Course Title: Design, size and lay out heating and cooling systems

Part B: Course Detail

Teaching Period: Term2 2015

Course Code: BUIL6321C

Course Title: Design, size and lay out heating and cooling systems

School: 130T Vocational Engineering

Campus: City Campus

Program: C4338 - Certificate IV in Plumbing and Services

Course Contact: Program Manager

Course Contact Phone: +61 3 9925 4468

Course Contact Email: vocengineering@rmit.edu.au


Name and Contact Details of All Other Relevant Staff

Program Manager - Warren James
Tel: +61 3 9925 4632
Email: warren.james@rmit.edu.au

Kevin King - Teacher

99254608

kevin.king@rmit.edu.au

Nominal Hours: 160

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

Nil.

Course Description

This unit of competency specifies the outcomes required to design, size and document the layout of heating and cooling systems for multi-floor structures.
It covers preparing for the work, identifying and confirming system specifications and requirements, designing system layout, and work finalisation processes, including records and documentation.
 


National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

CPCPMS4011B Design, size and lay out heating and cooling systems

Element:

1 Prepare for design.

Element:

2 Identify system requirements.

Element:

3 Design system layout.

Element:

4 Restore work area.

Element:

1. Prepare for Design
2. Identify system requirements
3. Design system layout
4. Restore work area
 

Performance Criteria:

1.1 Nature and scope of design task are identified and confirmed.
1.2 Work health and safety (WHS) and environmental requirements planning, sizing and documenting the layout of heating and cooling systems are adhered to throughout the work.
1.3 Work is organised and sequenced in conjunction with others involved in or affected by the work.
1.4 Tools and equipment required for designing, sizing and documenting the layout of heating and cooling systems, including personal protective equipment, are selected and checked for serviceability.
1.5 Work area in which design process is to be conducted is prepared.2.1 Information and specifications for required work are obtained and confirmed, if necessary by site inspection.
2.2 Statutory and regulatory authorities’ requirements relevant to work are consulted and applied to all aspects of the work, using relevant information.
2.3 Heating and cooling requirements are determined from building drawings, plans and specifications.
2.4 Air conditioning or small bore heating system is sized to provide for required heating and cooling load and to provide required piping and ducting according to standards, and regulatory authorities’ and workplace requirements.
2.5 Sustainability principles and concepts are observed when preparing for and undertaking work process.3.1 Layout of heating and cooling system is designed according to building plans, relevant standards and workplace procedures.
3.2 Materials required are specified and optimised according to standards from the proposed design.
3.3 Plans are recorded according to regulatory authorities’ and workplace requirements.
3.1 Layout of heating and cooling system is designed according to building plans, relevant standards and workplace procedures.
3.2 Materials required are specified and optimised according to standards from the proposed design.
3.3 Plans are recorded according to regulatory authorities’ and workplace requirements.4.1 Work area is restored according to workplace procedures.
4.2 Tools and equipment used in the process are refurbished and left according to workplace procedures.
4.3 Documentation, including work backup, is completed according to workplace requirements.


Learning Outcomes


Refer to elements.


Details of Learning Activities

Learning activities include in class workbook activities and researching industry practices and standards. This may include online learning activities. Students are expected to undertake design, size and documentation to relevant industry standards to include sustainability and WHS principles.


 


Teaching Schedule

 

WEEK 1.
1.Rmit Induction Powerpoint on Q drive.
2. Handout Rmit Mechanical Services Manual.
3. Handout LLN Assessment .
4.Discussion on Reference material and standards.
5. Handout copy of the Part B course Guide
 
Week 2
1. Handout MS4011B competency booklet.

2. Discussion on the booklet explaining the assessment criteria for the Cert 4 component and also the Mechanical licence component.

3. Introduction to the HB-276-2004 Guide to Good Practice.
 

Week 3 Properties of Air
1.Specific Heat Capacity. Rmit Mechanical Services pgs 1.12-1.19.
2. Latent Heat ,Sensible Heat, kilowatt Calculations for Boilers.
3. Relative Humidity, Moisture Content,Barometric Pressure,Air changes per hour per person requirements. 10.5 – 10.10
4.Basic Psychrometry pg 10.11
1.Dry Bulb temps,Wet Bulbs temps,R.H % (relative humidity)
2.Dew Point ,Moisture Content grams/kg Dry Air.
Enthalpy ( total heat)
Psychrometric Charts 10.6.1
Plotting DB.WB.Enthalpy Moisture Content conditions .
5. Handout A3 size Psychrometric chart and students are to plot :
a. 35 celcius DB, 30 celcius WB = --------- RH%
b. 25 WB, 45% RH =------------------ DB
c. 30DB, 65% RH =----------------------WB
 
WEEK 4
Continuation of Basic Psychcrometry.

