2024/25 Undergraduate Module Catalogue

CAPE1330 Mass and Energy Balances Fundamentals

20 creditsClass Size: 150

Module manager: Dr A Borissova
Email: a.borissova@leeds.ac.uk

Taught: Semesters 1 & 2 (Sep to Jun) View Timetable

Year running 2024/25

Pre-requisite qualifications

Admission to an undergraduate programme in the School of Chemical and Process Engineering

Module replaces

CAPE1020 + part of CAPE2050

This module is not approved as a discovery module

Module summary

This module introduces you to the principles of mass and energy balances and their application to unit operations and processes. The module includes a process design project where students will apply knowledge of the chemical engineering concepts studied.

Objectives

On completion of this module, students will be able to: 

- To calculate mass flows and stream compositions using principles of mass conservation and stoichiometry.
- To solve mass balance problems with recycle, purge and bypass.
- To perform mass balance calculations for combustion processes and transient systems.
- To solve energy balance problems on non-reactive process such as drying, mixing and crystallisation.
- To apply Hess’s law for the determination of heat of reaction, heat of formation and heat of combustion.
- To solve energy balance problems on a chemical reactor using the heat of reaction and heat of formation methods.
- To apply principles of energy balance to processes involving solutions for which heats of solution are significant.
- Assess the merits of different chemical processing routes and choose a process using sound engineering judgement.
- Evaluate the economic cost and sustainability (order of magnitude estimates) of a chemical plant.

Learning outcomes
On successful completion of the module students will have demonstrated the following learning outcomes relevant to the subject:
1. Understand the principles of mass and energy balances and be able to apply them to chemical engineering problems.
2. Understand that design is an open-ended process, which requires working creatively as a team managing the processes of peer challenge and planning to make choices on the basis of incomplete information.
3. Be able to communicate effectively to present the outcomes of design, including flowsheets and stream data, and defend chosen design options and decisions taken.
4. Be able to reflect on their own work and implement strategies for personal improvement and professional development.
5. Be aware of the benefits of continuing professional development and of personal development planning.
6. Be able to work in a team and understand and manage the processes of: peer challenge; planning, prioritising and organising team activity; the discipline of mutual dependency.
7. Have a knowledge and understanding of basic mathematical models relevant to chemical engineering.
8. Understand systems thinking, including the interdependence of elements of a complex system, being able to synthesise a conceptual multi-step process and apply analysis techniques to it.
9. Be able to evaluate the effectiveness of their design, including its immediate and life cycle environmental impacts.

Skills Learning Outcomes
On successful completion of the module students will have demonstrated the following skills:
a. Communication, time management, planning & organising, teamwork.
b. Technical skills, systems thinking, information searching, academic writing.
c. Problem solving & analytical skills, critical thinking.
d. Personal/self/career management, reflection.
e. Decision-making.

Syllabus

General Balance Equation: mass and energy conservation. Degree-of-Freedom Analysis and its application to mass balances; mass balances for non-reactive systems: systems with a recycle, purge and by-pass; steady & unsteady state processes; continuous, batch and semi-batch processes. Mass balances of reactive systems; molar and atomic balances. Limiting and excess reactants. Extent of reaction. Yield and selectivity. Mass balances for reactive systems with multiple reactions; recycle, purge and by-pass; transient processes. Mass balances for combustion processes.

Energy balances: 1st law of thermodynamics, internal energy and enthalpy, heat capacity, phase change and latent heats, vaporisation and condensation (steam tables), drying (psychometric chart), mixing and solution, crystallisation, dissolution, melting & freezing.

Heat of reaction. Standard heat of reaction. Calculation of heat of reaction: from heats of formation, Hess's law. Energy balance applying heat of reaction method. Heat of formation and formation reaction. Energy balance applying heat of formation method. Energy balance applying heat of combustion method. Adiabatic temperature. Energy balance of adiabatic and neutralisation reactors. Energy balance of combustion: higher and lower heating value of fuels.

Process Design Project.


Methods of Assessment

We are currently refreshing our modules to make sure students have the best possible experience. Full assessment details for this module are not available before the start of the academic year, at which time details of the assessment(s) will be provided.

Assessment for this module will consist of;

Maximum 2 coursework
Maximum 1 exam

Teaching methods

Delivery type	Number	Length hours	Student hours
Supervision	4	1.00	4.00
Lectures	22	2.00	44.00
seminars	22	2.00	44.00
Practicals	1	2.00	2.00
Private study hours			106.00
Total Contact hours			94.00
Total hours (100hr per 10 credits)			200.00

Opportunities for Formative Feedback

Opportunities for formative feedback include in-class discussions, polling/quizzes during lectures, tutorial problems and consultancy sessions.

Reading list

The reading list is available from the Library website

Last updated: 22/08/2024

Disclaimer

Browse Other Catalogues

• Undergraduate module catalogue
• Taught Postgraduate module catalogue
• Undergraduate programme catalogue
• Taught Postgraduate programme catalogue

Errors, omissions, failed links etc should be notified to the Catalogue Team.PROD