1 m in a vessel of cross-sectional area 0.04 m2 . The mass of solids in the bed is 50 kg and the surface- volume mean diameter of the particles is 1mm. A liquid of density 800 kg.m3 and viscosity 0.002 Pa s flows upwards through the bed, which is restrained at its upper surface. (a) Calculate the voidage (volume fraction occupied by voids) of the bed. (b) Calculate the frictional pressure drop across the bed when the volume flow rate of liquid is 1:44m3
1 m in a vessel of cross-sectional area 0.04 m2 . The mass of solids in the bed is 50 kg and the surface- volume mean diameter of the particles is 1mm. A liquid of density 800 kg.m3 and viscosity 0.002 Pa s flows upwards through the bed, which is restrained at its upper surface. (a) Calculate the voidage (volume fraction occupied by voids) of the bed. (b) Calculate the frictional pressure drop across the bed when the volume flow rate of liquid is 1:44m3
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
5. A packed bed of solid particles of density 2500 kg/m3 occupies a depth of
1 m in a vessel of cross-sectional area 0.04 m2
. The mass of solids in the
bed is 50 kg and the surface- volume mean diameter of the particles is 1mm.
A liquid of density 800 kg.m3
and viscosity 0.002 Pa s flows upwards
through the bed, which is restrained at its upper surface.
(a) Calculate the voidage (volume fraction occupied by voids) of the bed.
(b) Calculate the frictional pressure drop across the bed when the volume
flow rate of liquid is 1:44m3
/h.
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