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ChE 152Transport Processes

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Course Description

Fundamentals of heat, mass and momentum transport.

Differential balances, equations of change. Molecular and

turbulent transport system. Application to interphase transfer.

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Prelim Coverage:Momentum Transfer Fundamentals General Equation for Transfer Processes

Analogy of Momentum, Heat and Mass Transfer

Newtons Law and Viscosity of Fluids

Types of Fluids

Time-Independent Fluids

Time-Dependent Fluids Laminar and Turbulent Flow

Reynolds Experiments

Reynolds Number

Flow through Non-Circular Sections

Overall Balance around the System Overall Mass Balances

Overall Energy Balances

Overall Momentum Balances

Momentum Transfer Operations/Applications

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Midterm Coverage:Heat Transfer Fundamentals

Modes of Heat Transfer

Conduction Heat Transfer and Fourier Law

Flow through Slabs, Cylinders and Spheres

Flow through Solids in Series and Parallel

Convection Heat Transfer

Forced Convection Heat Transfer

Natural Convection Heat Transfer

Heat Exchangers

Radiation Heat Transfer

Nature of Radiation

Kirchhoffs Law

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Finals Coverage:Mass Transfer Fundamentals Mass Diffusion and Ficks Law

Equimolar Counter Diffusion

Unimolecular Counter Diffusion

Diffusion in Different Flow Geometries

Diffusivity Self-Diffusivity

Mutual Diffusivity

Tracer Diffusivity

Diffusion of Gases

Prediction of Gas Diffusivities

Diffusion of Liquids

Prediction of Liquid Diffusivities

Diffusion in Biological Solutions, Gels and Solids

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References

Foust, A., et. al. Principles of Unit Operations, 2ndEdition.

John Wiley and Sons. New York. 1980.

Geankoplis, C. Transport Processes and Separation Process

Principles, 4thEdition. Prentice Hall PTR. New Jersey. 2003.

McCabe, W., Smith, J. and Harriott. Unit Operations ofChemical Engineering, 6thEdition. McGraw-Hill. New York.

2001.

Perry, R. and Green, D. Perrys Chemical Engineers

Handbook, 8

th

Edition. McGraw-Hill. New York. 2007 Bird, R.B., Stewart, W.E., and Lightfoot, E.N. Transport

Phenomena, 2ndEdition. John Wiley and Sons. New York.

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Introduction

The unit operationsdeal mainly with the transfer and change

of energy and the transfer and change of materials primarily

by physical means but also by physical-chemical means.

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Classification of Unit Operations

Fluid flow

Heat transfer

Evaporation

Drying

Distillation Absorption

Membrane separation

Liquid-liquid extraction

Adsorption Liquid-solid leaching

Crystallization

Mechanical-physical separations

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Fundamentals of Transport Processes

Momentum Transfer

Concerned with the transfer of momentum which occurs in

moving media.

Heat Transfer Concerned with the transfer of heat or thermal energy from one

place to another.

Mass Transfer Concerned with the mass being transferred from one phase to

another distinct phase.

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General molecular transport

equation

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General molecular transport

equation

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General molecular transport

equation

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Example

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General Property Balance for

Unsteady State In calculating the rates of transport in a system using the

molecular transport equation, it is necessary to account for

the amount of this property being transported in the entire

system.