Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
7th Edition
ISBN: 9780072848236
Author: Warren McCabe, Julian C. Smith, Peter Harriott
Publisher: McGraw-Hill Companies, The
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Chapter 1, Problem 1.15P
Interpretation Introduction

Interpretation: The Nusselt number is the function of Reynolds number and Prandtl number is to be proved.

Concept introduction: Nusselt number is the ratio of convective heat transfer to the conductive heat transfer.

It is represented by Nu .

  Nu=hDk .

Prandtl number is the ratio of kinematic viscosity to the thermal diffusivity.

It is denoted by Pr .

  Pr=μcpk .

Multiply the both sides of given equation by DGμ and left hand side by kk .

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fluidized bed reactor uses a solid catalyst with a particle diameter of 0.25 mm, a bulk density of 1.50 g/mL, and a sphericity of 0.90. Under packed bed conditions, the porosity is 0.35, and the bed height is 2 m. The gas enters from the bottom of the reactor at a temperature of 600°C, with a viscosity of 0.025 cP and a density of 0.22 lb/ft³. At minimum fluidization, the porosity reaches 0.45. Calculate: a. The minimum superficial velocity (VM) of the gas entering the fluidized column. b. The bed height if V = 2 VM c. The pressure drop under conditions where V =2.5 VM
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Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:9780072848236
Author:Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:McGraw-Hill Companies, The