Prediction of Performance of a Wood-Burning Stove Using a Thermo-Chemical Model
Rahul Shah1 and A. W. Date2
1M.Tech Student, Mechanical Engineeringg Department, Indian Institute of Technology Bombay, Mumbai 400 076, India.
rbshah2006@gmail.com
2Professor, Mechanical Engineeringg Department, Indian Institute of Technology Bombay, Mumbai 400 076, India.
awdate@me.iitb.ac.in
ABSTRACT
In naturally aspirated wood burning stoves, the air-flow is driven by buoyancy forces which overcome the flow-resistances inside the stove. This air flow, in turn, determines the woodburning rate as well as the overall thermal and combustion efficiencies. The flow and associated heat/mass transfer and combustion phenomena are three-dimensional and time dependent. In this paper, a simplified 4-zone well-stirred thermo-chemical model is developed to predict thermal efficiency, composition of combustion products and excess-air factors for an experimental stove. This work is an extension of the thermal model of Date [6, 7] in which chemical reaction kinetics of char and volatile burning are now included. The model permits investigations of design and operating parameters. Effects of stovegeometry, wood fuel characteristics, cooking-vessel dimensions and other ambient conditions are investigated.
Full Text (PDF)
|
