Modelling and Simulation of Circulating Fluidized Bed Combustors

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ISBN 13 :
Total Pages : 260 pages
Book Rating : 4.:/5 (492 download)

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Book Synopsis Modelling and Simulation of Circulating Fluidized Bed Combustors by : Yulong Hua

Download or read book Modelling and Simulation of Circulating Fluidized Bed Combustors written by Yulong Hua and published by . This book was released on 2004 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation aims to develop an overall mathematical model of circulating fluidized bed (CFB) combustors on up-to-date theories and experimental data of previous research work.Since solid exhibits a wide particle size distribution in a CFB boiler, a hydrodynamic model based on the semi-empirical approach is developed to approximate the local particle size distribution in CFB. The core/annulus flow structure is applied to this model and the particles in the bed are discretized into several size groups. The model accounts for the disintegration and shrinking of coal particles during the combustion process of each group of particles. It shows that coarser particles are gathered near the walls and the average particle diameter decreases along the boiler height, and this trend is more significant in the splash region.A three-dimensional model is developed to predict the bed-to-wall radiative heat transfer coefficient in the upper dilute zone of CFB combustors. The radiative transfer equation is solved by the discrete ordinates method. The Mie scattering theory is applied to calculate the absorption and scattering efficiency factors of particles existing in CFB combustors. The model considers the influences of the particle properties (including particle size distribution, particle optical constants and solid composition) on the radiative heat transfer coefficient. Simulation results show that the particle properties have significant influences on the bed-to-wall radiative heat transfer coefficient in CFB combustors.A coal combustion model is developed combined to the hydrodynamic model and heat transfer model.

Dynamic Modeling for Simulation and Control of a Circulating Fluidized Bed Combustor

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ISBN 13 :
Total Pages : 396 pages
Book Rating : 4.:/5 (421 download)

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Book Synopsis Dynamic Modeling for Simulation and Control of a Circulating Fluidized Bed Combustor by : James Ridley Muir

Download or read book Dynamic Modeling for Simulation and Control of a Circulating Fluidized Bed Combustor written by James Ridley Muir and published by . This book was released on 1995 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the 20th International Conference on Fluidized Bed Combustion

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Publisher : Springer Science & Business Media
ISBN 13 : 3642026826
Total Pages : 1186 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Proceedings of the 20th International Conference on Fluidized Bed Combustion by : Guangxi Yue

Download or read book Proceedings of the 20th International Conference on Fluidized Bed Combustion written by Guangxi Yue and published by Springer Science & Business Media. This book was released on 2010-07-28 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 20th International Conference on Fluidized Bed Combustion (FBC) collect 9 plenary lectures and 175 peer-reviewed technical papers presented in the conference held in Xi'an China in May 18-21,2009. The conference was the 20th conference in a series, covering the latest fundamental research results, as well as the application experience from pilot plants, demonstrations and industrial units regarding to the FBC science and technology. It was co-hosted by Tsinghua University, Southeast University, Zhejiang University, China Electricity Council and Chinese Machinery Industry Federation. A particular feature of the proceedings is the balance between the papers submitted by experts from industry and the papers submitted by academic researchers, aiming to bring academic knowledge to application as well as to define new areas for research. The authors of the proceedings are the most active researchers, technology developers, experienced and representative facility operators and manufacturers. They presented the latest research results, state-of-the-art development and projects, and the useful experience. The proceedings are divided into following sections: • CFB Boiler Technology, Operation and Design • Fundamental Research on Fluidization and Fluidized Combustion • C02 Capture and Chemical Looping • Gasification • Modeling and Simulation on FBC Technology • Environments and Pollutant Control • Sustainable Fuels The proceedings can be served as idea references for researchers, engineers, academia and graduate students, plant operators, boiler manufacturers, component suppliers, and technical managers who work on FBC fundamental research, technology development and industrial application.

