DRASTIC

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Publisher :
ISBN 13 :
Total Pages : 622 pages
Book Rating : 4.:/5 (168 download)

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Book Synopsis DRASTIC by :

Download or read book DRASTIC written by and published by . This book was released on 1987 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Water Resources Systems

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Publisher :
ISBN 13 : 9781901502329
Total Pages : 380 pages
Book Rating : 4.5/5 (23 download)

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Book Synopsis Water Resources Systems by : Günter Blöschl

Download or read book Water Resources Systems written by Günter Blöschl and published by . This book was released on 2003 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Food Engineering Practice

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Publisher : CRC Press
ISBN 13 : 9781420049077
Total Pages : 732 pages
Book Rating : 4.0/5 (49 download)

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Book Synopsis Handbook of Food Engineering Practice by : Kenneth J. Valentas

Download or read book Handbook of Food Engineering Practice written by Kenneth J. Valentas and published by CRC Press. This book was released on 1997-07-23 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food engineering has become increasingly important in the food industry over the years, as food engineers play a key role in developing new food products and improved manufacturing processes. While other textbooks have covered some aspects of this emerging field, this is the first applications-oriented handbook to cover food engineering processes and manufacturing techniques. A major portion of Handbook of Food Engineering Practice is devoted to defining and explaining essential food operations such as pumping systems, food preservation, and sterilization, as well as freezing and drying. Membranes and evaporator systems and packaging materials and their properties are examined as well. The handbook provides information on how to design accelerated storage studies and determine the temperature tolerance of foods, both of which are important in predicting shelf life. The book also examines the importance of physical and rheological properties of foods, with a special look at the rheology of dough and the design of processing systems for the manufacture of dough. The final third of the book provides useful supporting material that applies to all of the previously discussed unit operations, including cost/profit analysis methods, simulation procedures, sanitary guidelines, and process controller design. The book also includes a survey of food chemistry, a critical area of science for food engineers.

Free Spaces

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Publisher : HarperCollins Publishers
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.:/5 (321 download)

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Book Synopsis Free Spaces by : Sara Margaret Evans

Download or read book Free Spaces written by Sara Margaret Evans and published by HarperCollins Publishers. This book was released on 1986 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: What are the environments, the public spaces, in which ordinary people become participants in the complex, ambiguous, engaging conversation about democracy: participators in governance rather than spectators or complainers, victims or accomplices? What are the roots, not simply of movements against oppression, but also of those democratic social movements which both enlarge the opportunities for participation and enhance people's ability to participate in the public world? In Free Spaces, Sara M. Evans and Harry C. Boyte argue for a new understanding of the foundations for democratic politics by analyzing the settings in which people learn to participate in democracy. In their new Introduction, the authors link the concept of free spaces to recent theoretical discussions about community, public life, civil society, and social movements.

Polymer Permeability

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Publisher : Springer Science & Business Media
ISBN 13 : 9400948581
Total Pages : 387 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Polymer Permeability by : J. Comyn

Download or read book Polymer Permeability written by J. Comyn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are permeable, whilst ceramics, glasses and metals are gener ally impermeable. This may seem a disadvantage in that polymeric containers may allow loss or contamination of their contents and aggressive substances such as water will diffuse into polymeric struc tures such as adhesive joints or fibre-reinforced composites and cause weakening. However, in some cases permeability is an advantage, and one particular area where this is so is in the use of polymers in drug delivery systems. Also, without permeable polymers, we would not enjoy the wide range of dyed fabrics used in clothing and furnishing. The fundamental reason for the permeability of polymers is their relatively high level of molecular motion, a factor which also leads to their high levels of creep in comparison with ceramics, glasses and metals. The aim of this volume is to examine some timely applied aspects of polymer permeability. In the first chapter basic issues in the mathema tics of diffusion are introduced, and this is followed by two chapters where the fundamental aspects of diffusion in polymers are presented. The following chapters, then, each examine some area of applied science where permeability is a key issue. Each chapter is reasonably self-contained and intended to be informative without frequent outside reference. This inevitably leads to some repetition, but it is hoped that this is not excessive.

Trends in Food Engineering

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Publisher : CRC Press
ISBN 13 : 9781566769914
Total Pages : 376 pages
Book Rating : 4.7/5 (699 download)

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Book Synopsis Trends in Food Engineering by : Jorge E. Lozano

Download or read book Trends in Food Engineering written by Jorge E. Lozano and published by CRC Press. This book was released on 2000-06-07 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trends in Food Engineering presents a wide vision of food engineering, with an emphasis on topics vital to the food industry today. The first section deals with physical and sensory properties of food. The emphasis in these chapters is on structure-function relationships, food rheology, and the correlations between physicochemical and sensory data. The second section, on advances in food processing, includes recent developments in minimal preservation and thermal and nonthermal processing of foods. The book concludes with current topics in food engineering, including applied biotechnology, food additives, and functional properties of proteins.

