Prediction of heat transfer coefficient between immersed surfaces and fluidized beds

An empirical model based on dimensional analysis has been developed, to predict the heat transfer coefficient in fluidized bed. To verify the model, a series of experiments were conducted in a cylindrical reactor, with an inside diameter (I. D.) of 142 mm and a height of 1 m, having a spherical copper heater. Experiments were performed at a gas velocity ranging from 0.02-1.5 m/s, and for five different solid particles. The predicted results were compared with the data of the present experiments, as well as with models and experimental data of other investigators.