Описание: The first part of Screw Compressors gives a review of recent developments in screw compressor design. The second part presents a generalized mathematical definition of screw machine rotors and describes some well known lobe shapes in detail. The third part treats the mathematical modelling of the thermodynamics and fluid mechanics of compression and expansion processes. This includes discussion of the issues addressed in order to be able to predict the optimum rotor size and speed and built-in volume ratio and, in the case of oil flooded machines, the injection position and jet diameter. The fourth and fifth parts discuss the principles used and describe the application of the analytical procedures and rotor profiling techniques, presented in the earlier chapters, to the design of a number of twin screw compressors, currently manufactured including the examples of combining expansion and compression in the same machine.
Описание: This book - the authors' second book on screw compressors – presents the results of the most up to date methods of three-dimensional modeling of the fluid dymanics and the solid-fluid interaction within these machines, which are still being developed. By including them in the design process, it is possible, not only to predict flow patterns more accurately, and hence improve the design of the critical components, but also to determine how the pressure and temperature distribution within the compressor distorts the rotors and casing and how this, in turn, has an interactive effect on the performance.Such calculating facilities are especially valuable for oil free machines, in which temperature changes are much larger and thus make thermal distortion effects more significant. However, it confers advantages in all cases, as improved machine tools enable manufacturing tolerances to be reduced and hence compressors can be built with smaller clearances. Four examples outline the scope of the applied mathematical model for three dimensional calculation of fluid flow and stresses in the solid parts of the screw machine.
Автор: Nishchal K. Verma; Al Salour Название: Intelligent Condition Based Monitoring ISBN: 981150511X ISBN-13(EAN): 9789811505119 Издательство: Springer Рейтинг: Цена: 23757.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book discusses condition based monitoring of rotating machines using intelligent adaptive systems. The adaptive fault diagnostics systems presented can be used in multiple time and safety critical applications in domains such as aerospace, automotive, deep earth and deep water exploration, and energy.
Автор: Van den Braembussche Rene Название: Design and Analysis of Centrifugal Compressors ISBN: 1119424097 ISBN-13(EAN): 9781119424093 Издательство: Wiley Рейтинг: Цена: 17416.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
A comprehensive overview of fluid dynamic models and experimental results that can help solve problems in centrifugal compressors and modern techniques for a more efficient aerodynamic design.
Design and Analysis of Centrifugal Compressors isacomprehensive overview of the theoretical fluid dynamic models describing the flow in centrifugal compressors and the modern techniques for the design of more efficient centrifugal compressors. The author -- a noted expert in the field, with over 40 years of experience -- evaluates relevant numerical and analytical prediction models for centrifugal compressors with special attention to their accuracy and limitations. Relevant knowledge from the last century is linked with new insights obtained from modern CFD. Emphasis is to link the flow structure, performance and stability to the geometry of the different compressor components.
Design and Analysis of Centrifugal Compressors is an accessible resource that combines theory with experimental data and previous research with recent developments in computational design and optimization. This important resource
Covers the basic information concerning fluid dynamics that are specific for centrifugal compressors and clarifies the differences with axial compressors
Provides an overview of performance prediction models previously developed in combination with extra results from research conducted by the author
Describes helpful numerical and analytical models for the flow in the different components in relation to flow stability, operating range and performance
Includes the fundamental information for the aerodynamic design of more efficient centrifugal compressors
Explains the use of computational fluid dynamics (CFD) for the design and analysis of centrifugal compressors
Written for engineers, researchers and designers in industry as well as for academics specializing in the field, Design and Analysis of Centrifugal Compressors offers an up to date overview of the information needed for the design of more effective centrifugal compressors.
Автор: Watterson James M. Название: A Simple Guide to Understanding Compressors ISBN: 1947083708 ISBN-13(EAN): 9781947083707 Издательство: Mare Nostrum (Eurospan) Рейтинг: Цена: 6269.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Compressors are mechanical devices that reduce the volume of a fluid, usually a gas, by increasing the pressure in a confined space. They are ubiquitous in industry and commercial operations large and small. Yet their mechanisms, proper operation, and proper maintenance are not always well understood by operators and technicians--or even engineers--that rely on them for industrial operations. This straightforward guide seeks to unveil a lot of myths surrounding compressors, including all the major types of compressors---especially the most trouble-prone type, reciprocating compressors. Having a compressor with minimal operating problems does not only depend on the selection of the right type and size for a given job; it also depends on correct specifications of all auxiliary equipment and operating conditions, as well as keeping constant vigilance over the engineering and compressor installation. This book offers that guidance in a clear and concise format.
