Introduction to Transport Phenomena

Overview

The hours allocated here include problem classes as required per section:

Basics of Heat and Mass Transfer (18 hours):
1. Introduction to transport phenomena;
2. Links between heat, mass and momentum transport.

3. Mass Transfer
a. Introduction to mass transfer;
b. Molecular and convective diffusion – Fick’s law;
c. Unimolecular diffusion;
d. Equimolar counter diffusion;
e. Non-equimolar counter diffusion;
f. Liquid-liquid diffusion.

4. Heat Transfer
a. Basics of heat transfers by conduction and convection;
b. Thermal resistance networks;
c. Critical and economic thickness of insulation;
d. Heat generation from solids;
e. Heat exchanger design (Condensers, vaporisers, multipass exchangers).
f. Emission and absorption of radiation.
g. Definitions and laws of radiation.
h. Photon gas
i. Blackbody and real surface radiation.
j. Effects of incident radiation - absorptivity, reflectivity and transmissivity.
k. Radiative shape factors for simple and complex geometries.
l. Radiation between surfaces – relations between radiative shape factors.
m. Surface energy balance for opaque material – irradiation and radiosity.
n. Radiation between non-black surfaces, electrical analogies.
o. Insulated surfaces, surfaces with large areas infinite parallel surfaces


Class test (1 x2 Hours):
* Class tests constitute part of the continual assessment.
* 1 2-hour class (a total of 20% of the module mark) will take place during the module (as shown below). The content of the class tests will be communicated in class

Learning Objectives

On completion of this module a learner should be able to:
* Perform basic heat transfer calculations for heat transfer by conduction and convection and produce a thermal resistance network for mixed heat transfer and calculate individual and total resistances and heat transfer rates;
* Design a basic heat exchanger (condensers, vaporisers, multipass exchangers);
* Obtain maximum and surface temperature in the case of heat generation in solids
* Determine concentration profiles in mass transfer by diffusion;
These learning outcomes align with the following AHEP4 learning outcomes as outline by the IChemE:
* understand the principles of material and energy balances and be able to apply them to chemical engineering problems
* understand the principles of heat and mass transfer and application to problems involving fluids and multiple phases;

Skills

Learners are expected to demonstrate the following on completion of the module:
* The students will gain the necessary theoretical background that will allow them to carry out a design of basic unit operations.

Assessment

Assessment Profile
Element type Element weight (%)
1. Examination (2 hours) 80
2. Class Tests 20

Course Requirements:
* Examination Mark Veto at 40 %.
* Continual assessment Mark Veto 40 %.