UEE11 Electrotechnology. Training Package. UEENEEJ104A Establish the Basic Operating Conditions of Air Conditioning Systems SAMPLE

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1 UEE11 Electrotechnology Training Package UEENEEJ104A Establish the Basic Operating Conditions of Air Conditioning Systems Learner Resource Manual Version 1 Training and Education Support Industry Skills Unit Meadowbank Product Code: 5626

2 Table of Contents Introduction... 5 Section 1 The air conditioning industry... 7 Skill practice 1.1: Identifying Air Conditioning systems Section 2 Temperature and relative humidity measuring devices...19 Skill practice 2.1: Measuring temperatures of specific areas, and work out the relative humidity Section 3 Air velocity measuring devices Skill practice 3.1: Measuring air velocities from grilles Section 4 Psychrometrics Skill practice 4.1: Reading values from a psychrometric chart Section 5 Basic air conditioning processes Skill Practice Air Conditioning processes Section 6 Ventilation Skill Practice Ventilation Section 7 Regulations Skill practice 7.1: Calculate the fresh air requirements Section 8 Heat loads Skill Practice 8.1: Heat Load Estimation (Quick selection charts) Skill Practice 8.2 Heat Load Estimation (Industry check figures) Sample Assessments A. Sample theory test C. Sample theory test Answers Review questions Sample Theory test Sample Theory test TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012

3 Section 1 The air conditioning industry Purpose In this section you will learn about the various areas of specialisation in the air conditioning industry. Many air conditioning mechanics and technicians will only ever work in one of these specialised areas throughout their working lives. Topics Industry classifications (domestic, commercial, industrial and transport) Applications (shopping centres, housing, offices) and typical equipment used in each classification (split systems, central plant, chemical production, etc.) Learning Objectives At the end of this section you should be able to: Describe the distinguishing features of the four main classifications of air conditioning Systems, that is domestic, commercial, industrial and transport List applications within each of these classifications Provide examples of the main features of some of the equipment used in each application. References The following references will be of assistance with this section: ARAC, 4th Edition, Volume 2, Chapter 20, Self contained air conditioning systems. Learner Exercises Skill Practice 1.1: Identifying Air Conditioning systems TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012 Page 7 of 140

1.1 Types and uses of air conditioning Reference: ARAC, 4th Edition, Volume 2, Chapter 20 The main types of air conditioning and their uses are listed below: Room air conditioners (RACs) are used

4 1.1 Types and uses of air conditioning Reference: ARAC, 4th Edition, Volume 2, Chapter 20 The main types of air conditioning and their uses are listed below: Room air conditioners (RACs) are used mainly in single rooms in domestic areas or small offices for comfort conditions. They are unique in that they have an in built fresh air intake. This means that they automatically introduce some fresh air into the conditioned space whenever they are running. Room air conditioner (RAC) Split system air conditioners are used in single rooms or groups of rooms, mainly for domestic and small office use to create comfort conditions. Split system air conditioner Page 8 of 140 TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012

Packaged air conditioner Heat pump reverse cycle air conditioners are a variation where the refrigeration system is

5 Packaged air conditioners are used in larger spaces, e.g. restaurants and offices. With a tighter control system, they can be used in industrial areas or for comfort conditions. Packaged air conditioner Heat pump reverse cycle air conditioners are a variation where the refrigeration system is used for heating, for all applications listed above. Heat pump reverse cycle air conditioner TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012 Page 9 of 140

Chiller set and direct expansion are used in large commercial office spaces and industrial areas, e.g. operating theatres, chocolate factories, art galleries for comfort and industrial conditions.

6 Chiller set and direct expansion are used in large commercial office spaces and industrial areas, e.g. operating theatres, chocolate factories, art galleries for comfort and industrial conditions. Chiller set and direct expansion system Evaporative coolers are used in areas with a low moisture content in the air. Evaporative cooler Page 10 of 140 TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012

7 Skill practice 1.1: Identifying Air Conditioning systems. Task Identify systems from the four main classifications of air conditioners Objectives At the completion of this skill practice, you should be able to: Describe the features of systems form the four main areas of air conditioners List applications for these systems Planning the Skill Practice Equipment Various systems within the workshop or college. Safety Remember: Work safely at all times. Observe correct isolation procedures. Equipment can start without warning - be careful when working near operating machinery. Risk Assessment Identify any hazards, list the supervision level (D, G or B), list the risk class (A, B or C) and list control measures required in the table below: Hazard Identification Supervision Level Risk Class Control Measures TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012 Page 11 of 140

8 Carrying Out the Skill Practice Procedures Identifying the various types of systems in the workshop. System 1 Features Application/s System 2 Features Application/s Page 12 of 140 TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012

9 System 3 Features Application/s System 4 Features Application/s TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012 Page 13 of 140

10 Completion of the Skill Practice 1. List and describe any safety hazards which were arose during the skill practice that were NOT identified during the risk assessment and the actions used to control the risk. 2. List and describe any unforeseen event that occurred during the skill practice. 3. Describe the key points you have learnt while carrying out this skill practice. Page 14 of 140 TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012

11 Review questions These questions will help you revise what you have learnt in this topic. 1. What are the four major classifications of equipment in the Air Conditioning industry? (a) (b) (c) (d) 2. What are the major uses for a room air conditioner type system? (a) (b) 3. List an advantage of the room air conditioner type system that is not a feature of any other type of air conditioning system. 4. List a disadvantage of the room air conditioner type system. 5. List a use for the split system type of air conditioner. TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012 Page 15 of 140

12 6. What is the most common problem of a zoned split ducted system when it is used in a domestic application? 7. What is the major advantage of a packaged unit? 8. What is a typical use for a chiller set and direct expansion system? 9. When is it sensible to use an Evaporative Cooler? 10. Match the terms below listed with the correct definitions A-J by putting the matching letter in the box. Psychrometric Metabolic rate Occupied zone Standard air conditions Ventilation Comfort conditions Return air Supply air Fresh air Air conditioning Page 16 of 140 TAFE NSW (Training & Education Support, Industry Skills Unit Meadowbank) 2012

UEE11 Electrotechnology. Training Package. UEENEEJ108A Recover, pressure test, evacuate, charge and leak test refrigerants SAMPLE.

UEE11 Electrotechnology. Training Package. UEENEEJ108A Recover, pressure test, evacuate, charge and leak test refrigerants SAMPLE. UEE11 Electrotechnology Training Package UEENEEJ108A Recover, pressure test, evacuate, charge and leak test refrigerants Learner Workbook Version 1 Training and Education Support Industry Skills Unit Meadowbank