# ENRG07025 2020 Energy Systems 2

### General Details

Full Title
Energy Systems 2
Transcript Title
Energy Systems 2
Code
ENRG07025
Attendance
N/A %
Subject Area
ENRG - Energy
Department
MEMA - Mech and Manufact Eng
Level
07 - NFQ Level 7
Credit
05 - 05 Credits
Duration
Semester
Fee
Start Term
2020 - Full Academic Year 2020-21
End Term
9999 - The End of Time
Author(s)
Gerard McGranaghan, Declan Sheridan
Programme Membership
SG_EMECH_H08 202000 Bachelor of Engineering (Honours) in Mechanical Engineering
Description

Energy Systems 2 is a continuation from Energy Systems 1, again focused on Thermodynamics and Fluid Mechanics.

Fluid mechanics will treat topics such as: (i) equations of state, conservation of energy, determining fluid properties from tables, diagrams, analysis of closed systems and steady-flow. (ii) Turbo machinery such as pumps and turbines,  (iii) Lift and drag, bluff bodies, airfoils and other related applications.  (iv) Fundamental physical variables, dimensionless quantities (e.g. Re), dimensional analysis to solve problems in fluid mechanics

The thermodynamics section will cover: (i) Perfect (Carnot) and ideal (Rankine/Otto) cycles, (ii) practical conduction problems involving multiple materials, thermal resistance, contact resistance, and using insulation, (iii) Heat transfer in forced convection, including laminar and turbulent flows, in various engineering scenarios and for a range of geometries, internal and external. (iv) Natural or free convection, the governing Dimensionless numbers, and related equations and correlations.

### Learning Outcomes

On completion of this module the learner will/should be able to;

1.

Evaluate fluid properties and solve basic problems using property tables, property diagrams, equations of state and be able to use this knowledge to analyse practical closed systems and steady-flow devices in conjunction with the conservation of energy principle.

2.

Derive, quantify and formulate problems involving turbo machinery. Apply principles to solving problems involving the same.

3.

Derive, quantify and formulate problems involving lift and drag around bodies, airfoils and other related applications. Apply principles to solving problems involving the same

4.

Define the fundamental physical variables of fluid mechanics and associated dimensionless quantities (e.g. Reynolds number), and further apply dimensional analysis to problems in fluid mechanics

5.

Determine values for pressure, temperature, and volume, plus cycle efficiency for perfect (Carnot) and ideal (Rankine/Otto/Diesel/Dual) gas power cycles.

6.

Solve practical conduction problems involving multiple materials using thermal resistance, U-values, contact resistance, and the critical radius of insulation.

7.

Solve basic problems in forced convection, using knowledge of laminar and turbulent flows, entrance region and fully developed flow, flow across flat plates, cylinders in cross flow, tube arrays.

8.

Analyse free convection using knowledge of buoyancy, velocity and thermal boundary layers, relevant dimensionless numbers, and governing equations and correlations.

### Teaching and Learning Strategies

The course will be delivered primarily by lecture where key concepts will be explained and followed through with graded exercises leading on to practical problem examples. Repetitive (property and steam tables, interpolations) exercises will be supplemented on Moodle outside of class to ensure student fluency and proficiency. Two mini-assignment or projects comprising an industrial design brief for a fluidic and a thermal application will form self-learning components of the module.

### Module Assessment Strategies

This subject will be assessed by two midterm projects and end of term assessment.

### Repeat Assessments

Repeat assessment will be by way of sitting another examination on the subject. Alternatively, at the discretion of the lecturer, assignments covering the deficient areas of the course may be set.

### Indicative Syllabus

• Conduction: practical conduction and insulation issues, thermal resistance, the composite wall, contact resistance, radial conduction, critical radius of insulation.
• Fundamentals of natural convection: density and buoyancy, Grashof Number, Prandtl No. velocity, laminar and turbulent flows, thermal boundary layers, governing equations and related correlations, Reynolds analogy.
• Fundamentals of forced convection: Velocity and thermal boundary layers, governing equations and related correlations, Nusselt No., internal and external flows, Laminar, turbulent and separated flows; flat plates, cylinders in cross flow, tube arrays, jet impingement, entrance region and fully developed flow, flow in pipes and ducts.
• Fundamentals of lift and drag, basics of Aerodynamics related to vehicles, aircraft.
• The airfoil, terminology, stall, lift generation, Angle of Attack, Principles of flight
• Dimensional Analysis and modelling
• Flow over bluff bodies, turbulence, formation of eddies, vortices, Karman vortex streets

Lab Classes

Wind tunnel, airfoils, heat flow through a solid, heat flow through fluids

### Coursework & Assessment Breakdown

Coursework & Continuous Assessment
30 %
End of Semester / Year Formal Exam
70 %

### Coursework Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Mini Assignments Continuous Assessment Assignment 30 % OnGoing 1,2,3,4,5,6,7,8

### End of Semester / Year Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Final exam Final Exam Closed Book Exam 70 % End of Term 1,2,3,4,5,6,7,8

Type Location Description Hours Frequency Avg Workload
Lecture Flat Classroom Lecture 4 Weekly 4.00
Laboratory Practical Engineering Laboratory Practical Laboratory Class 1 Weekly 1.00
Total Full Time Average Weekly Learner Contact Time 5.00 Hours

### Required & Recommended Book List

20/10/2020 Thermodynamics An Engineering Approach McGraw Hill
ISBN 1259822672 ISBN-13 9781259822674
2006-04-07 Introduction to Heat Transfer Wiley
ISBN 0471457272 ISBN-13 9780471457275

Noted for its readability, comprehensiveness and relevancy, the new fifth edition of this bestselling book provides readers with an accessible examination of the heat transfer field. Theyll gain a better understanding of the terminology and physical principles for any process or system involving heat transfer. And theyll find out how to develop representative models of real processes and systems, and draw conclusions concerning process/systems design or performance from the attendant analysis.

2019 Fundamentals of Thermodynamics
ISBN 1119494966 ISBN-13 9781119494966