Air flows through a packed bed of a powdery material of 2 cm depth at a superficial gas velocity of 1 cm/s. A manometer connected to the unit registers a pressure drop of 2 cm of water. The bed has a...

Extracted text: Air flows through a packed bed of a powdery material of 2 cm depth at a superficial gas velocity of 1 cm/s. A manometer connected to the unit registers a pressure drop of 2 cm of water. The bed has a porosity of 0.6. If Burke -Plummer equation is valid for the range of study, estimate the particle diameter size of the powder. Data: Pair = 1.23 kg/m’, pwater = 1000 kg/m³, g = 9.8 m/s² and ¤¸ =1. a) D = 4.06×108 m| b) D, = 5.06×10* m c) D, = 6.06×10-8 m d) D, = 8.06×10 m %3D