Three-dimensional Modeling of Circulating Fluidized Bed Combustion

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ISBN 13 : 9783826544804
Total Pages : 130 pages
Book Rating : 4.5/5 (448 download)

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Book Synopsis Three-dimensional Modeling of Circulating Fluidized Bed Combustion by : Thomas C. C. Knöbig

Download or read book Three-dimensional Modeling of Circulating Fluidized Bed Combustion written by Thomas C. C. Knöbig and published by . This book was released on 1998 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Simulation of Large-scale Circulating Fluidized Bed Combustors

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Publisher :
ISBN 13 : 9783832280642
Total Pages : 171 pages
Book Rating : 4.2/5 (86 download)

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Book Synopsis Simulation of Large-scale Circulating Fluidized Bed Combustors by : Reiner Wischnewski

Download or read book Simulation of Large-scale Circulating Fluidized Bed Combustors written by Reiner Wischnewski and published by . This book was released on 2009 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Circulating Fluidized Bed Boilers

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Publisher : Springer
ISBN 13 : 3319061739
Total Pages : 370 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Circulating Fluidized Bed Boilers by : Prabir Basu

Download or read book Circulating Fluidized Bed Boilers written by Prabir Basu and published by Springer. This book was released on 2015-04-07 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: · Explains operation and scientific fundamentals of circulating fluidized bed (CFB) boilers · Outlines practical issues in industrial use · Teaches how to optimize design for maximum reliability and efficiency · Discusses operating and maintenance issues and how to troubleshoot them This book provides practicing engineers and students with insight into the design and operation of circulating fluidized bed (CFB) boilers through a combination of theoretical concepts and practical experience. An emphasis on combustion, hydrodynamics, heat transfer, and material issues illustrates these concepts with numerous examples from actual operating plants. The relevance of design and feed-stock parameters to the operation of a CFB boiler are also examined, along with their impacts on designs of mechanical components, including cyclones, air distributor grids, and solid recycle systems. This versatile resource explains how fluidized bed equipment works and how the basic principles of thermodynamics and fluid mechanics influence design, while providing insight into planning new projects, troubleshooting existing equipment, and appreciating the capabilities and limitations of the process. From hydrodynamics to construction and maintenance, the author covers all of the essential information needed to understand, design, operate, and maintain a complete fluidized bed system. It is a must for clean coal technology as well as for biomass power generation.

Modeling of a Fluidized Bed Combustor with Immersed Tubes

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ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Modeling of a Fluidized Bed Combustor with Immersed Tubes by : S. C. Saxena

Download or read book Modeling of a Fluidized Bed Combustor with Immersed Tubes written by S. C. Saxena and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress is reported in the development of a mathematical model of a fluidized-bed combustor. The model will include coal combustion phenomena and will incorporate basic mass transport relationships, bubble mechanics, heat transfer and configuration effects. A cold model test bed will be designed, constructed and operated to generate data in support of the effort in developing the mathematical model. In particular, experiments will provide data concerning heat transfer effects of tubes and tube bundles in fluidized beds, bubble formation, dispersion etc. Experiments have been carried out to measure the total heat transfer coefficient between 12.7 mm diameter copper tubes with different surface roughness and glass beads of different sizes. The comparison of results for the rough and technically smooth tubes revealed that the heat transfer coefficient strongly depends on the ratio of pitch (P) to particle diameter anti d/sub p/). By the proper choice of this ratio, P/anti d/sub p/, the total maximum heat transfer coefficient could be increased by as much as 40% over the value for a smooth tube with the same outside diameter. However, if P/anti d/sub p/ ratio is less than unity, the maximum heat transfer coefficient for rough tube is smaller as compared to the smooth tube. The design of the two end plates of the fluidized bed for mounting tube bundles of varying configuration and pitches has been completed and is currently under fabrication in the departmental workshop.

