| Title |
Fluid Flow in the Fluidized Bed Shell and Tube Type Heat Exchanger with Corrugated Tubes |
| Keywords |
Fluidized bed heat exchanger ; 순환유동층 열교환기 ; Solid particle ; 고체입자 ; Corrugated tube ; 파형관 ; Drag coefficient ; 항력계수 ; Relative velocity ; 상대속도 |
| Abstract |
An experimental study was carried on the characteristics of fluid flow and heat transfer in a fluidized bed shell-and-tube type heat exchanger with corrugated tubes. Seven different solid particles having same volume were circulated in the tubes. The effects of various parameters such as water flow rates, particle geometries and materials, and geometries of corrugated tubes on relative velocities and drag coefficients were investigated. The present work showed that the drag force coefficients of particles in the corrugated tubes were usually lower than those in the smooth tubes, meanwhile the relative velocities between particles and water in the corrugated tubes were little higher than those in the smooth tubes except the glass. |