Wu Dongyin

A Study on Heat Transfer for Immersed Tube in Internally Circulating Fluidized Bed

Heat transfer coefficients for horizontally immersed tubes have been studied in a model of ICFB (Internally Circulating Fluidized Bed). The characteristics in ICFB were found to be significantly different from those in bubbling bed. There is a flowing zone with high velocity in the heat exchange zone. The heat transfer coefficients strongly depend on the fluidized velocity in the flowing zone. The heat exchange process and suitable bed temperature can be controlled according to this feature. Based on the results of the experiments, a formulation for heat transfer has been developed.