Angebote zu "Time" (12 Treffer)

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Potential, System Analysis and Preliminary Desi...
39,00 € *
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The industrial sector is very promising for the use of solar thermal technology, since it accounts for a large share of the total final energy consumption (e.g. 27 % in Germany in 2010) and it predominantly uses the consumed energy as thermal energy (74 % in Germany in 2010). In order to develop this area of application, it is necessary to understand which industrial sectors have the highest potential, which processes within these sectors are most suitable for the integration of solar heat as well as to quantify the possible contribution to the industrial heat demand. For this thesis, the industrial heat consumption in Germany is analyzed, which leads to the selection of the 11 most promising sectors within industry. These are Chemicals, Food and beverages, Motor vehicles, Paper, Fabricated metal, Machinery and equipment, Rubber and plastic, Electrical equipment, Textiles, Printing and Wood. The theoretical potential of solar heat for industrial processes below 300 °C in Germany adds up to 134 TWh per year, the technical potential (considering efficiency measures, limited roof area and a solar fraction) being 16 TWh per year or 3.4 % of the overall industrial heat demand.Solar thermal systems can achieve higher system yields in industrial applications compared to domestic ones. At the same time, systems can be more complex in industrial applications. In order to design and operate solar process heat systems efficiently and to exploit the large potential, possible faults of such systems and their impact have to be evaluated. In this thesis, an implemented solar process heat system is methodically analyzed based on measurements and simulations with a validated model. Several faults are identified and their influence, as well as the influence of a reduced load on the system yield is evaluated. The analysis shows that a reduced load is most influential. Further, the most important impact factors on the system performance are identified: the collector parameters (?0, a1) and load characteristics (mass flow, temperature). The design of solar process heat systems is in many cases very demanding, hence costly. This high effort is a major barrier for a further development of solar heat for industrial applications. The decision to install solar thermal systems is in most cases based on solar heat generation cost. Collector field and heat store size are the most important figures for the estimation of the overall cost of a solar thermal system. Therefore, a simple approach for dimensioning the collector field and heat store is developed in this thesis in order to enable manufacturers and planners on one hand and costumers on the other hand to make a decision in favor or against a solar process heat system. In addition to investment cost, the specific system yield, which is determined for selected process heat applications in this thesis, is necessary to calculate solar heat generation cost. Finally, indications on the necessary accuracy of the load profile are provided to help to reduce effort in the design phase.

Anbieter: Dodax
Stand: 25.02.2020
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Chemistry For Textile Students; A Manual Suitab...
64,90 CHF *
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Chemistry For Textile Students; A Manual Suitable For Technical Students In The Textile And Dyeing Industries, By NORMAN BLAND. PREFACE. The present time, being one of reconstruction, is an opportune moment for the presentation of this work, as it is, we believe, the first attempt to put forward a fairly compIetecourse on Chemistry for Textile Students suitable for the large and growing number of students who are taking up the technical study d textile industries from the truly scientific standpoint. It is a noteworthy feature of the last Census of Production, published in 1907, that, if we omit coal mining, whilst the cotton and woollen industries occupy respectively the first and fourth positions among the nine leading industries of the country as regards number of people employed, yet these industrics employ a smaller percentage of well-trained technologists than any of the others. With one exception, the productivity, or net putput in value per head of persons empIoyed, is less in the case of textile industries, apart from chemistry and dyeing, than that of the other great industries of the country, and this is no doubt largely due to the small percentage of well-trained technologists employed. Apart from the branches of bleaching and dyeing, it is only in very recent years that it has been realised, and only then by the most enlightened employers, that chemistry and physics play a most important part in the various operations used in the production of yarns and finished pieces. Recently, however, it has been recognised that Germany, in pre-W-ar times, Pas getting far ahead of us, principally through the,direct application of the sciences of chemistry, physics, and engineering to the procksses of nlanufactue of textiles. Iarge manufacturers are now beginning to realise that specially trained textile-chemists and textile-engineers must be engaged for special research work, if progress is to be made which wi1l enable us to keep pace with the competition of other great natons of the world. Germany was setting the pace in prewar times, nvhilst our manufacturers were resting largeIy on the laurels of the past, with the result that certain branches of our great textile industry were fast passing to the continent but in the near future other great nations of the world will have profited by the experience of Germany, and, if we are to maintain the traditions of the past, me must bring the sciences of chemistry and physics to bear to a greater degree on the study of textiles. It is a necessary part of the training of the textile technologist, who will late be engaged in the production of yarns and finished articles, that he should have received a thorough grounding in the sciences of chemistry and physics.

