Diffusion Mass Transfer

Jul 25, 2012

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Physical Origins and Rate EquationsMass Transfer in Nonstationary MediaConservation Equation and Diffusion through Stationary Media Diffusion and Concentrations at Interfaces Diffusion with Homogenous Reactions Transient Diffusion. 3. Conservation Equation and Diffusion through Stationary Medi

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Diffusion Mass Transfer

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1. Diffusion Mass Transfer Chapter 14 Sections 14.1 through 14.7

Mass Diffusion

Mass Diffusion. P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi. Physically distinct & Mathematically analogous to Heat Conduction……. Mass Transfer. Mass transfer : The transfer of mass (Chemical species) into or out of a substance.

1.16k views • 32 slides

Momentum Heat Mass Transfer

Momentum Heat Mass Transfer. MHMT 7. Turbulent flows.

572 views • 29 slides

Diffusion Mass Transfer

Diffusion Mass Transfer. Chapter 14 Sections 14.1 through 14.7. Lecture 19. Physical Origins and Rate Equations Mass Transfer in Nonstationary Media Conservation Equation and Diffusion through Stationary Media Diffusion and Concentrations at Interfaces

1.65k views • 0 slides

Introduction to Mass Transfer

Introduction to Mass Transfer. Outline. Mass Transfer Mechanisms Molecular Diffusion Convective Mass Transfer 2. Fick’s Law for Molecular Diffusion 3. Molecular Diffusion in Gases Equimolar Counterdiffusion Combined Diffusion and Convection Uni -component Diffusion.

1.69k views • 28 slides

Diffusion Mass Transfer

Diffusion Mass Transfer. Chapter 14 Sections 14.1 through 14.7. Lecture 20. Physical Origins and Rate Equations Mass Transfer in Nonstationary Media Conservation Equation and Diffusion through Stationary Media Diffusion and Concentrations at Interfaces

1.74k views • 0 slides

Diffusion Mass Transfer

Diffusion Mass Transfer. Chapter 14 Sections 14.1 through 14.7. Lecture 18. Physical Origins and Rate Equations Mass Transfer in Nonstationary Media Conservation Equation and Diffusion through Stationary Media Diffusion and Concentrations at Interfaces

929 views • 0 slides

Momentum Heat Mass Transfer

Momentum Heat Mass Transfer. MHMT3. Kinematics and dynamics. Constitutive equations. Kinematics of deformation , stresses, invariants and r heological constitutive equations . Fluids, solids and viscoelastic materials . Rudolf Žitný, Ústav procesní a zpracovatelské techniky ČVUT FS 2010.

982 views • 69 slides

Mass Transfer 2

Mass Transfer 2. Section # 9. Sheet#2 , Problem#1. Givens: Air-water vapor mixture T=65 o C, T w =35 o C, P T = 1 atm The radiation coefficient can be considered negligible Antoine constants for water The steam table Required: The humidity of the air without using the chart.

601 views • 23 slides

Diffusion Mass Transfer

Diffusion Mass Transfer. Chapter 14 Sections 14.1 through 14.7. Lecture 21. Physical Origins and Rate Equations Mass Transfer in Nonstationary Media Conservation Equation and Diffusion through Stationary Media Diffusion and Concentrations at Interfaces

3.01k views • 32 slides

Mass Transfer

Mass Transfer. Section # 8. Sheet#2 , Problem#3. Givens: Tray dryer of 4 sections in series (A, B, C, and D) T 1,3,5,7 =325 K, w 1 =0.005, %RH 2,4,6,8 = 60%, V 8 = 4.75 m 3 /sec The wet material in each dryer reaches t w Neglect heat losses Required:

1.45k views • 43 slides

Mass Transfer 2

Mass Transfer 2. Section # 10. Solids- Free coordinates in Leaching. Sometimes, we don’t use the triangle for representing the leaching ternary system. Rectangular diagram is used in such cases. It is similar to ( Ponchon-Savarit ) used before in distillation. B

1.43k views • 47 slides

Internal Flow: Mass Transfer

Internal Flow: Mass Transfer. Chapter 8 Section 8.9. Convection mass transfer occurs for gas flow through a tube whose inner surface is coated with a volatile liquid (evaporation) or solid (sublimation) and characterized by a uniform concentration, . General Considerations.

382 views • 8 slides

Momentum Heat Mass Transfer

Momentum Heat Mass Transfer. MHMT 10. Heat transfer-conduction. Multidimensional heat conduction problems. Fins and h eat conduction with internal sources or sinks. Unsteady heat conduction in solids. Penetration theory. Rudolf Žitný, Ústav procesní a zpracovatelské techniky ČVUT FS 2010.

683 views • 23 slides

Mass Transfer and Diffusion

Mass Transfer and Diffusion. Mass transfer is the net movement of a component in a mixture from one location to another location where the component exists at a different concentration . ~Mass transfer takes place between two phase across an interface.

1.43k views • 28 slides

Principles of Mass Transfer Molecular Diffusion in Liquids

Principles of Mass Transfer Molecular Diffusion in Liquids. Where solute A is diffusing and solvent B is stagnant or nondiffusing. Example: Dilute solution of propionic Acid (A) in water (B) being contact with toluene. EXAMPLE 6.3-1. An ethanol ( A )-water ( B ) solution in the form of

1.41k views • 38 slides

Mass Transfer Coefficient

Mass Transfer Coefficient. Mass transfer coefficients - simplified method to describe complex boundary condition involving flow and diffusion. Mass transfer from a surface to a fluid. Mass Transfer Coefficient. Flux from surface into the fluid:. -Brackets denote a spatial average.

1.09k views • 24 slides

External Flow: Mass Transfer

External Flow: Mass Transfer. Chapter 7 Sections 7.2 - 7.5, 7.7, 7.8. Mass Transfer. Mass Transfer. Correlations for convection mass transfer coefficients associated with evaporation or sublimation from liquid or solid surfaces in external flow may be inferred from

681 views • 12 slides

Diffusion Mass Transfer

Diffusion Mass Transfer. Chapter 14 Sections 14.1 through 14.7. General Considerations. General Considerations. Mass transfer refers to mass in transit due to a species concentration gradient in a mixture. Must have a mixture of two or more species for mass transfer to occur.

1.16k views • 18 slides

Principles of Mass Transfer (CHAPTER 3) Molecular Diffusion in Liquids

Principles of Mass Transfer (CHAPTER 3) Molecular Diffusion in Liquids. Where solute A is diffusing and solvent B is stagnant or nondiffusing. Example: Dilute solution of propionic Acid (A) in water (B) being contact with toluene. EXAMPLE 6.3-1.

1.46k views • 35 slides

Introduction to Mass Transfer

Introduction to Mass Transfer. Introduction. Three fundamental transfer processes: Momentum transfer Heat transfer Mass transfer. Mass transfer may occur in a gas mixture, a liquid solution or solid. Mass transfer occurs whenever there is a gradient in the concentration of a species.

2.4k views • 44 slides

Momentum Heat Mass Transfer

Momentum Heat Mass Transfer. MHMT 14. Mass transfer. Fick´s law. Molecular mass transfer. Mass transfer with chemical reactions. Unsteady mass transfer. Convective mass transfer. Axial dispersion model. Rudolf Žitný, Ústav procesní a zpracovatelské techniky ČVUT FS 2010.

390 views • 37 slides

Momentum Heat Mass Transfer

Momentum Heat Mass Transfer. MHMT 8. R TD. Residence time distribution. Rudolf Žitný, Ústav procesní a zpracovatelské techniky ČVUT FS 2010. Residence Time Distribution. MHMT 8.

238 views • 17 slides

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