TY - JFULL AU - Mahdi Hamzehei PY - 2011/7/ TI - Study of Heat Transfer in the Poly Ethylene Fluidized Bed Reactor Numerically and Experimentally T2 - International Journal of Mechanical and Mechatronics Engineering SP - 1075 EP - 1084 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/6657 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 54, 2011 N2 - 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– O-Brien 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 time-average 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 gas-solid fluidized bed flows with reasonable accuracy. ER -