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MECH5255: Air Conditioning and Refrigeration (2019 - Semester 2)

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Unit: MECH5255: Air Conditioning and Refrigeration (6 CP)
Mode: Normal-Day
On Offer: Yes
Level: Postgraduate
Faculty/School: School of Aerospace, Mechanical & Mechatronic Engineering
Unit Coordinator/s: Dr Dunn, Matthew
Session options: Semester 2
Versions for this Unit:
Campus: Camperdown/Darlington
Pre-Requisites: MECH3260 OR MECH9260 OR MECH8260.
Prohibitions: MECH4255.
Brief Handbook Description: This unit of study develops an advanced knowledge of air conditioning systems and refrigeration applications. At the completion of this unit students will be able to determine thermal loads on structures and design an air conditioning or refrigeration system with attention to comfort, control, air distribution and energy consumption. Course content will include: applied psychrometrics, air conditioning systems, design principles, comfort in the built environment, cooling load calculations, heating load calculations, introduction and use of computer-based load estimation packages software, air distribution, fans, ducts, air conditioning controls, advanced refrigeration cycles, evaporators, condensers, cooling towers, compressors, pumps, throttling devices, piping, refrigerants, control, refrigeration equipment, simulation of refrigeration systems, food refrigeration and industrial applications; Use of CFD packages as tools to simulate flows in building and to optimise air conditioning design, energy estimation methods and software, energy evaluation and management in the built environment. Use of experimental air conditioning systems to test for thermal balances and compare with simulations.
Assumed Knowledge: Students are expected to be familiar with the basic laws of thermodynamics, fluid mechanics and heat transfer.
Timetable: MECH5255 Timetable
Time Commitment:
# Activity Name Hours per Week Sessions per Week Weeks per Semester
1 Independent Study 4.00 1 13
2 Lecture 2.00 1 13
3 Tutorial 1.00 1 13
T&L Activities: Lecture: Lectures will involve many worked examples and illustrations to highlight how the basic principles relate the theory to practical applications. Invited lecturers from industry will highlight the relevance and importance of the concepts to the real world.

Tutorial: Students should attend all lectures and tutorials. The interaction with students and the discussions that take place during these sessions will be extremely beneficial. To maximize the benefits from the tutorial classes, students should attempt the assigned problems beforehand and come to the tutorial with specific questions or queries. Practical examples and assignments will elucidate the relevance of the basic concepts with respect to engineering applications. Regular tutorial sessions will solve many examples and will give students the opportunity to catch up on applications with respect to topics covered in lectures.

Learning outcomes are the key abilities and knowledge that will be assessed in this unit. They are listed according to the course goal supported by each. See Assessment Tab for details how each outcome is assessed.

Unassigned Outcomes
1. An understanding of complex refrigeration systems.
2. An appreciation of thermal comfort in the built environment.
3. An understanding of thermal loads and energy consumption in buildings.
4. Ability to size, select and analyze air conditioning systems including estimates of heat and air flows as well as cost and energy analysis.
5. Familiarity with at least one software package used in the air conditioning industry and ability to compute total thermal loads.
6. Ability to effectively relay knowledge on group project in the form of a professional report and seminar.
7. Ability to interact with the manufacturing and consulting industry on real project related to the built environment.
8. Ability to select appropriate mathematical tools for airconditioning and refigeration analysis
9. Ability to complete a design project with open ended specifications.
Assessment Methods:
# Name Group Weight Due Week Outcomes
1 Assignment No 20.00 Multiple Weeks 1, 2, 3, 4, 5, 7, 8,
2 Project Yes 40.00 Multiple Weeks 1, 2, 3, 4, 5, 6, 7, 9,
3 Final Exam No 40.00 Exam Period 1, 2, 3, 4,
Assessment Description: Assignment: Practical examples and assignments will elucidate the relevance of the basic concepts with respect to engineering applications. The assignments and quizzes will help students absorb the concepts and stay up to date with the pace of lectures.

Project: The project report and the seminar will test the ability of students to interact in a group environment, apply the concepts to a realistic problem, and relay them effectively in the form of a seminar and report. Group projects and seminars are aspects of training that are beneficial for engineers since this is common practice in the profession. The projects are essentially emulating real job situations that graduates will face in professional practice.

