Wall-to-Bed Heat Transfer in a Turbulent Fluidized Bed

摘要

The wall-to-bed heat transfer in turbulent fluidized beds was investigated in a 10.8 cm i.d.x 5.7 m high with expanded top fluidized bed. The Group A and Group B particles were used for experiments. The results showed that for Group A particles the heat transfer coefficient increased with the increase of superficial gas velocity. For Group B particles the heat transfer coefficient decreased with the increase of superficial gas velocity. The dependence of heat transfer coefficient on local voidage was also discussed.