Transient thermal behavior of fluidized bed column

Abstract EN

The effect of the particle size (DP) and the fluidized velocity investigated experimentally and theoretically for different values of heat flux thermal behavior in gas-solid fluidized bed were done with time.

In this work three different particle size was employed (450,650 and 850μ m).

The fluidizing agent was air at different velocities in the range of (2-2.8 m / s).

The rig provided with a horizontal heating tube with outer diameter of (3.175cm) was heated eclectically with different power (supplies 80, 240, 350) Watt Presented mathematical model one dimensional unsteady includes energy, continuity, and momentum equations for each of two phases.

In order to solve the foregoing equations in a numerical way, the discretization method based on control volume procedure has been used the computer code (FLBD) which is written with math lab 2008.

The results show that the temperature distribution along the packing height decreases with increase particle size and the heat flux represents as the temperature increases as the air velocities increase with time.

Compared the experimental and theoretical results and the comparison is a good agreement.