darüber hinaus wurden die Auswirkungen zweier nicht-ionischer, oberflächenaktiver Substanzen auf einen Fallfilm detailliert beleuchtet. Die ausgewählten Block-Copolymere wurden umfassend hinsichtlich ihrer Oberflächenaktivität analysiert und gegenübergestellt. In einem eigens konstruierten Versuchsstand wurde erstmalig die axiale Flüssigkeitsausbreitung auf einem horizontalen Rohr bei der initialen Benetzung der Oberfläche untersucht. Ein weiterer neu entwickelter Versuchsaufbau ermöglichte es, die Flüssigkeitsfilmdicke entlang und um den Umfang eines horizontalen Rohres mittels eines Lichtbandmikrometers zu messen. Eine komplexe Auswertungsmethodik wurde entwickelt, um zusätzlich die Wellenbildung auf dem Film anhand des Frequenzspektrums zu analysieren. Ein Rieselfilmverdampfer im Technikumsmaßstab diente dazu, Untersuchungen hinsichtlich des Kristallisationsfoulings unter praxisnahen Bedingungen durchzuführen. Die lokale Kristallschichtdicke und spezifische Belagmenge auf den horizontalen Rohren wurden in einer umfassenden Parameterstudie bestimmt. Die Flüssigkeitsfilmdicke und die Wellenbewegung des Films haben einen signifikanten Einfluss auf die Belagbildung auf den Verdampferrohren. Der Zusammenhang zwischen der Filmströmung und dem Stofftransport der belagbildenden Salzionen zur Rohroberfläche ist dabei von entscheidender Bedeutung. Weitergehend konnten drastische Veränderungen der Filmströmung durch die oberflächenaktiven Substanzen ermittelt werden, die eine Verringerung des Kristallisationsfoulings bewirken können. Der Einfluss der oberflächenaktiven Substanzen auf die Filmströmung steht dabei im engen Zusammenhang mit ihrer Oberflächenaktivität und ihrem Adsorptionsverhalten.
Industrial desalination of sea and brackish water is becoming an essential part in providing sustainable sources of fresh water for a larger number of communities around the world. Desalination is a main source of fresh water in the Gulf countries, a number of the Caribbean and Mediterranean Islands, and several municipalities in a large number of countries. As the industry expands there is a pressing need to have a clear and well-written textbook that focuses on desalination fundamentals and other industrial aspects.This book focuses on the processes widely used in industry, which include multistage flash desalination and reverse osmosis. Also, other desalination processes with attractive features and high potential are featured. It includes a large number of solved examples, which are explained in simple and careful matter that allow the reader to follow and understand the development. The data used in the development of the examples and case studies are extracted from existing desalination plants.This title also includes comparisons of model predictions against results reported in literature as well as available experimental and industrial data. Several industries include similar unit operation processes, i.e., evaporators, condensers, flashing units, membrane separation, and chemical treatment. Examples of such industries include wastewater treatment, food, petroleum, petrochemical, power generation, and pulp and paper. Process fundamentals and design procedures of such unit processes follow the same procedures given in this textbook.
Microfluidics represent great potential for chemical processes design, development, optimization, and chemical engineering bolsters the project design of industrial processes often found in large chemical plants. Together, microfluidics and chemical engineering can lead to a more complete and comprehensive process. Process Analysis, Design, and Intensification in Microfluidics and Chemical Engineering provides emerging research exploring the theoretical and practical aspects of microfluidics and its application in chemical engineering with the intention of building pathways for new processes and product developments in industrial areas. Featuring coverage on a broad range of topics such as design techniques, hydrodynamics, and numerical modelling, this book is ideally designed for engineers, chemists, microfluidics and chemical engineering companies, academicians, researchers, and students.
Low Grade Heat Driven Multi-effect Distillation and Desalination describes the development of advanced multi-effect evaporation technologies that are driven by low grade sensible heat, including process waste heat in refineries, heat rejection from diesel generators or microturbines, and solar and geothermal energy. The technologies discussed can be applied to desalination in remote areas, purifying produced water in oil-and-gas industries, and to re-concentrate process liquor in refineries. This book is ideal for researchers, engineering scientists, graduate students, and industrial practitioners working in the desalination, petrochemical, and mineral refining sectors, helping them further understand the technologies and opportunities that relate to their respective industries. For researchers and graduate students, the core enabling ideas in the book will provide insights and open up new horizons in thermal engineering. Focuses on advanced, yet practical, distillation technologies using low-grade sensible heat Explains the new design paradigm that must accompany the development of technologies Contains key experimental data that serves to prove the core concepts that underpin the new technologies Covers extensive thermo-economic analyses of the technologies, the price point for adoption, capital cost comparison with existing technologies, operating costs, and net present values
Falling Liquid Films gives a detailed review of state-of-the-art theoretical, analytical and numerical methodologies, for the analysis of dissipative wave dynamics and pattern formation on the surface of a film falling down a planar inclined substrate. This prototype is an open-flow hydrodynamic instability, that represents an excellent paradigm for the study of complexity in active nonlinear media with energy supply, dissipation and dispersion. It will also be of use for a more general understanding of specific events characterizing the transition to spatio-temporal chaos and weak/dissipative turbulence. Particular emphasis is given to low-dimensional approximations for such flows through a hierarchy of modeling approaches, including equations of the boundary-layer type, averaged formulations based on weighted residuals approaches and long-wave expansions. Whenever possible the link between theory and experiment is illustrated, and, as a further bridge between the two, the development of order-of-magnitude estimates and scaling arguments is used to facilitate the understanding of basic, underlying physics. This monograph will appeal to advanced graduate students in applied mathematics, science or engineering undertaking research on interfacial fluid mechanics or studying fluid mechanics as part of their program. It will also be of use to researchers working on both applied, fundamental theoretical and experimental aspects of thin film flows, as well as engineers and technologists dealing with processes involving isothermal or heated films. This monograph is largely self-contained and no background on interfacial fluid mechanics is assumed.
Heat and mass transfer is the core science for many industrial processes as well as technical and scientific devices. Automotive, aerospace, power generation (both by conventional and renewable energies), industrial equipment and rotating machinery, materials and chemical processing, and many other industries are requiring heat and mass transfer processes. Since the early studies in the seventeenth and eighteenth centuries, there has been tremendous technical progress and scientific advances in the knowledge of heat and mass transfer, where modeling and simulation developments are increasingly contributing to the current state of the art. Heat and Mass Transfer - Advances in Science and Technology Applications aims at providing researchers and practitioners with a valuable compendium of significant advances in the field.