TY - JFULL
AU - Zohreh Orshesh
PY - 2012/9/
TI - Numerical Study on CO2 Pollution in an Ignition Chamber by Oxygen Enrichment
T2 - International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering
SP - 1775
EP - 1779
EM - orshesh_z@yahoo.com
VL - 6
SN - 1307-6892
UR - http://waset.org/publications/5535
PU - World Academy of Science, Engineering and Technology
NX - International Science Index 68, 2012
N2 - In this study, a 3D combustion chamber was simulated
using FLUENT 6.32. Aims to obtain accurate information about the
profile of the combustion in the furnace and also check the effect of
oxygen enrichment on the combustion process. Oxygen enrichment is
an effective way to reduce combustion pollutant. The flow rate of air
to fuel ratio is varied as 1.3, 3.2 and 5.1 and the oxygen enriched
flow rates are 28, 54 and 68 lit/min. Combustion simulations
typically involve the solution of the turbulent flows with heat
transfer, species transport and chemical reactions. It is common to
use the Reynolds-averaged form of the governing equation in
conjunction with a suitable turbulence model. The 3D Reynolds
Averaged Navier Stokes (RANS) equations with standard k-ε
turbulence model are solved together by Fluent 6.3 software. First
order upwind scheme is used to model governing equations and the
SIMPLE algorithm is used as pressure velocity coupling. Species
mass fractions at the wall are assumed to have zero normal
gradients.Results show that minimum mole fraction of CO2 happens
when the flow rate ratio of air to fuel is 5.1. Additionally, in a fixed
oxygen enrichment condition, increasing the air to fuel ratio will
increase the temperature peak. As a result, oxygen-enrichment can
reduce the CO2 emission at this kind of furnace in high air to fuel
rates.
ER -