Particle-to-gas Heat Transfer in Fluidized Beds PDF Download

Author: A. C. Juveland
Publisher:
ISBN:
Category : Fluidized reactors
Languages : en
Pages : 34

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Author: O. Molerus
Publisher: Springer Science & Business Media
ISBN: 9401158428
Category : Technology & Engineering
Languages : en
Pages : 205

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Book Description
This book provides a much needed and thorough treatment of the heat transfer in agitated disperse systems. It gives predictive equations for the heat transfer in moving beds, bubbling and circulating fluidized beds, pneumatic transport in vertical tubes and particulate fluidized beds. Owing to the many different modes of activation of heat transfer, the basic approach of the book is to provide experimental evidence of the relevance of particle motion to the proximity of solid surfaces for the heat transfer observed. This has been achieved by the evaluation of experiments obtained with a newly developed pulsed light method using luminous particles. Heat Transfer in Fluidized Beds will be of great use to students and researchers involved in heat transfer and thermodynamics.

Author: J. S. M. Botterill
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 314

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Book Description

Author: D. Kunii
Publisher: Elsevier
ISBN: 008050664X
Category : Science
Languages : en
Pages : 520

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Book Description
Fluidization Engineering, Second Edition, expands on its original scope to encompass these new areas and introduces reactor models specifically for these contacting regimes. Completely revised and updated, it is essentially a new book. Its aim is to distill from the thousands of studies those particular developments that are pertinent for the engineer concerned with predictive methods, for the designer, and for the user and potential user of fluidized beds. Covers the recent advances in the field of fluidization. Presents the studies of developments necessary to the engineers, designers, and users of fluidized beds.

Author: Donald Edward Orgen
Publisher:
ISBN:
Category : Fluidization
Languages : en
Pages : 128

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Book Description

Author: John R. Grace
Publisher: John Wiley & Sons
ISBN: 3527340645
Category : Technology & Engineering
Languages : en
Pages : 626

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Book Description
A concise and clear treatment of the fundamentals of fluidization, with a view to its applications in the process and energy industries.

Author: Welcome Willard Wamsley
Publisher:
ISBN:
Category : Fluidization
Languages : en
Pages : 180

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Book Description
Gas-solid heat transfer in fluidized beds was investigated by the transient heating of cold particles in a hot gas stream. Transfer coefficients obtained from the rate of recovery of the gas temperature during the unsteady state heating of the particles are a measure of the overall performance of the fluidized bed. The results are interpreted in terms of the gas flow characteristics observed. It is shown that gas-fluidized beds cannot be considered equivalent to a uniformly expanded fixed bed, but that a portion of the entry gas must be regarded as effectively by-passing the solid material present. Using air and carbon dioxide as the fluidizing gases and glass spheres, resin spheres, and crushed alumina as solids, the results obtained range from 0.07 BTU/hr-sq,ft, - °F. for 100/115 mesh particles to 0.9 BTU/hr-sq.ft. - °F. for 16/20 mesh particles but show no consistent influence of mass velocity. These coefficients are less than those previously reported for fixed beds, isolated particles, or fluidized beds. They are in agreement with reinterpreted results for the steady-state evaporation of water from a fluidized solid.

Author: Sergeĭ Stepanovich Zabrodskiĭ
Publisher: MIT Press (MA)
ISBN:
Category : Fluidization
Languages : en
Pages : 426

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Author: J.R. Grace
Publisher: Springer Science & Business Media
ISBN: 9400900953
Category : Science
Languages : en
Pages : 599

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Book Description
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.

Author: Sadik Kakaç
Publisher: Springer Science & Business Media
ISBN: 9400927908
Category : Technology & Engineering
Languages : en
Pages : 1090

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Book Description
Two-phase flow heat exchangers are vital components of systems for power generation, chemical processing, and thermal environment control. The art and science of the design of such heat exchangers have advanced considerably in recent years. This is due to better understanding of the fundamentals of two-phase flow and heat transfer in simple geometries, greater appreciation of these processes in complex goemetries, and enhanced predictive capability through use of complex computer codes. The subject is clearly of great fundamental and practical importance. The NATO ASIan Thermal-Hydraulic Fundamentals and Design of Two-Phase Flow Heat Exchangers was held in Povoa de Varzim (near Porto), Portugal, July 6-17, 1987. participating in the organization of" the ASI were the Department of Mechanical Engineering and the Clean Energy Research Institute, University of Miami; Universidade do Porto; and the Department of Mechanical Engineering, Aeronautical Eng ineer ing, and Mechanics, Rensselaer Polytechnic Institute. The ASI was arranged primarily as a high-level teaching activity by experts representing both academic and industrial viewpoints. The program included the presentation of invited lectures, a limited number of related technical papers and discussion sessions.