Institutional-Repository, University of Moratuwa.  

One dimensional mathematical model for packed bed biomass combustion using MATLAB

Show simple item record

dc.contributor.advisor Narayana, M
dc.contributor.author Priyadarshani, U
dc.date.accessioned 2018
dc.date.available 2018
dc.date.issued 2018
dc.identifier.citation Priyadarshani, U. (2018). One dimensional mathematical model for packed bed biomass combustion using MATLAB [Master’s theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.lib.mrt.ac.lk/handle/123/16068
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/16068
dc.description.abstract Packed bed biomass combustion is widely used thermal conversion process which contributes major portion of energy fulfillment around the globe. This process is usually involving higher operation cost due to low efficiency and high emissions. Hence there is a huge room for improvements in the process and needs to be optimized as well as modernized. This thesis presents two-phase one-dimensional mathematical model with MATLAB solver which can be used for diagnosis and optimization of packed bed combustion process under low computing resources and less cost. The mathematical model uses the discretized equations to develop the ordinary differential equations which are solved using implicit method. Free-board region is not taken into account. Only the biomass bed is considered here to solve the combustion system by applying conservation equations into gas and solid phase separately. The main model is consisting with different sub models with subjected to four stages of combustion as drying, pyrolysis, Char oxidization and char combustion. The biomass batch is initially ignited by continuous preheated gas inlet and higher gas flow rate. Radiation heat transfer is assumed to be negligible due to high temperature gas flow at the inlet. Combustion is occurred in batch wise. Particle diameter and bed porosity is considered with a mean value for the simplicity of the model. The developed model is used to find the solid temperature profile and generation of CO2 and CO gases. By using walking column approach, industrial moving grate furnace was represented and required optimum grater length for a particular mass flow rate can be calculated with the fixed bed simulation results. en_US
dc.language.iso en en_US
dc.subject CHEMICAL AND PROCESS ENGINEERING-Dissertations en_US
dc.subject SUSTAINABLE PROCESS DEVELOPMENT-Dissertations en_US
dc.subject BIOMASS en_US
dc.subject COMBUSTION en_US
dc.subject MATHEMATICAL MODELS-Layer Lumped Model en_US
dc.subject MATLAB en_US
dc.title One dimensional mathematical model for packed bed biomass combustion using MATLAB en_US
dc.type Thesis-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.degree MSc in Sustainable Process Development en_US
dc.identifier.department Department of Chemical and Process Engineering en_US
dc.date.accept 2018
dc.identifier.accno TH3816 en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record