Estimate the minimum fluidization velocity and backwash rate for the sand filter at 15 o C. The d90 size of sand is 0.88 mm. The density of sand is 2.65 g/cm3 . (ρ= 0.999 g/cm3 ; µ=0.00113 N.s/m2 ; g=981 cm/s2 ; V=1.306x10 -6 m2 /s).

Introduction to Chemical Engineering Thermodynamics
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Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Estimate the minimum fluidization velocity and backwash rate for the sand filter at 15 o C. The d90 size of sand is 0.88 mm. The density of sand is 2.65 g/cm3 . (ρ= 0.999 g/cm3 ; µ=0.00113
N.s/m2 ; g=981 cm/s2 ; V=1.306x10 -6 m2 /s).

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