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2010/1 Module Catalogue
 Module Code: ENG1024 Module Title: MASS AND ENERGY BALANCES
Module Provider: Civil, Chemical & Enviromental Eng Short Name: SE2103
Level: HE1 Module Co-ordinator: MILLINGTON CA Dr (C, C & E Eng)
Number of credits: 10 Number of ECTS credits: 5
Module Availability

Semester 1

Assessment Pattern

Unit(s) of Assessment
Weighting Towards Module Mark (%)
Class test
Unseen examination (2 hr)
Qualifying Condition(s) 
An overall mark of 40% is required to pass the module

Module Overview

The conservation of mass and energy are fundamentals on which chemical processes are based and being able to formulate and solve material and energy balances is an essential skill of an engineer.  This module covers the fundamental concepts used when analysing the mass and energy flows in chemical processes.




The normal entry requirements for Level 1 of the Chemical & Bio-systems Engineering and the Chemical Engineering programmes.

Module Aims

To provide students with:


·       a systematic understanding of the principles used to establish material and energy balances for chemical processes


·       a comprehensive understanding of the units and physical quantities necessary to properly define material and energy balances


·an opportunity to extensively practice the principles and techniques of solving material and energy balances in a supportive environment.



Learning Outcomes

Upon successful completion of the module you will be able to :-
·         understand the foundations of different unitary systems and fluently convert quantities between them
·         explain the Ideal Gas Laws and confidently analyse the P-V-T-mass relationships of Ideal Gas mixtures
·         use with confidence saturated vapour pressure data and Raoult’s Law and so analyse the saturation process of a gas mixture
·         confidently apply sensible heat, the energy associated with a phase change and reaction enthalpy changes to the analysis of multi-phase reacting systems  
·         understand and be able to apply Gibbs Phase Rule
·         comprehensively understand and be critically aware that mass and energy are conserved
·         confidently formulate a solution to and then solve well posed material balance problems which may involve any combination of the following: reactions, multiple phases, multiple series or parallel process units, recycle/bypass/purge using data expressed in a mixed set of units


Module Content


Definitions of relevant quantities and properties
Units, systems of units and unit conversions

Ideal gasses

Ideal gas law
Dalton's and Amagat's Law
ideal gas mixtures


Single component vapour-liquid equilibrium, ideal component phase diagram
Saturated vapour pressure, Antoine and DIPPR equations
Raoult's Law and saturation


Sensible and latent heat
Ideal component heat capacity, enthalpy and internal energy
Enthalpy of formation and reaction enthalpy

Gibb's Phase Rule 

Material balances 

Definition of a system
Basis and formulation, independent equations and variables
Strategy for solution
Balances without phase change or reaction
Balances with phase changes 1
Balances with reaction and phase change 1
Recycle, purge and bypass
Balances with recycle and purge

Methods of Teaching/Learning

36 hours of lectures/tutorials, 2 hour examination and 62 hours of independent learning.
A comprehensive set of problems will be issued but no pre-printed notes are distributed; students must make their own note during lectures

Selected Texts/Journals

Essential Reading:   None
Required Reading:
Moran MJ and Shapiro HN, Fundamentals of Engineering Thermodynamics, 3rd ed, Wiley, 1993. (ISBN 04715 92757)
Rogers GFC and Mayhew YR, Thermodynamics and Transport Properties of Fluids, 5th ed, Blackwell, 1994. (ISBN 06311 97036)
Himmelblau DM, Basic Principles and Calculations in Chemical Engineering, Vol 1, 6th ed, Prentice-Hall, 1996. (ISBN 01330 57984)
Recommended Reading:     None

Last Updated

1st October 2010