Автор: Niu Название: Process Control for Pumps and Compressors ISBN: 3031431219 ISBN-13(EAN): 9783031431210 Издательство: Springer Рейтинг: Цена: 18167.00 р. Наличие на складе: Поставка под заказ.
Описание: This book provides a summary of the essential knowledge and working processes involved with control of rotating equipment including: * machine characteristics; * overall control strategies; * detailed design; and * best practices. Emphasis is placed on the role of pumps and compressors as part of the overall process flow rather than treating them in isolation as this tends to optimize energy efficiency. Readers are made aware of the critical roles of rotating equipment and are given a good understanding of their dynamic behaviors, including surge/choke. The author imparts the practical know-how and skills involved in the design and implementation of capacity and anti-surge control and safe-guarding logic. Furthermore, the book discusses real-time monitoring of solutions based on operational requirements, dynamic models for control of supply and demand, cause-and-effect relationships, the use of online and offline data, and collaboration with other engineering disciplines. The text facilitates support for the day-to-day operation of in-house open-platform compressor control applications, encouraging the growth of analytic skills in troubleshooting and fixing common problems; it also inculcates a basic understanding of the principles of third-party proprietary technologies and supports decision-making between in-house and third-party solutions. Process engineers working in the oil-and-gas, refining, petrochemical, and chemical industries who bear responsibility for designing control solutions involving pumps and compressors will find this book an invaluable source of practical advice. This book also helps engineers working on design and maintenance of rotating equipment to understand the perspectives and requirements of process control.
Автор: Klaus H. L?dtke Название: Process Centrifugal Compressors ISBN: 3642073301 ISBN-13(EAN): 9783642073304 Издательство: Springer Рейтинг: Цена: 20896.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Originating in the process compressor industry, this text primarily addresses: rotating equipment engineers, project engineers, engineering contractors, and compressor user companies in oil and gas field operations, natural gas processing, petroleum refining, petrochemical processing, industrial refrigeration, and chemical industries.
Автор: Nikola Stosic; Ian Smith; Ahmed Kovacevic Название: Screw Compressors ISBN: 3642063500 ISBN-13(EAN): 9783642063503 Издательство: Springer Рейтинг: Цена: 16977.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Althoughtheprinciplesofoperationofhelicalscrewmachines, ascompressors or expanders, have been well known for more than 100 years, it is only during the past 30 years that these machines have become widely used. The main reasons for the long period before they were adopted were their relatively poor e?ciency and the high cost of manufacturing their rotors. Two main developments led to a solution to these di?culties. The ?rst of these was the introduction of the asymmetric rotor pro?le in 1973. This reduced the bl- hole area, which was the main source of internal leakage by approximately 90%, and thereby raised the thermodynamic e?ciency of these machines, to roughly the same level as that of traditional reciprocating compressors. The second was the introduction of precise thread milling machine tools at - proximately the same time. This made it possible to manufacture items of complex shape, such as the rotors, both accurately and cheaply. From then on, as a result of their ever improving e?ciencies, high rel- bility and compact form, screw compressors have taken an increasing share of the compressor market, especially in the ?elds of compressed air production, and refrigeration and air conditioning, and today, a substantial proportion of compressors manufactured for industry are of this type. Despite, the now wide usage of screw compressors and the publication of many scienti?c papers on their development, only a handful of textbooks have been published to date, which give a rigorous exposition of the principles of their operation and none of these are in English
Автор: Soedel, Werner Название: Sound and Vibrations of Positive Displacement Compressors ISBN: 0849370493 ISBN-13(EAN): 9780849370496 Издательство: Taylor&Francis Рейтинг: Цена: 36749.00 р. Наличие на складе: Поставка под заказ.
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