1. Plot conditions on chart with no book reference. DB,WB,RH,Enthalpy. Nominated by teacher.
2. Discuss moisture content and Specific Volume Plotting on chart. 10.6.1
3. Measuring Instruments. 10.16 – 10.26
Air :
a. Rotating Vane Anemometers, Hot wire anemometers, Pitot Tubes and Inclined Manometers, Pitot Traverse of Ductwork,positions of traverse to achieve the best readings.

b. Sling and Digital Psychrometers for measuring DB,WB,RH,DP


Water:
a. Flow meters
b. Balancing Valves(stat)
c. Orifice Plates
d. Annubars

 

Week 5

Air Velocity in Ductwork

1. HB276-2004 pg 22 6.3.1.
2. HB276 Dropper Duct pg 48
3. Flexible Duct Sizing Chart pg 23 HB276
4. Air Velocities RMIT Manual pg 12.31
5. Position of Grilles Rmit Manual pg 12.31
6. Plumbing Training Manual Air Systems pg 46

 

Week 6
Heat Transfer Principles

1. Conduction,Convection, Radiation. Definitions. Pg 7 HB-276
2. Specific Heat Capacity.
3. Thermal Conductivity.
4. Resistance.
5. Discuss What an” U” Value is and how it relates to heat load calculations. Refer to pg 12 HB-276
6. Discuss “R “values pg 8+ 9
 

Week 7
Heat Loss Calculations. Pgs 14-18 hb-276

1. Work through the example on using the house plan.

2. Handout Heat load calculation form and complete the house room x room using a different room volume than shown.( refer to teacher copy)
 

Week 8
Cooling Load Calculations.

1. Continuation of week 7 on heat loads ,discuss “Residential Air Conditioning Survey Form” pg 20.

2. Go to www.sydneyairconditioning.com.au, and using the Room Calculator,randomly check some of the rooms on pgs 16-17 and compare the results.

 

Week 9
Evaporative Cooling Design

1. Work through the example on pg 49.
2. Discuss Duct velocities.
3. Discuss Flexible duct sizing chart pg 50.
4. Discuss air changes per hour. 49

5. Design a Evap system using different room volumes and air changes per hour.

6. Supply house plan and spreadsheet.

 

Week 10
Evap Cooler Design

1. Continue on from week 9 and complete spread sheet and duct design, collect as evidence.

 

Week 11
Design Gas Ducted Heating System

1. Using the example on pg 34+35 work through the calculations shown.
2. Class to complete a design based on pg 35 ,but with different room volumes and a different air change per hour.
3. Discuss Return Air Velocities and sizing of grilles. Pg 24
4. Discuss Unit outlet sizes compared to duct sizes pg 38
5. Handout Fantech Ductulators, and discuss how to use.
6. Check Return air velocities and the dropper ducts sizes for the evap cooling system.

 

Week 12
Gas ducted Systems

1.Continue with gas ducted design.
2. Duct sizing.
3. Air velocities in ducts.
4. Positioning of floor registers.
5. Positioning of Return Air Grille.
6. Positioning of Ducted Unit.
7. Positioning of Thermostat.
Initiate class discussion on what they do in the field.


 

WEEK 13

Room Volume M/3 L/sec @7 ACH Selected Air Qty No of Outlets Duct Size Outlet Air Qty Branch Air Qty Branch Duct Size Running Air Qty Running Duct Size
Family
Meals
Living & Ent
Bed 1
Ensuite
Laundry
Bed 2
Bathroom
Bed 5
Kitchen
Bed 4
Bed 3
ReturnAir

 

Week 14
Hydronic Heating Systems

1. Discuss types of hydronic heating systems i.e. slab , panel radiators , fancoil units.
2. Read through pgs 54+55 HB276
3. Discuss the formulas for Kw and Flow rates in L/s pg 55
4. Go to Hunt Heating web site and check panel radiator sizes versus KW ratings.
 

Week 15
Hydronic Heating Design


1. Discuss flow rates, velocity in pipework, temperature difference(delta T)
2. Discuss Flow and Return water temperatures.
3. Use the example to explain calculations.
4. Use the Sydney Air Heat load Calculator to compare the Kw ratings in the example.


 

Week 16
Hydronic Heating Systems.

1. Hand out spreadsheet and house plan.
2. Discuss position of unit.
3. Discuss positions of Panel radiators.
4. Discuss thermostatic and lockshield valves.
5. Discuss flow rates versus velocity in pipework.
 

