Effect of Fuel Moisture on Combustion in a Bagasse Fired Furnace

[+] Author and Article Information
K. S. Shanmukharadhya

Department of Mechanical Engineering,  Bannari Amman Institute of Technology, Sathyamangalam 638 401, Indiakss̱bit05@yahoo.co.in

K. G. Sudhakar

 Government Tool Room & Training Centre, Bangalore 560 044, India

J. Energy Resour. Technol 129(3), 248-253 (Aug 23, 2006) (6 pages) doi:10.1115/1.2748816 History: Received March 17, 2006; Revised August 23, 2006

Sugar cane bagasse, a biomass material that is readily available, has been used as a fuel for well over 4 decades. However, combustion of bagasse has its own special set of problems which appear to be due largely to the high moisture content of the fuel. In this present research work, in order to gain insight into the effect of moisture on the flame front, an experimental program is carried out on an operating, industrial size bagasse-fired furnace. The furnace is modeled by the three-dimensional CFD package FLUENT . The results of modeling show a considerable delay to ignition due to the drying of fuel. The effect of fuel moisture on drying and heating up of the fuel is the key feature for the investigation done in this work.

Copyright © 2007 by American Society of Mechanical Engineers
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Figure 1

Meshed furnace used for modeling

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Figure 2

TG and DTA result of bagasse

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Figure 3

Moisture loss details of the particles

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Figure 4

Temperature profiles of the particles on the grate

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Figure 5

Velocity of the particles on the grate

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Figure 6

Temperature zone in K along the spreader plane

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Figure 7

Measured and predicted temperatures along the grate depth



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