Issues & Options

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Publisher : UN
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Issues & Options by : José Goldemberg

Download or read book Issues & Options written by José Goldemberg and published by UN. This book was released on 1998 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Thermoeconomic Optimization of Solar Polygeneration Plants for Producing Electricity, Desalted Water, Cooling, and Process Heat

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (145 download)

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Book Synopsis Thermoeconomic Optimization of Solar Polygeneration Plants for Producing Electricity, Desalted Water, Cooling, and Process Heat by : Roberto Eduardo Leiva Illanes

Download or read book Thermoeconomic Optimization of Solar Polygeneration Plants for Producing Electricity, Desalted Water, Cooling, and Process Heat written by Roberto Eduardo Leiva Illanes and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Esta investigación se centra en la evaluación termoeconómica para la producción conjunta de electricidad, agua, refrigeración, y calor de proceso en plantas de poligeneración solar, con el fin de crear una base de conocimiento científico para el desarrollo de tecnologías de plantas de potencia de concentración solar (CSP) en zonas con altas condiciones de irradiación solar, y el uso racional y óptimo de recursos en esquemas de poligeneración para aumentar la eficiencia global de conversión de energía del sistema, y minimizar los costos de los productos finales. El objetivo principal de esta disertación es modelar, evaluar y optimizar plantas de poligeneración solar, configuradas con una planta CSP con un campo de colectores solares cilindro parabólico, almacenamiento térmico de energía y un sistema de respaldo, un módulo de destilación multi-efectos (MED), un módulo de refrigeración de absorción de simple efecto (REF), y un módulo de calor de proceso (PH), donde el motor impulsor es la planta CSP, considerando que las plantas de poligeneración se localiza en una zona con altas condiciones de irradiación solar y de demanda de energía y agua. Las plantas de poligeneración solar se simulan en un régimen transitorio, en una ubicación representativa con altas condiciones de irradiación solar, como en el norte de Chile. En el desarrollo de esta disertación se utilizaron los programas IPSEpro, Microsoft Excel, MATLAB, EES, y el módulo ExIO como complemento de Microsoft Excel. Para ampliar el análisis termoeconómico en la evaluación de esquemas de poligeneración solar, la metodología incluye el uso de dos métodos termoeconómicos; el primero, basado en el método de costo de exergía, se utilizó para evaluar el costo real de cada producto, en el análisis de sensibilidad del costo de inversión, costo de combustible y de la demanda, y para evaluar los efectos del tamaño del campo solar y el dimensionamiento del almacenamiento de energía térmica. Se investigaron tres configuraciones: dos esquemas de poligeneración y uno de sistemas independientes. Además, se comparó con el método de costo nivelado en términos de asignación de costos y del costo especifico unitario de cada producto. Mientras que el segundo método, basado en el método de exergoeconomía simbólica, se utilizó para analizar en profundidad el proceso de formación de costos de exergía, comparándolo con sistemas independientes, y para establecer la mejor configuración en cogeneración, trigeneración y poligeneración. En el cual, se investigaron veintiún configuraciones: ocho de cogeneración, ocho de trigeneración, cuatro esquemas de poligeneración, y uno de sistemas independientes. Esta disertación fue desarrollada a través de tres artículos científicos. Este estudio revela que una planta de poligeneración solar es más eficiente y rentable que las plantas independientes para una zona con altas condiciones de irradiación solar y proximidad a centros de consumo, como las industrias mineras, que requieren operación continua y suministro de energía y agua con una demanda fundamentalmente constante. Además, de acuerdo con el mercado del norte de Chile, las configuraciones de poligeneración solar son competitivas en cuanto a la producción de electricidad, agua dulce, refrigeración y producción de calor. A su vez, las plantas de poligeneración solar podrían aumentar el beneficio económico vendiendo créditos de carbono y créditos de cuotas de energía renovable basados en el Protocolo de Kyoto y la legislación chilena, respectivamente. También revela que el método termoeconómico es un método de asignación de costos equitativo y racional que es adecuado para ser aplicado en una planta de poligeneración solar. Otro resultado es que este método se recomienda cuando se necesita un análisis más preciso para evaluar los costos de los diferentes productos y para evaluar los beneficios de una planta de poligeneración, en comparación con las plantas independientes. Por otro lado, el método de costo nivelado es un método simple y rápido, y no se requiere un profundo conocimiento de termodinámica, siendo recomendable cuando es necesario realizar un primer acercamiento de los costos de cada producto. Otro resultado importante es que los equipos claves en los cuales el diseño debería ser mejorado en las plantas de multi-generación solar son: colectores solares, subsistemas productivos (plantas MED, REF, y PH), evaporador, y recalentador. También, las configuraciones recomendadas en las plantas de multi-generación solar (cogeneración, trigeneración, y poligeneración) son aquellas en las cuales la planta MED reemplaza al condensador, y la planta REF, así como el módulo PH, se acoplan a las extracciones de turbina. Los resultados obtenidos brindan información útil para señalar el potencial que ofrece la poligeneración solar y podría constituir una guía para comprender estos métodos.