Chemical and Materials Engineering Department
ChE 333- Mass Transfer (3:3,1) Fall 2008 / 2009 Catalog Description
Fundamentals of mass transfer processes. The control volume approach to the mass transfer processes, differential equations of mass transfer. Steady and unsteady –state molecular diffusion.
Natural and forced convection mass transfer. Mass transfer theories. Convective mass transfer correlations. Analysis of chemical engineering operations involving mass transfer.
Simultaneous heat and mass transfer; mass transfer accompanied by chemical reaction.
Course Prerequisite(s)
• ChE 201
Prerequisite knowledge and/or skills
• Principles of thermodynamics
• Material and energy balances
• Momentum transfer
• Heat transfer
Textbook(s) and/or other required material
• Mass Transfer: Fundamentals of Momentum, Heat and Mass transfer. J.R.Welty,R.E.Wilson and C.E.Wicks. 4 th Edition , John Wiley (2000).
References:
1. Heat Transfer: Fundamentals of Heat and Mass transfer, F.I.Incropera and Dewitt. 5 th Edition , John Wiley (2000)
2. Transport Processes and Unit Operations, C. J. Geankoplis, 2 nd Edition, Allyn and Bacon.
Instructor:
Dr. Uthman M. Dawoud , Associate Professor of Chemical Engineering, [email protected]
Teaching Assistant: Yousef Algoufi , Graduate assistant of Chemical Engineering Department, [email protected]
Classes:
Lect : S.M. W. 10 – 10:50 AM
Tutor : W. 2:30 – 5:30 PM
Room : Building, 107, 22
Course objectives
• Understanding of mass transfer modes.
• Be able to derive and apply the mass diffusion equations.
• To familiarize the student with topics such as steady , unsteady molecular diffusion and convective mass transfer.
• Improve his critical thinking and analytical skills.
• Apply mass transfer fundamentals to calculate rates of mass transfer for practical situations and to identify rate-limiting processes.
• Gain and improve his ability to explain course materials in his own words and phrases.
• Apply course concepts in solving interdisciplinary problems.
Topics covered
• Fundamentals principles of mass transfer
• Diffusion coefficients; mass transfer coefficients
• Differential equations of mass transfer
• Steady-state molecular diffusion
• Unsteady-state molecular diffusion
• Convective mass transfer
• Convective mass transfer correlations
• Simultaneous heat and mass transfer
Assessment of student progress toward course objectives
• Tutorial 15 %
• Final exam 40 %
• Exam 1 20 %
• Exam 2 20 %
• Attendance and Participation 5 %
Computer Usage: None Laboratory Projects: None
Teaching Schedule& Course outline :
Chapter Week # Topics to be covered
24 1 Fundamentals of mass transfer
●Molecular mass transfer.
●The Fick ’s rate equation.
●Related types of molecular mass transfer
24 2 ●The diffusion coefficient
●Gas mass diffusivity
●Liquid mass diffusivity
24 3 ●Pore diffusivity
●Knudson diffusion
●Solid mass diffusivity
●Convective mass transfer
25 4,5,6 Differential equations of mass transfer
●Special forms of the differential mass transfer equations
●Initial and boundary conditions
26 7,8 Steady-state molecular diffusion
●One dimensional mass transfer independent of chemical reaction
●Pseudo steady state diffusion
●One dimensional systems associated with chemical reactions
Exam # 1
27 9,10 Unsteady-steady state molecular diffusion
●Unsteady state diffusion and Fick ’s second law
●Transfer diffusion in a semi infinite medium
●Transfer diffusion in a finite medium under a conditions of negligible surface resistance
●Concentration time charts for simple geometric shapes
28 11,12 Convective mass transfer
●Fundamentals considerations in convective mass transfer
●Significant parameters in convective mass Transfer
●Dimensional analysis of convective mass transfer
●Exact analysis of the laminar concentration boundary layer
●Approximate analysis of the concentration boundary layer
●Mass, energy and momentum transfer analogies
Chapter Week # Topics to be covered
30 13,14 Convective mass transfer correlations
●Flat plate
●Single sphere
●Single cylinder
●Mass transfer involving flow through pipes
●Mass transfer in packed and fluidized beds Exam # 2
Final Exam
