|
| Module Availability |
Semester 2 |
|
|
| Assessment Pattern |
|
Unit(s) of Assessment
|
Weighting Towards Module Mark (%)
|
|
Examination
|
70%
|
|
Class test
|
30%
|
|
Qualifying Condition(s)
A weighted aggregate mark of 40% is required to pass the module
|
|
|
|
| Module Overview |
| This module gives a solid grounding in the aspects of heat transfer that are essential for Chemical Engineers. It covers fundamental transfer mechanisms and both transient and steady state problems. Heat exchanger design and performance calculations are thoroughly addressed, as are pipe flow problems and heat transfer coefficient evaluation. Simple radiation exchange problems are introduced. |
|
|
| Prerequisites/Co-requisites |
Normal entry requirements for degree programmes in Systems Engineering |
|
|
| Module Aims |
|
Most chemical and process engineering operations include the transfer of heat. This module will;
a) familiarise students with the mechanisms of heat transfer and with the basic approach to solving steady state and transient heat transfer problems
b) Teach performance and design calculation methods for a range of heat exchanger types.
c) Introduce heat flux calculations for conduction, convection and radiation transfer mechanisms
d) Analyse heat transfer in pipe flow
|
|
|
|
| Learning Outcomes |
|
Upon successful completion of the module you will be able to:
· Appreciate the significance of heat transfer in chemical engineering
· Understand and describe the different mechanisms of heat transfer
· Solve simple transient problems
· Solve1-dimensional conduction problems through multiple layers in plane and cylindrical geometries.
· Solve heat exchanger performance and design problems
· Appreciate the parameters that influence overall heat transfer coefficients, and determine the same from suitable correlations
· Analyse and solve axial temperature distribution for pipe flow.
· Describe the key concepts of radiative heat transfer and perform simple radiation exchange calculations.
|
|
|
|
| Module Content |
Introduction to heat transfer, temperature driving force
Setting up and solving simple transient problems
Log mean temperature concept - parallel and cross flow
Heat capacity rates, NTU, heat exchanger efficiency
Correction factor method
Overall and film heat transfer coefficients, fouling
Concept of thermal resistance and electrical analogue
Steady state heat conduction, Fourier’s law
Conduction through cylindrical layers, critical lagging thickness
Convection mechanisms, boundary layer theory
Unconfined and confined flow. Entrance lengths
Dimensionless numbers and HTC correlations
Pipe flow – constant surface temperature and constant heat flux
Radiation - mechanisms, total enclosure, basic radiation exchange calculations |
|
|
| Methods of Teaching/Learning |
Lectures with embedded tutorial examples and independent learning through tutorial problems |
|
|
| Selected Texts/Journals |
|
Essential Reading:
Holman JP, Heat Transfer, 9th ed, McGraw-Hill, 2002. (ISBN 00711 22303)
Required Reading:
Kreith F, Principles of Heat Transfer, 5th ed, PWS Publishing, 1997. (ISBN 05349 54200)
Recommended Reading:
Incropera FP & De Witt DP, Fundamentals of Heat & Mass Transfer, 2nd ed, Wiley, 1985. (ISBN 04718 25611)
McAdams WH, Heat Transmission, 3rd ed, McGraw-Hill, 1954.
|
|
|
|
| Last Updated |
|
1st October 2010
|
|