Solid Fuels Combustion and Gasification

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Publisher : CRC Press
ISBN 13 : 9780203027295
Total Pages : 480 pages
Book Rating : 4.0/5 (272 download)

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Book Synopsis Solid Fuels Combustion and Gasification by : Marcio L. de Souza-Santos

Download or read book Solid Fuels Combustion and Gasification written by Marcio L. de Souza-Santos and published by CRC Press. This book was released on 2004-06-07 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between theory and application, this reference demonstrates the operational mechanisms, modeling, and simulation of equipment for the combustion and gasification of solid fuels. Solid Fuels Combustion and Gasification: Modeling, Simulation, and Equipment Operation clearly illustrates procedures to improve and optimize the de

Fast Fluidization

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Publisher : Academic Press
ISBN 13 : 0080565670
Total Pages : 453 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Fast Fluidization by :

Download or read book Fast Fluidization written by and published by Academic Press. This book was released on 1994-12-23 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decade, circulating fluidization or fast fluidization has developed rapidly, superseding standard bubbling fluidization in many applications; for example, fast fluidization provides a better means forcontrolling emissions from the combustion of high-sulfur fuels and excels when used in boilers in steam plant and power stations. China initiated the study of fast fluidization in the early 1970s. Focusing on the substantial research cultivated in that country, with Kwauk at the leading edge, this latest volume in the Advances in Chemical Engineering Series is written in the context of the international state of the art and addresses some of the most vital issues surrounding this fluidization method."

Three-dimensional Simulation of Temperature Distributions in Large Scale Circulating Fluidized Bed Combustors

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ISBN 13 : 9783832282004
Total Pages : 166 pages
Book Rating : 4.2/5 (82 download)

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Book Synopsis Three-dimensional Simulation of Temperature Distributions in Large Scale Circulating Fluidized Bed Combustors by : Lars Ratschow

Download or read book Three-dimensional Simulation of Temperature Distributions in Large Scale Circulating Fluidized Bed Combustors written by Lars Ratschow and published by . This book was released on 2009 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mathematical Modelling of Circulating Fluidized Bed Combustion

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ISBN 13 : 9783888170027
Total Pages : 264 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Mathematical Modelling of Circulating Fluidized Bed Combustion by : Jens Paulus Hannes

Download or read book Mathematical Modelling of Circulating Fluidized Bed Combustion written by Jens Paulus Hannes and published by . This book was released on 1996 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modeling of a Fluidized Bed Combustor with Immersed Tubes

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Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Modeling of a Fluidized Bed Combustor with Immersed Tubes by : University of Illinois at Chicago Circle. Department of Energy Engineering

Download or read book Modeling of a Fluidized Bed Combustor with Immersed Tubes written by University of Illinois at Chicago Circle. Department of Energy Engineering and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Circulating Fluidized Beds

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Publisher : Springer Science & Business Media
ISBN 13 : 9400900953
Total Pages : 599 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Circulating Fluidized Beds by : J.R. Grace

Download or read book Circulating Fluidized Beds written by J.R. Grace and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the late 1970s there has been an explosion of industrial and academic interest in circulating fluidized beds. In part, the attention has arisen due to the environmental advantages associated with CFB (circulating . fluidized bed) combustion systems, the incorporation of riser reactors employing cir culating fluidized bed technology in petroleum refineries for fluid catalytic cracking and, to a lesser extent, the successes of CFB technology for calcina tion reactions and Fischer-Tropsch synthesis. In part, it was also the case that too much attention had been devoted to bubbling fluidized beds and it was time to move on to more complex and more advantageous regime,S of operation. Since 1980 a number of CFB processes have been commercialized. There have been five successful International Circulating Fluidized Bed Confer ences beginning in 1985, the most recent taking place in Beijing in May 1996. In addition, we have witnessed a host of other papers on CFB funda mentals and applications in journals and other archival publications. There have also been several review papers and books on specific CFB topics. However, there has been no comprehensive book reviewing the field and attempting to provide an overview of both fundamentals and applications. The purpose of this book is to fill this vacuum.

