Recent Scheme of Work on Air Conditioning And Refrigeration

Syllabus for Senior Secondary

FIRST TERM
SSS 1 SSS 2 SSS 3
WEEK 1: Revision
WEEK 1: Revision
WEEK 1: Revision
WEEK 2

Theme: Workshop Safety

Topic: Safety in the Workshop

Sub-Topic:
Content:
1. Workshop rules and regulations.
2. Safety devices and equipment.
3. Dress code in the workshop.
4. Accident prevention techniques.
WEEK 2

Theme: Energy And Matter

Topic: Energy

Sub-Topic:
Content:
1. Meaning of internal energy
2. Enthalpy of a fluid substance, its pressure, volume, or temperature of internal energy
3. The p.h. diagram of refrigerant
WEEK 2

Theme: Temperature And Pressure

Topic: Temperature and pressure

Sub-Topic:
Content:
1. Effects of temperature, pressure ad volume in refrigeration and air-conditioning systems.
2. Gas law, Boyles law, Charles law, Dalton law of partial pressure
3. Calculations involving general gas law formulae
P1V1/T1 = P2V2/T2
4. Calculations involving Dalton law of partial pressure
P(total) = P1 + P2 + P3 + ... + Pn
P(total) = nRT/V
From the ideal gas equation, PV = nRT
5. Plotting various temperature scale
WEEK 3

Theme: Workshop Safety

Topic: Safety in the Workshop (Cont.)

Sub-Topic:
Content:
1. Workshop rules and regulations.
2. Safety devices and equipment.
3. Dress code in the workshop.
4. Accident prevention techniques.
WEEK 3

Theme: Energy And Matter

Topic: Energy (Cont.)

Sub-Topic:
Content:
1. Meaning of internal energy
2. Enthalpy of a fluid substance, its pressure, volume, or temperature of internal energy
3. The p.h. diagram of refrigerant
WEEK 3

Theme: Temperature And Pressure

Topic: Temperature and pressure (Cont.)

Sub-Topic:
Content:
1. Effects of temperature, pressure ad volume in refrigeration and air-conditioning systems.
2. Gas law, Boyles law, Charles law, Dalton law of partial pressure
3. Calculations involving general gas law formulae
P1V1/T1 = P2V2/T2
4. Calculations involving Dalton law of partial pressure
P(total) = P1 + P2 + P3 + ... + Pn
P(total) = nRT/V
From the ideal gas equation, PV = nRT
5. Plotting various temperature scale
WEEK 4

Theme: Workshop Safety

Topic: First Aid

Sub-Topic:
Content:
1. First aid material
2. Application of first aid materials.
WEEK 4

Theme: Energy And Matter

Topic: Power

Sub-Topic:
Content:
1. The meaning of power.
2. Calculation of power used by a compressor.
3. The unit of power and heat e.g. watts, kilowatts, joules, kilojoules etc.
4. Illustrates how power consumed by a compressor can be calculated from the formula power = mass flow rate (enthalpy 'h' out let - enthalpy inlet)
WEEK 4

Theme: Refrigeration And Air Conditioning System

Topic: Forms of refrigeration

Sub-Topic:
Content:
1. Types and applications of the various forms of refrigeration.
2. Principles of operation of forms of refrigeration system.
3. Function of the components and accessories ;
relays solenoid valves, capacitor, thermostat, etc of absorption refrigeration system.
WEEK 5

Theme: Workshop Safety

Topic: First Aid (Cont.)

Sub-Topic:
Content:
1. First aid material
2. Application of first aid materials.
WEEK 5

Theme: Energy And Matter

Topic: Power (Cont.)

Sub-Topic:
Content:
1. The meaning of power.
2. Calculation of power used by a compressor.
3. The unit of power and heat e.g. watts, kilowatts, joules, kilojoules etc.
4. Illustrates how power consumed by a compressor can be calculated from the formula power = mass flow rate (enthalpy 'h' out let - enthalpy inlet)
WEEK 5

Theme: Refrigeration And Air Conditioning System

Topic: Forms of refrigeration (Cont.)

