Mahdi Hamzehei
Study of Heat Transfer in the Poly Ethylene Fluidized Bed Reactor Numerically and Experimentally
1076 - 1084
2011
5
6
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/6657
https://publications.waset.org/vol/54
World Academy of Science, Engineering and Technology
In this research, heat transfer of a poly Ethylene
fluidized bed reactor without reaction were studied experimentally
and computationally at different superficial gas velocities. A multifluid
Eulerian computational model incorporating the kinetic theory
for solid particles was developed and used to simulate the heat
conducting gas–solid flows in a fluidized bed configuration.
Momentum exchange coefficients were evaluated using the Syamlal–
OBrien drag functions. Temperature distributions of different phases
in the reactor were also computed. Good agreement was found
between the model predictions and the experimentally obtained data
for the bed expansion ratio as well as the qualitative gas–solid flow
patterns. The simulation and experimental results showed that the gas
temperature decreases as it moves upward in the reactor, while the
solid particle temperature increases. Pressure drop and temperature
distribution predicted by the simulations were in good agreement
with the experimental measurements at superficial gas velocities
higher than the minimum fluidization velocity. Also, the predicted
timeaverage local voidage profiles were in reasonable agreement
with the experimental results. The study showed that the
computational model was capable of predicting the heat transfer and
the hydrodynamic behavior of gassolid fluidized bed flows with
reasonable accuracy.
Open Science Index 54, 2011