Anbieter: Orell Fuessli CH
Stand: 25.02.2020
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Industrial Enzymes
441,00 CHF *
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A comprehensive, accessible, up-to-date catalog of enzymes and their uses in modern manufacturing. Enzymes have long been used by industrial product makers as major catalysts to transform raw materials into end products. Now available in English for the first time, Industrial Enzymes and Their Applications is the only authoritative catalog of enzymes with in-depth coverage of their varied uses, the classes in which they are grouped, and which chemical reagents they have replaced on current mass production lines. The first section surveys general enzyme characteristics and discusses their microbiological origin, including pH and temperature dependence of the activity and stability of each enzyme. The next section then examines the most important industrial enzymes in use today— including carbohydrate-hydrolyz-ing enzymes, proteases, ester cleavage-fat-hydrolyzing enzymes, and immobilized enzymes. The last section is devoted to specific applications of technical enzymes in such areas as food processing, beverage production, animal nutrition, leather, and textiles. Industrial Enzymes and Their Applications offers instant access to a wealth of key enzyme data— an invaluable, wide-ranging resource for industrial chemists, biochemists, biochemical engineers, and students.

Anbieter: Orell Fuessli CH
Stand: 25.02.2020
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International Design Yearbook 16
118,00 CHF *
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Covering five major areas of domestic design, International Design Yearbook 16 devotes separate chapters to furniture, lighting, tableware, textiles, and products created over the past 18 months by both well-known designers and new names from around the world. This year's selection has been made by internationally acclaimed architect and lighting designer Michele De Lucchi. As fresh as the millennium itself, the annual presents futuristic technological ideas, such as Ron Arad's computer-animated vases, as well as reinventions of time-honored objects, like Sir Norman Foster's light design for Artemide. This who's who of domestic design includes the vibrant, modern talent of Emmanuel Babled, Jonathan Ives, and Ettore Sottsass, and design teams from Philips, Sharp, and Siemens. The objects are lavishly illustrated, and full technical data is given for each. A comprehensive reference section provides biographies of the designers, a list of suppliers and their addresses, and an updated list of design acquisitions at major international museums.

Anbieter: Orell Fuessli CH
Stand: 25.02.2020
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Analytical Techniques in Materials Conservation
240,00 CHF *
ggf. zzgl. Versand

The use of scientific techniques in materials conservation has expanded considerably in recent decades and there is a great deal of interest in identifying the materials used in culturally important objects. Of importance is a clear understanding of the state and mechanisms of degradation of objects. Of importance is a clear understanding of the state and mechanisms of degradation of objects susceptible to deterioration with time and exposure to environmental factors. In addition, awareness of the state of materials at a molecular level can provide valuable information for conservators, enabling them to decide on a conservation procedure. This book presents the extensive range of analytical techniques used by scientists that may be applied to heritage materials such as paintings, metals, sculptures, written material, natural materials, synthetic polymers, textiles, tone, ceramics and glass. An introductory chapter describes the types and chemistry of materials encountered in conservation. Chapters 2 to 10 provide a straightforward background to each of the common analytical techniques: * Basic identification techniques * Light examination and microscopy * Molecular spectroscopy * Atomic spectroscopy * X-ray techniques * Mass spectrometry * Chromatography and electrophoresis * Thermal and mechanical analysis * Nuclear methods An explanation of how an instrument works is provided without the excessive technical detail that can be overwhelming for the first-time user. The nature and size of a sample required for each technique is given as this is an important consideration in conservation. Additionally, for each technique, examples of the application of the method to specific types of heritage materials are provided, with the relevant literature references. This book will be a useful source of information for those with an interest in materials conservation. While it should prove an aid to those already working in this field, the book is also aimed at those entering the field who would like to know more about the analysis of heritage materials. An in-depth knowledge of chemistry, materials science or analytical chemistry is no assumed, so those without a strong background in these fields will be able to understand the scientific concepts presented.