Sub-Topic:
Content:
1. Types and applications of the various forms of refrigeration.
2. Principles of operation of forms of refrigeration system.
3. Function of the components and accessories ;
relays solenoid valves, capacitor, thermostat, etc of absorption refrigeration system.
WEEK 6

Theme: Energy And Matter

Topic: Energy

Sub-Topic:
Content:
Definition of energy. The process of energy conversion, e.g. electrical to mechanical; gas to vapor.
WEEK 6

Theme: Temperature And Pressure

Topic: International practical temperature and pressure values

Sub-Topic:
Content:
1. The boiling point of oxygen 182.970C, triple point of water 0.01°C and boiling point of water 100°C, boiling point of silver 960.800C, boiling point of gold 1063°C.
2. Uses of suction and high pressure gauges
WEEK 6

Theme: Refrigeration And Air Conditioning System

Topic: Forms of refrigeration (Cont.)

Sub-Topic:
Content:
1. Types and applications of the various forms of refrigeration.
2. Principles of operation of forms of refrigeration system.
3. Function of the components and accessories ;
relays solenoid valves, capacitor, thermostat, etc of absorption refrigeration system.
WEEK 7

Theme: Energy And Matter

Topic: Energy (Cont.)

Sub-Topic:
Content:
Definition of energy. The process of energy conversion, e.g. electrical to mechanical; gas to vapor.
WEEK 7

Theme: Temperature And Pressure

Topic: International practical temperature and pressure values (Cont.)

Sub-Topic:
Content:
1. The boiling point of oxygen 182.970C, triple point of water 0.01°C and boiling point of water 100°C, boiling point of silver 960.800C, boiling point of gold 1063°C.
2. Uses of suction and high pressure gauges
WEEK 7

Theme: Compressors And Evaporators

Topic: Liquid receiver and service valve

Sub-Topic:
Content:
1. Types, purpose and functions of liquid receiver and service valves.
2. Principles of operation of liquid receiver and service valves.
3. Servicing and repair procedure for liquid receivers and service valves.
WEEK 8

Theme: Energy And Matter

Topic: Nature of Matter

Sub-Topic:
Content:
1. State of matter i.e. solid, liquid, gas and vapor etc.
2. Change of state of matter.
WEEK 8

Theme: Refrigeration And Air Conditioning System

Topic: Air conditioning processes

Sub-Topic:
Content:
1. Psychometric properties of air.
2. The processes of air conditioning: heating, cooling, etc.
3. Latent and sensible heat, saturated and super saturated vapor
4. Property diagram.
WEEK 8

Theme: Compressors And Evaporators

Topic: Liquid receiver and service valve (Cont.)

Sub-Topic:
Content:
1. Types, purpose and functions of liquid receiver and service valves.
2. Principles of operation of liquid receiver and service valves.
3. Servicing and repair procedure for liquid receivers and service valves.
WEEK 9

Theme: Energy And Matter

Topic: Nature of Matter (Cont.)

Sub-Topic:
Content:
1. State of matter i.e. solid, liquid, gas and vapour etc.
2. Change of state of matter.
WEEK 9

Theme: Refrigeration And Air Conditioning System

Topic: Air conditioning processes (Cont.)

Sub-Topic:
Content:
1. Psychometric properties of air.
2. The processes of air conditioning: heating, cooling, etc.
3. Latent and sensible heat, saturated and super saturated vapor
4. Property diagram.
WEEK 9

Theme: Compressors And Evaporators

Topic: Liquid receiver and service valve (Cont.)

Sub-Topic:
Content:
1. Types, purpose and functions of liquid receiver and service valves.
2. Principles of operation of liquid receiver and service valves.
3. Servicing and repair procedure for liquid receivers and service valves.

