Flow through Packed Bed
1. Derive the Ergun's equation for pressure drop in packed bed. What are the assumptions made?
What are the limitations for the application of Ergun's equation?
2. Define sphericity, equivalent particle diameter and specific surface area.
3. Packed bed is composed of cubes 0.02 m and the bulk density of the packed bed is 980kg/m3. The density of the solid cubes is 1500 kg/m3.
a. Calculate the void fraction () and effective diameter (Dp).
b. What is the void fraction if the cubes are replaced with cylinders that have a diameter 0.02 m and a height 0.02 m, all other parameters remaining the same?