Anbieter: Orell Fuessli CH
Stand: 25.02.2020
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Ambient Intelligence
233,90 CHF *
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Ambient intelligence is the vision of a technology that will become invisibly embedded in our natural surroundings, present whenever we need it, enabled by simple and effortless interactions, attuned to all our senses, adaptive to users and context-sensitive, and autonomous. High-quality information access and personalized content must be available to everybody, anywhere, and at any time. This book addresses ambient intelligence used to support human contacts and accompany an individual's path through the complicated modern world. From the technical standpoint, distributed electronic intelligence is addressed as hardware vanishing into the background. Devices used for ambient intelligence are small, low-power, low weight, and (very importantly) low-cost; they collaborate or interact with each other; and they are redundant and error-tolerant. This means that the failure of one device will not cause failure of the whole system. Since wired connections often do not exist, radio methods will play an important role for data transfer. This book addresses various aspects of ambient intelligence, from applications that are imminent since they use essentially existing technologies, to ambitious ideas whose realization is still far away, due to major unsolved technical challenges. TOC:Introduction.- I. Applications: Social, Economic, and Ethical Implications of Ambient Intelligence and Ubiquitous Computing.- Integrated Microelectronics for Smart Textiles.- Ambient Intelligence Research in HomeLab.- How Ambient Intelligence will Improve Habitability and Energy Efficiency in Buildings.- II. System Design and Architecture: Networked Infomechanical Systems.- TinyOS: An Operating System for Sensor Networks.- A Service Based Universal Application Interface for ad hoc Wireless Sensor Networks.- Locationing and Time Synchronization Services in Ambient Intelligence Networks.- Security for Ambient Intelligence Systems.- Low-Cost Wireless Control Networks in Smart Environments.- III. Components and Technologies: Ambient Intelligence Technologies: An Overview.- Ultra-Low Power Integrated Wireless Nodes for Ambient Intelligence Networks.- Packaging Challenges in Miniaturization.- Algorithms in Ambient Intelligence.

Anbieter: Orell Fuessli CH
Stand: 25.02.2020
Zum Angebot
Industrial Enzymes
268,99 € *
ggf. zzgl. Versand

A comprehensive, accessible, up-to-date catalog of enzymes and their uses in modern manufacturing. Enzymes have long been used by industrial product makers as major catalysts to transform raw materials into end products. Now available in English for the first time, Industrial Enzymes and Their Applications is the only authoritative catalog of enzymes with in-depth coverage of their varied uses, the classes in which they are grouped, and which chemical reagents they have replaced on current mass production lines. The first section surveys general enzyme characteristics and discusses their microbiological origin, including pH and temperature dependence of the activity and stability of each enzyme. The next section then examines the most important industrial enzymes in use today— including carbohydrate-hydrolyz-ing enzymes, proteases, ester cleavage-fat-hydrolyzing enzymes, and immobilized enzymes. The last section is devoted to specific applications of technical enzymes in such areas as food processing, beverage production, animal nutrition, leather, and textiles. Industrial Enzymes and Their Applications offers instant access to a wealth of key enzyme data— an invaluable, wide-ranging resource for industrial chemists, biochemists, biochemical engineers, and students.