Week 17
Exam Revision
Recap on these areas.
1. M.E.P.S. (maximum energy performance scheme) check online.

2. Psychrometric Charts, wet bulb,dry bulb, relative humidity, enthalpy.
3. Chilled beams
4. Pitot tube positions in ductwork.
5. Common Duct sizing methods( licence manual)
Equal Friction,Velocity Reduction,Static Regain(Competancy Handbook) pg 16
 

Week 18
Exam Revision.

1. Mechanical Revision Exam .
2. Handout revision exam and run under exam conditions.

 

Week 19
Exam Revision.

1. Review and discuss the Revision Exam questions .
2. Discuss the 4 storey Building Assessment options,ie the ducted split systems shown on the Dunnair Handout
3. General discussion on anything covered in the course.
4. Reminder that all assignments for Cert 4 must be handed in within I week of the licence exam. ( date to be confirmed)
 

WEEK 20   EXAM NIGHT 3HRS
 


Learning Resources

Prescribed Texts

Rmit Mechanical Services Manual

There are no prescribed textbooks. Class notes (workbook) will be provided to all students enrolled in this unit.


References

AS5601.1 2014Gas Regulations. HB276-2004 Guide to Good Practice.

AS/NZ :3666 Parts 1-2-3 Air Handling and Water Systems- Microbial Control. AS/NZ : 1668 Parts 1-2-3 Use of Ventilation and Airconditioning in Buildings. AS/4524 Parts 1-2 Rigid &Flexible Duct.


Other Resources

Drawing materials, calculator and the RMIT mechanical services manual


Overview of Assessment

Assessment may incorporate a variety of methods including written/oral activities and demonstration of practical skills to the relevant industry standards. Participants are advised that they are likely to be asked to personally demonstrate their assessment activities to their teacher/assessor. Feedback will be provided throughout the course.

Students must pass each of the following assessment tasks to demonstrate competent.

 Assessment Tasks

Assessment

Task 1

Workbook Activities

Task 2

Project 1 – Design for Domestic

Task 3

Project 2 – Design for Commercial


These tasks assesses the following Course Learning Outcomes (CLOs):

Assessment Mapping Matrix

Element/

Performance Criteria Covered

Task 1

Task 2

Task 3

1.1

X

X

X

1.2

X

X

X

1.3

X

X

X

1.4

X

X

X

1.5

X

X

X

2.1

X

X

X

2.2

X

X

X

2.3

X

X

X

2.4

X

X

X

2.5

X

X

X

3.1

X

X

X

3.2

X

X

X

3.3

X

X

X

4.1

X

X

X

4.2

X

X

X

4.3

X

X

X

To be deemed competent you must demonstrate an understanding of all aspects required of the competency. Assessment methods have been designed to measure your achievement of each competency in a flexible manner over multiple tasks.


Assessment Tasks

Students are required to complete three different types of assessment tasks
1. Workbook activities as evidence of classroom participation ( 20% weighing)
2. Design project for Residential Heating and Cooling system with minimum heat load of 150 MJ/hr ( 40% weighing)
3. Design project for Commercial heating and Cooling system for at least 4 floors ( 40% weighing).

To successfully complete this unit, a student needs to be deemed competent (CA grade) in all three assessment tasks.
Grading Criteria:
NYC - Not yet competent
CA - Competence Achieved
DNS - Did not submit assessment
 


Assessment Matrix

Assessment Task                                Element/ PC                              Percentage Weighting

Workbook Activities                              Element 1-4 / 1.1 – 4.3                     20%
Project 1 – Design for Domestic        Element 1-4/ 1.1 – 4.3                     40%
Project 2 – Design for Commercial   Element 1-4/ 1.1 - 4.3                       40%
 

Other Information

Academic Misconduct

Students are reminded that cheating, whether by fabrication, falsification of data, or plagiarism, is an offence subject to University disciplinary procedures. Plagiarism in oral or written presentations is the presentation of the work, idea or creation of another person, without appropriate referencing, as though it is one’s own. Plagiarism is not acceptable.
The use of another person’s work or ideas must be acknowledged. Failure to do so may result in charges of academic misconduct which carry a range of penalties including cancellation of results and exclusion from your course.
Students are responsible for ensuring that their work is kept in a secure place. It is also a disciplinary offence for students to allow their work to be plagiarized by another student.
Students should be aware of their rights and responsibilities regarding the use of copyright material. It is strongly recommended that students refer to the Guidelines for Students at the RMIT University Homepage.
 

Course Overview: Access Course Overview