Transcribed Image Text: A packed bed of rounded sand particles is to be operated using diesel at one-twentieh the settling velocity of one individual particle

Transcribed Image Text: A packed bed of rounded sand particles is to be operated using diesel at one-twentieh the
settling velocity of one individual particle in diesel (U, = Ū; / 20).
a) Calculate the pressure drop per unit length of this bed,
b) If the bed contains 350 kg of these spheres and has a 0.4 m? cross-section, what is the
pressure drop in kPa?
The following information is known:
1. Particle diameter: 10 mm,
2. Bulk density of the operating bed: 1,500 kg/m²,
3. Fluid density: 20 kg/m³,
4. Fluid viscosity: 5×10“ kg/m-s,
5. Density of rounded sand: 2,200 kg/m,
PS: You may assume the dust particles to be spherical for the purpose of calculating the
settling velocity, only.

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