Anbieter: Thalia AT
Stand: 25.02.2020
Zum Angebot
Chemistry For Textile Students; A Manual Suitab...
35,99 € *
ggf. zzgl. Versand

Chemistry For Textile Students; A Manual Suitable For Technical Students In The Textile And Dyeing Industries, By NORMAN BLAND. PREFACE. The present time, being one of reconstruction, is an opportune moment for the presentation of this work, as it is, we believe, the first attempt to put forward a fairly compIetecourse on Chemistry for Textile Students suitable for the large and growing number of students who are taking up the technical study d textile industries from the truly scientific standpoint. It is a noteworthy feature of the last Census of Production, published in 1907, that, if we omit coal mining, whilst the cotton and woollen industries occupy respectively the first and fourth positions among the nine leading industries of the country as regards number of people employed, yet these industrics employ a smaller percentage of well-trained technologists than any of the others. With one exception, the productivity, or net putput in value per head of persons empIoyed, is less in the case of textile industries, apart from chemistry and dyeing, than that of the other great industries of the country, and this is no doubt largely due to the small percentage of well-trained technologists employed. Apart from the branches of bleaching and dyeing, it is only in very recent years that it has been realised, and only then by the most enlightened employers, that chemistry and physics play a most important part in the various operations used in the production of yarns and finished pieces. Recently, however, it has been recognised that Germany, in pre-W-ar times, Pas getting far ahead of us, principally through the,direct application of the sciences of chemistry, physics, and engineering to the procksses of nlanufactue of textiles. Iarge manufacturers are now beginning to realise that specially trained textile-chemists and textile-engineers must be engaged for special research work, if progress is to be made which wi1l enable us to keep pace with the competition of other great natons of the world. Germany was setting the pace in prewar times, nvhilst our manufacturers were resting largeIy on the laurels of the past, with the result that certain branches of our great textile industry were fast passing to the continent but in the near future other great nations of the world will have profited by the experience of Germany, and, if we are to maintain the traditions of the past, me must bring the sciences of chemistry and physics to bear to a greater degree on the study of textiles. It is a necessary part of the training of the textile technologist, who will late be engaged in the production of yarns and finished articles, that he should have received a thorough grounding in the sciences of chemistry and physics.

Anbieter: Thalia AT
Stand: 25.02.2020
Zum Angebot
Analytical Techniques in Materials Conservation
221,99 € *
ggf. zzgl. Versand

The use of scientific techniques in materials conservation has expanded considerably in recent decades and there is a great deal of interest in identifying the materials used in culturally important objects. Of importance is a clear understanding of the state and mechanisms of degradation of objects. Of importance is a clear understanding of the state and mechanisms of degradation of objects susceptible to deterioration with time and exposure to environmental factors. In addition, awareness of the state of materials at a molecular level can provide valuable information for conservators, enabling them to decide on a conservation procedure. This book presents the extensive range of analytical techniques used by scientists that may be applied to heritage materials such as paintings, metals, sculptures, written material, natural materials, synthetic polymers, textiles, tone, ceramics and glass. An introductory chapter describes the types and chemistry of materials encountered in conservation. Chapters 2 to 10 provide a straightforward background to each of the common analytical techniques: * Basic identification techniques * Light examination and microscopy * Molecular spectroscopy * Atomic spectroscopy * X-ray techniques * Mass spectrometry * Chromatography and electrophoresis * Thermal and mechanical analysis * Nuclear methods An explanation of how an instrument works is provided without the excessive technical detail that can be overwhelming for the first-time user. The nature and size of a sample required for each technique is given as this is an important consideration in conservation. Additionally, for each technique, examples of the application of the method to specific types of heritage materials are provided, with the relevant literature references. This book will be a useful source of information for those with an interest in materials conservation. While it should prove an aid to those already working in this field, the book is also aimed at those entering the field who would like to know more about the analysis of heritage materials. An in-depth knowledge of chemistry, materials science or analytical chemistry is no assumed, so those without a strong background in these fields will be able to understand the scientific concepts presented.

Anbieter: Thalia AT
Stand: 25.02.2020
Zum Angebot