Core heat transfer studies in a circulating fluidized bed
TL;DR: In this paper, experimental heat transfer studies have been conducted on a 0.6m high single vertical tube, 0.5-and 1.0m high finned U tube, located in the top 10% height of a 100 mm×100 mm crosssection and 5.5m tall CFB riser using silica sand of three mean sizes in the range of 143 to 363 μm as the bed material.
About: This article is published in Powder Technology.The article was published on 2002-04-08. It has received 19 citations till now. The article focuses on the topics: Convective heat transfer & Heat transfer coefficient.
Citations
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TL;DR: In this paper, heat transfer behavior in a circulating fluidized bed between the water membrane wall and bed inventory has been analyzed for Geldart B particles, and the average contribution of convective and radiative heat transfer components varied between 13.5-54% and 46-86.5%, respectively.
60 citations
TL;DR: In this paper, the authors reviewed the heat transfer process in different types of fluidized bed combustors as well as the important operating conditions affecting the process, and discussed the effect of operating parameters on the process.
44 citations
TL;DR: In this paper, a series of experiments was carried out in a commercial 300MW circulating fluidized bed (CFB) boiler with FBHE, where the parameters of steam, solids and air were measured at different boiler loads, based on which the absorbed heat and heat transfer coefficient were calculated.
38 citations
TL;DR: In this article, the influence of a bundle of intense vertical immersed tubes on the local heat transfer coefficients and related gas hydrodynamics of bubble frequency and gas holdup was conducted in a gas-solid fluidized bed of 0.14" inside diameter.
31 citations
TL;DR: In this paper, a heat transfer coefficient calculation model of platen heating surface at the flue gas side was established, which takes the effects of structure and dimension of heating surface, furnace temperature, steam temperature, heat transfer coefficients at the steam side, emissivity of tube wall and fluidization velocity etc.
29 citations
References
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01 Jan 1986
TL;DR: In this article, the authors present a unified approach to the practical understanding of the phenomena and mechanisms involved in gas fluidization, and include worked examples and design equations in the text to enable readers to make their own practical calculations, and there are also extensive up to date references at the end of each chapter.
Abstract: The technique of gas fluidization has a wide range of industrial applications for such processes as drying, combustion, and granulation. The intention here is to give the reader a clear overall picture of current practice, and to this end, all aspects of fluidized systems are covered. The contributors to this book have a unified approach to the practical understanding of the phenomena and mechanisms involved in gas fluidization. They have included worked examples and design equations in the text, to enable readers to make their own practical calculations, and there are also extensive up to date references at the end of each chapter. The contributors are all experts in the particular area of gas fluidization about which they have chosen to write, and are all internationally acclaimed authorities in the field. They have written with the practising engineer in mind, and the book will be essential reading for engineers of all disciplines who make use of gas fluidization technology. Students and researchers in the broader field of chemical engineering should also find topics of interest here.
765 citations
01 Jan 1991
TL;DR: In this article, the authors present an account of the'state-of-the-art' of different facets of this technology, including hydrodynamics, heat transfer, combustion, emissions, and new processes and applications.
Abstract: These proceedings contain 88 technical papers, grouped under the following headings: hydrodynamics; heat transfer; combustion; emissions; pressurized circulating fluidized bed; new processes and applications; catalytic processes; reactor modelling and mixing in addition; 5 overviews present an account of the 'state-of-the-art' of different facets of this technology. Thirty-eight papers have been abstracted separately.
585 citations
TL;DR: In this article, the influence of operating conditions, particle properties and bed diameters on radial voidage profiles in circulating fluidized beds operating in the fast regime has been investigated in gas-solid systems.
153 citations
TL;DR: In this article, a model was proposed to predict the heat transfer in a circulating fluidized bed, and experiments were conducted in a 102 mm diameter 5.5 m high Plexiglas column.
106 citations
TL;DR: In this article, a mechanistic model is presented to explain the interdependence of design and operating parameters for prediction of bed-to-wall heat transfer in circulating fluidized bed combustors.
96 citations