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목차

Ch 17. Principles of Diffusion&Mass transfer between phases
1. Nomenclatures
2. Molecular Diffusion
3. Turbulent Diffusion
4. Mass Transfer Coefficient
5. Mass Transfer between Phases

CH 18. Gas Absorption
1. Principles of Absorption
2. Tower Height

CH 19. Humidification
Assumptions
1. Definitions
2. Adiabatic Saturation(Cooling) Temperature,
3. Wet Bulb temperature

CH 21. Distillation
1. Vapor-Liquid Equilibrium (VLE)
2. Flash distillation(or equilibrium distillation)
3. Rectification (정류)
4. McCabe-Thiele Method

CH 23. Leaching and Extraction
1. Leaching

본문내용

Ch 17. Principles of Diffusion&Mass transfer between phases

Assumptions (If not specified)
1) Steady-state
2) No chemical reaction
3) Binary mixtures ; Composition A&B
4) One directional transfer (Z-directional)

1. Nomenclatures
1) Concentration
① Mass density(or mass concentration) ()
: mass density of component A
: mass density of component B
: mass density of mixture
,
② Molar concentration(or molar density) ()
: molar concentration of A
: molar concentration of B
,
2) Velocities
① Velocities relative to fixed plane

② Average velocities of bulk flow
ⅰ) mass average velocity, u

ⅱ) molar average velocity, u0

③ Diffusion velocity(or velocities relative to bulk flow)
ⅰ) mass diffusion velocities
"A" :
"B" :
ⅱ) molar diffusion velocities
"A" :
"B" :

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