Abstract
The fluidized bed is utilized in various industrial processes such as combustion, drying, mixture, the catalyst reaction, coating and granulation etc. In the present study, we have focused on the heat transfer mechanism in gas-solid flow in circulating fluidized bed. It is known that the heat transfer at the riser walls is dominated by collision between particles and the wall. However, the effect of the velocity of the falling particles in such mechanisms hasn't been studied yet. The major challenge for this is the precise measurement of the velocity of the falling particles. Hence, the present authors have evaluated the applicability of imaging technique based in Particle Image Velocimetry (PIV) to measure the particle descent velocity.
