Characteristics of heat transfer and particle behavior in a circulating fluidized beds : for the case of thin platinum wire as heat transfer surface

This paper describes the characteristics of heat transfer around a horizontal thin wire in a solid-air mixed flow of circulating fluidized beds (CFB). This thin wire was a 200μm diameter of platinum wire and the containing particle was glass beads of various diameter (100,200 and 400μm). It was clarified that heat transfer characteristics depended on the particle density and the fluid-dynamics of mixed flow in the turbulent fluidization region not in dilute (fast) fluidization region. In dilute (fast) fluidization region heat transfer characteristics depended on flow convection. As the results, we proposed experimental equations corresponding to each fluidization region.