Predictive Models of Circulating Fluidized Bed Combustors

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (88 download)

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Book Synopsis Predictive Models of Circulating Fluidized Bed Combustors by :

Download or read book Predictive Models of Circulating Fluidized Bed Combustors written by and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Predictive Models for Circulating Fluidized Bed Combustors

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ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Predictive Models for Circulating Fluidized Bed Combustors by :

Download or read book Predictive Models for Circulating Fluidized Bed Combustors written by and published by . This book was released on 1989 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this investigation is to develop experimentally verified models for circulating fluidized bed (CFB) combustors. The purpose of these models is to help American industry, such as Combustion Engineering, design and scale-up CFB combustors that are capable of burning US Eastern high sulfur coals with low SO(subscript x) and NO(subscript x) emissions. In this report, presented as a technical paper, solids distributions and velocities were computed for a PYROFLOW circulating fluidized bed system. To illustrate the capability of the computer code an example of coal-pyrite separation is included, which was done earlier for a State of Illinois project. 24 refs., 20 figs., 2 tabs.

Solid Fuels Combustion and Gasification

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Publisher : CRC PressI Llc
ISBN 13 : 9781420047493
Total Pages : 486 pages
Book Rating : 4.0/5 (474 download)

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Book Synopsis Solid Fuels Combustion and Gasification by : Marcio L. De Souza-Santos

Download or read book Solid Fuels Combustion and Gasification written by Marcio L. De Souza-Santos and published by CRC PressI Llc. This book was released on 2010-03-16 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an increasing number of professionals and graduate students enter the field of solid-based power generation, they all require an command of process and equipment, as well as the theory behind it all. However, their informational needs and understanding differ based on their experience and the task at hand. Solid Fuels Combustion and Gasification: Modeling, Simulation, and Equipment Operations, Second Edition explores evolving solid fuel combustion and gasification techniques that are leading to much lower sulfur and nitrogen oxide emissions. It also shows how to increase the efficiency of processes dealing with materials such as coal, biomass, solid residues, etc. Many of the successes of these methods are the result of process optimization resulting from mathematical modeling and simulation. This book introduces and explores these techniques, taking a moderate approach that is neither too narrow nor too basic, making it useful to graduate students, engineers, and professionals. It illustrates the modeling and constructive and operational aspects of equipment used in combustion and gasification of solid fuels. It was written based on the idea that developing models and computer simulators is the optimal method to acquire real and testable understanding of a subject in the area of processing. Model complexity is extended only as far as needed to achieve a reasonable representation of the equipment described in the book, and the author provides specific and carefully selected case studies that: Cover many industrial processes involving combustion or gasification of solid fuels Provide easy-to-follow examples on how to set simplifying assumptions regarding the operation of real industrial equipment Enable relatively quick introduction of fundamental equations without the need for unnecessarily complex treatments The main strategy of the book is to teach by example, and the basic methods illustrated here can be used for modeling a wide range of processes and equipment commonly found in industry. It is a carefully constructed volume which presents essential concepts that minimize the need for other texts, and it can also be used as an introduction to more complex models.

Modeling and Simulation of Energy Systems

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Publisher : MDPI
ISBN 13 : 3039215183
Total Pages : 496 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Modeling and Simulation of Energy Systems by : Thomas A. Adams II

Download or read book Modeling and Simulation of Energy Systems written by Thomas A. Adams II and published by MDPI. This book was released on 2019-11-06 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy Systems Engineering is one of the most exciting and fastest growing fields in engineering. Modeling and simulation plays a key role in Energy Systems Engineering because it is the primary basis on which energy system design, control, optimization, and analysis are based. This book contains a specially curated collection of recent research articles on the modeling and simulation of energy systems written by top experts around the world from universities and research labs, such as Massachusetts Institute of Technology, Yale University, Norwegian University of Science and Technology, National Energy Technology Laboratory of the US Department of Energy, University of Technology Sydney, McMaster University, Queens University, Purdue University, the University of Connecticut, Technical University of Denmark, the University of Toronto, Technische Universität Berlin, Texas A&M, the University of Pennsylvania, and many more. The key research themes covered include energy systems design, control systems, flexible operations, operational strategies, and systems analysis. The addressed areas of application include electric power generation, refrigeration cycles, natural gas liquefaction, shale gas treatment, concentrated solar power, waste-to-energy systems, micro-gas turbines, carbon dioxide capture systems, energy storage, petroleum refinery unit operations, Brayton cycles, to name but a few.