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Author : Jan Olofsson
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.3/5 (243 download)
Download or read book Mathematical Modelling of Fluidised Bed Combustors written by Jan Olofsson and published by . This book was released on 1980 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. C. Saxena
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (319 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (933 download)
Download or read book Mathematical Modelling of Fluidized Bed Coal Combustion written by and published by . This book was released on 1987 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interim report outlining work done on modelling fluidized bed combustors since July 1985. The report includes a description of the framework of assumptions used in developing the model; most of the equations that result and the proposed method of solution; ancillary work on various details of the model and the programming; and a summary of future work required to complete and extend the model.
Author : Jens Paulus Hannes
Publisher :
ISBN 13 : 9783888170027
Total Pages : 264 pages
Book Rating : 4.1/5 (7 download)
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:
Author : Peter Edmund Gordon Gogolek
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (123 download)
Download or read book Mathematical Modelling of Fluctuations in Fluidized Bed Combustion written by Peter Edmund Gordon Gogolek and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Modelling of Fluctuations in Fluidized Bed Combustion written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (933 download)
Download or read book Mathematical Modelling of Fluidized Bed Coal Combustion, I written by and published by . This book was released on 1989 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling hydrodynamics is the first step in modelling fluidized bed combustion. This report identifies regions of characteristic hydrodynamics and delimits them according to the particle concentration profile as a basis for the three zone model. This model consists of the dense bed, the splash zone and the freeboard and also includes the effect of the presence of tubes on the extents of the zones. The two-phase flow of gas in the dense bed is examined in some detail and the flow of particles between zones and in the freeboard is discussed. Appendices give modelling details and supporting evidence for some modelling decisions.
Author : Simeon Oka
Publisher : CRC Press
ISBN 13 : 9781420028454
Total Pages : 620 pages
Book Rating : 4.0/5 (284 download)
Download or read book Fluidized Bed Combustion written by Simeon Oka and published by CRC Press. This book was released on 2003-09-16 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: A realization of recent clean energy initiatives, fluidized bed combustion (FBC) has quickly won industry preference due to its ability to burn materials as diverse as low-grade coals, biomass, and industrial and municipal waste. Fluidized Bed Combustion catalogs the fundamental physical and chemical processes required of bubbling fluidized beds before launching into application-centered coverage of hot-gas generator, incinerator, and boiler concepts and design, calculations for regime parameters and dimensions, and all aspects of FBC operation. It enumerates the environmental consequences of fluidized bed processes and proposes measures to reduce the formation of harmful emissions.
Author : Michael Jay Singer
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (629 download)
Download or read book A mathematical model for the fluidized bed combustion of Texas lignite written by Michael Jay Singer and published by . This book was released on 1979 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sheila Ruth Payne
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (52 download)
Download or read book Fluidized Bed Combustion a Dynamic Mathematical Model written by Sheila Ruth Payne and published by . This book was released on 1978 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : University of Illinois at Chicago Circle. Department of Energy Engineering
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.F/5 ( download)
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:
Author :
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (152 download)
Download or read book Assessment of the Practical Potential of Mathematical Modelling of Fluidized Bed Combustion and Recommendations for Canadian Participation for in IEA Joint Projects on Modelling written by and published by . This book was released on 198? with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MATHEMATICAL MODELING OF NOx EMISSIONS IN BUBBLING FLUIDIZED BED COMBUSTORS. written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive model, previously developed and tested for prediction of behavior of continuous fluidized bed combustors is extended to incorporate NOx formation and reduction reactions and applied to the simulation of METU 0.3 MWt Atmospheric Bubbling Fluidized Bed Combustor (ABFBC) burning lignites with high volatile matter in their own ashes. The predictive accuracy of the model was assessed by comparing its predictions with measurements taken previously on the same rig. Favorable comparisons are obtained between the predicted and measured temperatures and concentrations of gaseous species along the combustor. Results show that determination of partitioning of coal nitrogen into char nitrogen and volatile nitrogen, and release of volatile nitrogen along the combustor are found to be the most important parameters that affect NOx formation and reduction in bubbling fluidized bed combustors. The system model proposed in this study proves to be a useful tool in qualitatively and quantitatively simulating the processes taking place in an atmospheric fluidized bed combustor.
Download or read book MATHEMATICAL MODELING OF SULFUR RETENTION IN FLUIDIZED BED COMBUSTORS. written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A considerable number of modeling studies for the investigation of sulfur retention in atmospheric bubbling fluidized bed combustors have been carried out and well documented in the literature. Despite 30 years of intensive study of sulfation process in fluidized bed combustors and numerous laboratory studies, there are still many uncertainties and disagreements on the subject. In addition, modeling sulfur retention performance of Turkish lignites with high sulfur, volatile matter and ash contents has not drawn much attention to date. Recent trend in utilization of indigenous lignites in fluidized bed boilers necessitated investigation of pollutant emissions and adaptation of fluidized bed combustion technology to these lignites. In an attempt to achieve this objective, a system model, previously developed and tested for the prediction of the combustion behavior of fluidized bed combustors was extended to incorporate sulfur retention. The predictive accuracy of the model was assessed by applying it to the prediction of the behavior of METU 0.3 MWt ABFBC test rig burning indigenous lignites in their own ashes, and comparing its predictions with measurements taken on the same rig. Sulfur dioxide concentration predictions throughout the combustor were found to be in good agreement with the experimental data except for the small discrepancy between predictions and measurements in the bed section. Measurements and model predictions revealed that recyling enhances calcium utilization significantly by increasing the sorbent residence time leading to higher sulfur retention efficiencies. The system model proposed in this study proves to be a useful tool in qualitatively and quantitatively simulating the processes taking place in an atmospheric fluidized bed combustor.
Author : F. Preto
Publisher :
ISBN 13 :
Total Pages : 113 pages
Book Rating : 4.:/5 (257 download)
Download or read book A Mathematical Model for Fluidized Bed Coal Combustion written by F. Preto and published by . This book was released on 1985 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. C. Saxena
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (31 download)
Download or read book A Mathematical Model for the Continuous Combustion of Char Particles in a Fluidized Bed written by S. C. Saxena and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gao Yang
Publisher :
ISBN 13 :
Total Pages : 203 pages
Book Rating : 4.:/5 (256 download)
Download or read book Mathematical Modeling and Experimental Study of Gas/solid Flows and Combustion in the Vortexing Fluidised-bed Combustor (VFBC) Freeboard written by Gao Yang and published by . This book was released on 1990 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:
