Download or read book Mathematical Modeling for Coal Combustion written by Anil Samale and published by LAP Lambert Academic Publishing. This book was released on 2010-12 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: In India power generation is carried out through coal based power plants. The efficiency of coal power plants depends on coal combustion phenomenon. Hence there is need for understanding of coal combustion. Study of coal combustion through experimentation is tedious and expensive. This leads to use modeling techniques for understanding coal combustion. Therefore present book explains about the development of a model to describe coal combustion. The model presented in this work couples the heat transfer equation with the chemical kinetics equations. The combustion rate has been modeled by considering the first order reaction. The dependence of the convective and radiative heat transfer coefficient on Nusselt number is incorporated in present work. A finite volume method is used for solving heat transfer equation and Runge- Kutta fourth order method for the chemical kinetics equations. The model explained in present book is useful in power generation domain. The present work is helpful for research scholars and professionals who believe power of modeling.

Download or read book Mathematical Modeling of Pulverized Coal Combustion in a Blast Furnance written by K. Takeda and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling of Pulverized Coal Combustion in Entrained Flow Reactor written by and published by . This book was released on 1989 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling of Combustion Reactions in Porous Coal written by Jan Luberda and published by . This book was released on 1990 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling of Spontaneous Heating of a Coalbed written by John C. Edwards and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

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.

Download or read book Mathematical Modeling of Coal Conversion Processes written by Gerrit Brem and published by . This book was released on 1990 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Mathematical Modelling of Pulverised Coal Combustion in a Blast Furnace written by and published by . This book was released on 1994 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Model of the Coal Combustion Process in Fluidized bed Boilers written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A non-isothermal kinetic model for the simulation of the coal combustion process in atmospheric fluidized-bed boilers has been developed. The gas flow dynamic of the bed is based upon the modified bubble assemblage model, which considers the gas jet zone above the distributor plate, bubble formation and growth along bed height, and an emulsion phase containing char and inert or sorbent particles. Devolatilization of coal particles, kinetics of volatile matter combustion, and burning of the resulting char are taken into account. Entrainment and elutriation rates and corresponding size distributions for char and limestone particles are estimated. The model is capable of predicting heat transfer rates to tube bundles immersed in the bed and to waterwalls in the freeboard, as well as overall combustion and thermal efficiencies. Mass and energy balances for gas and solid particles in the bed and freeboard are solved numerically, and on this basis, the temperature and gaseous species profiles along the boiler height are determined. Initial results of simulations regarding gaseous emissions and particle size distributions are presented.

Download or read book Mathematical Modelling of Solid phase Combustion with Application to a Pulverized Coal Flame written by Tao Lixin and published by . This book was released on 1992 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Model of a Pulverized Coal Fired Combustion Chamber written by Balbir S. Arora and published by . This book was released on 1976 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling for Underground Coal Gasification written by Preeti Aghalayam and published by Momentum Press. This book was released on 2017-10-26 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underground coal gasification (UCG) is an important technique for future coal utilization. It has the potential to be a clean technology and to tap un-mineable, deep coal deposits across the world. Commercialization of UCG has been riddled with a variety of issues, including public perception and a lack of clear comprehension about underlying physicochemical phenomena. This book will bridge the gap in knowledge and highlight the modern findings related to the complex interactions in UCG. With a focus on the chemical reactions in UCG and treating the underground coal cavity as “nature’s own chemical reactor”, various mathematical modeling studies that serve to unravel some of the mysteries of this decades-old technique will be revealed.

Download or read book A Mathematical Model for the Combustion of Pulverised Coal in a Cylindrical Furnace written by I. D. Parkin and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Models and Parameter Study of a Burning Coal Particle written by O. Biede and published by . This book was released on 1994 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling and Simulation of Pulverized Coal char and Bio char Conversion written by Saurav Pokharel and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal is one of the major fossil fuels used for power generation. Coal consumption is decreasing on a global scale, but it is predicted to be in use for power generation until decades to come because of its affordability, reliability, and abundance. However, the carbon intensity of electricity from coal is very high (1000g CO2/KWh). The oxy-fuel combustion and co-firing of coal with biomass are promising technologies to decrease the carbon footprint of coal. This work aims to study the conversion of coal char and pine char in a quartz tube reactor numerically. The effect of fuel type, particle size, and the conversion environment(oxy-combustion and air-like environment) are investigated. Besides that, the performance of a simple SNOR (single nth order reaction) model in predicting the burnout and temperature history of solid fuel particles is also evaluated. The SNOR model is calibrated using the more sophisticated, network-based CBK/E and CBK/G models through the commercially available software “PC Coal Lab”. The SNOR model is verified against the CBK/E and CBK/G models and validated against the experimental data. Simulation results showed that the pine char burned hotter and faster as compared to the coal char which agrees with the experimental results. Both fuels burned with higher peak temperature in an air-like environment than in the oxy-combustion environment because of the greater heat capacity of CO2 and smaller diffusivity of O2 in the oxy-combustion environment. Overall, the simulation results were in good agreement with the experimental results in terms of char temperature history, burnout times, and char core diameter.