B134 流動層内における粒子対流熱伝達 : 壁面接触熱抵抗の評価(OS-4:対流伝熱(3))

抄録

To understand the heat transfer characteristics in fluidized bed, the particle convection becomes the most important factor in the bed. In this investigation, the heat transfer experiment under a forced particle convection was conducted by using the cylinder-shaped fluidized with stirrer, and we measured a temperature in the bed. In this experiment, several sizes of particles (d_p=0.2mm, 0.4mm, 1.0mm) were used. As a result, there was a sharp temperature drop in the first layer from the heating surface. And the experimental results were estimated by using a simple heat transfer model with effective thermal conductivity, particle-gas heat transfer coefficient and thermal contact resistance.