Final Exam: The final examination will help evaluate the overall understanding of the concepts covered in this UoS and the student’s ability to analyze and solve related problems.
Grading:
Grade Type Description
Standards Based Assessment Final grades in this unit are awarded at levels of HD for High Distinction, DI (previously D) for Distinction, CR for Credit, PS (previously P) for Pass and FA (previously F) for Fail as defined by University of Sydney Assessment Policy. Details of the Assessment Policy are available on the Policies website at http://sydney.edu.au/policies . Standards for grades in individual assessment tasks and the summative method for obtaining a final mark in the unit will be set out in a marking guide supplied by the unit coordinator.
Policies & Procedures: See the policies page of the faculty website at http://sydney.edu.au/engineering/student-policies/ for information regarding university policies and local provisions and procedures within the Faculty of Engineering and Information Technologies.
Prescribed Text/s: Note: Students are expected to have a personal copy of all books listed.

Note that the "Weeks" referred to in this Schedule are those of the official university semester calendar https://web.timetable.usyd.edu.au/calendar.jsp

Week Description
Week 1 Fundamentals
Week 2 Psychrometrics
Week 3 Design conditions and solar loads.
Week 4 Thermal Loads.
Week 5 Fans and Compressors.
Week 6 Condensers and Evaporators.
Week 7 Air conditioning systems and energy evaluations.
Week 8 Computer simulations - Thermal loads.
Week 9 Computer simulations - Equipment Selection
Week 10 Computer simulations - Duct analysis.
Week 11 A/C Controls - Food Refrigeration.
Week 12 Computer simulations - Energy analysis.
Week 13 Project seminars by students.
Exam Period Assessment Due: Final Exam

Course Relations

The following is a list of courses which have added this Unit to their structure.

Course Year(s) Offered
Mechanical Mid-Year 2016, 2017, 2018, 2019, 2020
Mechanical/ Project Management 2019, 2020
Mechanical 2015, 2016, 2017, 2018, 2019, 2020
Mechanical / Arts 2015, 2016, 2017, 2018, 2019, 2020
Mechanical / Commerce 2015, 2016, 2017, 2018, 2019, 2020
Mechanical / Music Studies 2016, 2017
Mechanical / Project Management 2015, 2016, 2017, 2018
Mechanical / Science 2015, 2016, 2017, 2018, 2019, 2020
Mechanical/Science(Health) 2018, 2019, 2020
Mechanical / Law 2015, 2016, 2017, 2018, 2019, 2020
Mechanical (Space) 2015
Mechanical (Space) / Arts 2015
Mechanical (Space) / Commerce 2015
Mechanical (Space) / Project Management 2015
Mechanical (Space) / Science 2015
Mechanical (till 2014) 2014
Mechanical Engineering / Arts 2014
Mechanical Engineering / Commerce 2014
Mechanical Engineering / Project Management 2014
Mechanical Engineering / Science 2014
Mechanical Engineering / Law 2014
Mechanical (Space) (till 2014) 2014
Mechanical Engineering (Space) / Arts 2014
Mechanical Engineering (Space) / Project Management 2014
Mechanical Engineering (Space) / Science 2014
Master of Engineering 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Mechanical/Science (Medical Science Stream) 2018, 2019, 2020
Master of Engineering (Mechanical) 2011, 2012
Master of Professional Engineering (Accelerated) (Biomedical) 2019, 2020
Master of Professional Engineering (Accelerated) (Mechanical) 2019, 2020
Master of Professional Engineering (Biomedical) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Master of Professional Engineering (Mechanical) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Mechanical / Medical Science 2016, 2017

Course Goals

This unit contributes to the achievement of the following course goals:

Attribute Practiced Assessed
(6) Communication and Inquiry/ Research (Level 3) No 0%
(8) Professional Effectiveness and Ethical Conduct (Level 3) No 0%
(5) Interdisciplinary, Inclusiveness, Influence (Level 3) No 0%
(4) Design (Level 3) No 0%
(2) Engineering/ IT Specialisation (Level 5) No 0%
(3) Problem Solving and Inventiveness (Level 3) No 0%
(1) Maths/ Science Methods and Tools (Level 4) No 0%

These goals are selected from Engineering & IT Graduate Outcomes Table 2018 which defines overall goals for courses where this unit is primarily offered. See Engineering & IT Graduate Outcomes Table 2018 for details of the attributes and levels to be developed in the course as a whole. Percentage figures alongside each course goal provide a rough indication of their relative weighting in assessment for this unit. Note that not all goals are necessarily part of assessment. Some may be more about practice activity. See Learning outcomes for details of what is assessed in relation to each goal and Assessment for details of how the outcome is assessed. See Attributes for details of practice provided for each goal.