3th WCSET-2014 at Nepal
Special Session at Ho Chi Minh City University of Technology, Vietnam:
Title:
Fluent modelling on rice husk combustion in a chamber of
Hoffman brick kiln
Authors:
Le Thi Kim Phung, Le Anh Kien
Abstract: Rice
husk is becoming a popular fuel use for Hoffman brick
kiln in Vietnam. The combustion of rice husk in a
Hoffman kiln chamber was not well-known in literature
review. This paper showed the study of combustion taken
place in Hoffman kiln chamber in both empirical and
modelling method. The experimental results showed that
the CO concentration was from 14mg/m3 to over 3100mg/m3,
the temperature in the chamber was varying from 795oC to
1050oC during the kilning time. Oxygen content was from
5% to 20%. In the modelling method, the computation was
conducted using Fluent version 14.0. In calculation, the
unsteady model, 2D space planar, pressure based type,
and absolute velocity were used. The species transport
and volume reaction were defined to model the gas phase.
The multiphase model was employed to solve the problem
using two phase modelling. The k- sub-model combined
with near-wall treatment for the standard wall functions
were employed for turbulence. The computational results
fitted to the experimental results. Temperature in
calculation was from 400oC to 900oC. The highest CO
content in Fluent modelling was about 2200mg/m3. This
paper contributed the suitable mathematical model for
the combustion of rice husk in the Hoffman brick kiln.
Keywords: Combustion, Rice
husk, CFDs, Fluent, Hoffman kiln
Pages:
687-691