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CHEP8012 - Mass Transfer

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Title:Mass Transfer
Long Title:Mass Transfer
Module Code:CHEP8012
 
Duration:1 Semester
Credits: 5
NFQ Level:Advanced
Field of Study: Chemical & Process Eng
Valid From: Semester 1 - 2016/17 ( September 2016 )
Module Delivered in 1 programme(s)
Module Coordinator: NIALL MORRIS
Module Author: AISLING O GORMAN
Module Description: This module introduces the student to the concept of mass transfer as an integral part of chemical engineering processes.
Learning Outcomes
On successful completion of this module the learner will be able to:
LO1 Recognise and explain mass transfer concepts and terminology for fluids in laminar and turbulent flow.
LO2 Solve problems associated with mass transfer between solid and fluid phases.
LO3 Solve problems associated with mass transfer between liquid and gas phases.
LO4 Select and design equipment for use in Industrial Mass Transfer Processes.
LO5 Analyse and solve adsorption problems using solute movement analysis for linear systems.
Pre-requisite learning
Module Recommendations
This is prior learning (or a practical skill) that is strongly recommended before enrolment in this module. You may enrol in this module if you have not acquired the recommended learning but you will have considerable difficulty in passing (i.e. achieving the learning outcomes of) the module. While the prior learning is expressed as named CIT module(s) it also allows for learning (in another module or modules) which is equivalent to the learning specified in the named module(s).
None
Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. You may not earn additional credit for the same learning and therefore you may not enrol in this module if you have successfully completed any modules in the incompatible list.
None
Co-requisite Modules
No Co-requisite modules listed
Requirements

This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. You may not enrol on this module if you have not acquired the learning specified in this section.

No requirements listed
 

Module Content & Assessment

Indicative Content
1. Diffusion in Liquids and Gases:
Steady-state molecular diffusion in fluids at rest or in laminar flow; steady state diffusion through stagnant gas, steady-state equimolal counter diffusion, diffusivity of gases; worked examples; steady state diffusion through stagnant liquids, steady-state equimolal counterdiffusion, diffusivity of liquids; worked examples
2. Mass Transfer Coefficients:
F and k type coefficients and inter relationships; analytical solution to a specific problem in laminar flow; turbulent flow film theory, penetration theory, surface-renewal theory, combination film-surface-renewal theory; surface stretch theory.
3. Interphase Mass Transfer:
Equilibrium; diffusion between phases; local two-phase transfer coefficients; local overall mass transfer coefficients; average overall coefficients; material balances for steady-state co-current processes, steady-state counter-current processes; stage efficiency; worked examples.
4. Humidification and Cooling Towers:
Definitions; absolute and relative humidity; dry-bulb and wet-bulb temperatures; percentage absolute humidity; humid volume, humid heat; enthalpy; adiabatic saturation curves; cooling towers, calculation of the height of packing; humidifying towers, calculation of the height of packing.
5. Drying:
Equilibrium; batch drying, direct driers, indirect driers, freeze drying; the rate of batch drying, the mechanism of batch drying; cross-circulation drying, through-circulation drying; worked examples.
6. Leaching
Unsteady-state operation, Steady-state operation, calculation methods, worked examples
7. Gas Absorption:
Continuous contact equipment; height of Gas Transfer Unit (HtG); number of Gas transfer Units (NtG); height of an Overall Gas Transfer Unit (HtOG); relationship between HtG and HtOG; height of Liquid Transfer Unit (HtL); number of Liquid Transfer Units (NtL); height of an Overall Liquid Transfer Unit (HtOL); number of Overall Liquid Transfer Units (NtOL); relationship between HtL and HtOL; solution of problems.
8. Crystallisation
Phase equilibria, Solubility and Saturation, Crystal nucleation, growth and yield, Crystallisation from solutions, Crystallisation by Cooling, Evaporation and Vacuum. Crystallisation Equipment.
9. Adsorption
Adsorption isotherms including Langmuir Isotherm, Solute movement analysis: solute wave, thermal wave. Temperature Swing Adsorption, Pressure Swing Adsorption
Assessment Breakdown%
Course Work30.00%
End of Module Formal Examination70.00%
Course Work
Assessment Type Assessment Description Outcome addressed % of total Assessment Date
Project Design of multi-phase operations 1,2,3,4 30.0 Week 6
End of Module Formal Examination
Assessment Type Assessment Description Outcome addressed % of total Assessment Date
Formal Exam End-of-Semester Final Examination 1,2,3,5 70.0 End-of-Semester
Reassessment Requirement
Repeat examination
Reassessment of this module will consist of a repeat examination. It is possible that there will also be a requirement to be reassessed in a coursework element.

The institute reserves the right to alter the nature and timings of assessment

 

Module Workload

Workload: Full Time
Workload Type Workload Description Hours Frequency Average Weekly Learner Workload
Lecture Lecures/Class Tutorials 4.0 Every Week 4.00
Independent & Directed Learning (Non-contact) Study/Home Tutorials/Past Paper Problems 3.0 Every Week 3.00
Total Hours 7.00
Total Weekly Learner Workload 7.00
Total Weekly Contact Hours 4.00
This module has no Part Time workload.
 

Module Resources

Recommended Book Resources
  • Treybal, R.E. 1980, Mass Tranfer Operations, 3rd Edn Ed., McGraw-Hill
  • Wankat, P.C. 2011, Separation Process Engineering: Includes Mass Transfer Analysis, Third (International) Ed., Pearson [ISBN: 0132790211]
  • Richardson,J.F.,Coulson,J.M.,Backhurst,J.R.,Harker,J.H. 1999, Chemical Engineering, Volume 1, 4th Edn Ed., Butterworth-Heinemann [ISBN: 978-0-7506-44]
  • J. M. Coulson and J. F. Richardson; with J. R. Backhurst and J. H. Harker 2002, Coulson & Richardson's Chemical Engineering Volume 2, 5th Edn Ed., Butterworth Heinemann [ISBN: 978-0750644457]
  • Henley, Seader and Roper 2012, Separation Process Principles, 3rd Ed., Wiley [ISBN: 978-1-118-50656-1]
Supplementary Book Resources
  • Sherwood,T.K., Pigford, R.L.,Wilke,C.R. 1975, Mass Transfer, McGraw-Hill
This module does not have any article/paper resources
This module does not have any other resources
 

Module Delivered in

Programme Code Programme Semester Delivery
CR_ECPEN_8 Bachelor of Engineering (Honours) in Chemical and Biopharmaceutical Engineering 5 Mandatory

Cork Institute of Technology
Rossa Avenue, Bishopstown, Cork

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Email: help@cit.edu.ie