## Module and Programme Catalogue

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## CAPE2010 Engineering Science 2

### 20 creditsClass Size: 220

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

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

Year running 2017/18

### Pre-requisites

 CAPE1020 Engineering Science 1 CAPE1040 Mathematical Techniques 1

Module replaces

PEME2210 Engineering Science 2

This module is not approved as a discovery module

### Module summary

This module includes the following core chemical engineering topics: Mass and Energy Balances, Fluid Mechanics and Heat Transfer. It builds on these topics covered at an introductory level in Engineering Science 1 in Level 1.

### Objectives

- To develop a deep understanding of the concepts and methodology for performing mass and energy balance calculations for processes with chemical reactions and combustion.
- To develop a deep understanding of advanced principles of fluid mechanics and heat transfer.
- To provide a basis for the Level 3 Design Project module and Level 4 Multi-Scale Modelling and Simulation module.

Learning outcomes
On completion of this module, students should have a deep knowledge of:
- Principles for mass and energy balances and be able to apply these to write and solve mass/energy balances for processes with chemical reactions and combustion.
- Laminar flows in confined geometries (e.g. pipes, parallel plates) and with free-surface (e.g. liquid films over inclined/vertical plates).
- Main characteristics of turbulent and compressible flows in pipes.
- Pressure drop calculations in pipeline systems.
- Methodologies for pipeline and heat exchanger design.

Skills outcomes
On completion of this module, students should have the following skills:
- Pipeline design and pump calculations.
- Heat exchangers design calculations.
- Calculations of mass and energy balances with and without chemical reactions for individual process equipment and for a process plant.
- Use of spreadsheets (EXCEL) and HYSYS to solve mass and energy balances.

### Syllabus

Mass Balance
Revision: Review of principles of mass balances for non-reactive systems, process flow diagrams, systems with recycle, bypass and purge streams, Degree-of-Freedom Analysis: Process stream variables, independent equations, degrees of freedom, general procedure for mass balance calculations. Reactive Systems: Principles of stoichiometry, limiting and excess reactants, conversion, selectivity and process yield. Mass Balances for Reactive Systems: Mass balances on molecular and atomic species, independent equations, independent species, independent reactions, extent of reaction, mass balances for systems with recycle, bypass and purge streams, mass balances for combustion processes - calculation of the product composition from the combustion of hydrocarbon fuels. Mass balances for batch processes.

Energy Balance
Revision: Review of principles of energy balance. Energy Balances for Reacting Systems: Thermochemistry, standard states, heats of reaction, formation and combustion, energy balances on isothermal and adiabatic chemical reactors. Calculation of flame temperatures. Energy balances for combustion equipment. Simultaneous mass and energy balances.

Fluid Mechanics
Fluid Motion: Classification of fluid flows and basic flow characteristics, review of the continuity, energy and momentum equations derived in Engineering Science 1. Laminar Flow: Flow in pipes and Hagen-Poiseuille equation, flow through ducts, flow between parallel plates and over inclined/vertical plate. Turbulent Flow: Fluctuating and mean velocity, Reynolds stresses and eddy viscosity, power-law velocity profiles, log-law of the wall. Boundary Layer Flow: Laminar/turbulent boundary layers in flow over a solid surface, boundary layer thickness, velocity distribution and shear stress. Compressible Flow: Basic characteristics, equations for isothermal/adiabatic flows in pipe.

Heat Transfer
Introduction: Review of modes of heat transfer. Convective Heat Transfer: Forced convection heat transfer in the entrance and fully developed regions of pipe, heat transfer with phase change - boiling and condensation, natural convection. Heat Exchanger Design: Classification of heat exchangers, mechanical construction, shell-and-tube heat exchanger design using LMTD and effectiveness-NTU methods, evaporative heat exchangers.

Group Project
A group design project requiring mass and energy balances and pipeline (including pumps) and heat exchanger sizing calculations for a simplified process plant. Use of spreadsheets (EXCEL) and HYSYS to solve mass and energy balances.

### Teaching methods

Due to COVID-19, teaching and assessment activities are being kept under review - see module enrolment pages for information

 Delivery type Number Length hours Student hours Group Project 8 1.00 8.00 Class tests, exams and assessment 2 2.00 4.00 Class tests, exams and assessment 4 1.00 4.00 Group learning 18 1.00 18.00 Lecture 44 1.00 44.00 Tutorial 22 1.00 22.00 Private study hours 100.00 Total Contact hours 100.00 Total hours (100hr per 10 credits) 200.00

### Private study

Students are expected to read the recommended textbooks together with the lecture handouts for developing a deeper understanding of the topics covered in the formal classes. They should look at the worked out example problems in textbooks and in handouts to learn how theory can be applied to solve numerical problems. To develop problem solving skills they should independently try to solve the numerical problems given in the Problem Sheets provided by the lecturers and also textbook exercise problems prior to the tutorial class. As part of a group (18 hours) and independent learning, students are expected to carry out calculations for the Group Project.

### Opportunities for Formative Feedback

Students' progress will be monitored via:
- The extent of participation and response to questions asked in the formal lecture and tutorial classes.
- The attendance in lecture and tutorial classes and in group tutorials.
- The performance in class tests and examinations.

### Methods of assessment

Due to COVID-19, teaching and assessment activities are being kept under review - see module enrolment pages for information

Coursework
 Assessment type Notes % of formal assessment Group Project 30 pages maximum 20.00 In-course Assessment 4 class tests 0.00 Total percentage (Assessment Coursework) 20.00

Resits will be assessed by a 3 hour examination

Exams
 Exam type Exam duration % of formal assessment Unseen exam 2 hr 40.00 Unseen exam 2 hr 40.00 Total percentage (Assessment Exams) 80.00

Resits will be assessed by a 3 hour examination

The reading list is available from the Library website

Last updated: 26/04/2017

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