WEEK 10: REVISION AND EXAMININATION
WEEK 10: REVISION AND EXAMININATION
WEEK 10: REVISION AND EXAMININATION

We provide educational resources/materials, curriculum guide, syllabus, scheme of work, lesson note & plan, waec, jamb, O-level & advance level GCE lessons/tutorial classes, on various topics, subjects, career, disciplines & department etc. for all the Class of Learners

SECOND TERM
SSS 1 SSS 2 SSS 3
WEEK 1: Revision
WEEK 1: Revision
WEEK 1: Revision
WEEK 2

Theme: Temperature And Pressure

Topic: Temperature and its Measurement

Sub-Topic:
Content:
1. Concept of temperature.
2. Different types of thermometer e.g. gas, liquid, resistance, thermocouple etc.
3. Temperature scales conversion e.g. of to "C etc.
WEEK 2

Theme: Compressors And Evaporators

Topic: Refrigerant flow control

Sub-Topic:
Content:
1. Types of refrigerants flow controls.
2. Construction of refrigerant flow controls e.g TEV, AEV, Capillary Tube etc.
3. Operations of refrigerant flow control.
4. Installation and service procedures.
WEEK 2

Theme: Installation Processes

Topic: Motors and generators

Sub-Topic:
Content:
1. Types, functions, operations and application of motors and generators.
2. Installation procedures of motors and generators.
3. Maintenance of motors, and generators in refrigeration system.
WEEK 3

Theme: Temperature And Pressure

Topic: Temperature and its Measurement (Cont.)

Sub-Topic:
Content:
1. Concept of temperature.
2. Different types of thermometer e.g. gas, liquid, resistance, thermocouple etc.
3. Temperature scales conversion e.g. of to "C etc.
WEEK 3

Theme: Compressors And Evaporators

Topic: Refrigerant flow control (Cont.)

Sub-Topic:
Content:
1. Types of refrigerants flow controls.
2. Construction of refrigerant flow controls e.g TEV, AEV, Capillary Tube etc.
3. Operations of refrigerant flow control.
4. Installation and service procedures.
WEEK 3

Theme: Installation Processes

Topic: Cold room

Sub-Topic:
Content:
1. Working principles of a cold room.
2. Cold room installation procedures.
3. Space cooling load.
4. Factors affecting cold room operations
WEEK 4

Theme: Temperature And Pressure

Topic: Pressure and its Measurement

Sub-Topic:
Content:
1. Concept of pressure.
2. Different types of pressure measuring devices e.g barometer and their uses.
3. Pressure measurement.
WEEK 4

Theme: Compressors And Evaporators

Topic: Evaporators and condensers

Sub-Topic:
Content:
1. Design and construction of evaporators.
2. Heat load estimates on evaporators and condensers.
3. Estimate of diameter and length of refrigeration piping.
4. Servicing procedure for evaporators.
WEEK 4

Theme: Workshop Practice

Topic: Maintenance and testing

Sub-Topic:
Content:
1. Testing for: Leakages Polarity Insulation Continuity Pressure Efficiency
2. Maintenance of compressors, evaporators, motors, condensers, valves, accumulators, contactors, etc.
WEEK 5

Theme: Temperature And Pressure

Topic: Pressure and its Measurement (Cont.)

Sub-Topic:
Content:
1. Concept of pressure.
2. Different types of pressure measuring devices e.g barometer and their uses.
3. Pressure measurement.
WEEK 5

Theme: Compressors And Evaporators

Topic: Evaporators and condensers (Cont.)

Sub-Topic:
Content:
1. Design and construction of evaporators.
2. Heat load estimates on evaporators and condensers.
3. Estimate of diameter and length of refrigeration piping.
4. Servicing procedure for evaporators.
WEEK 5

Theme: Workshop Practice

Topic: Business concepts

Sub-Topic:
Content:
1. Nature of business
2. Sources of finance: loan, mortgage, shares, overdrafts, savings.
3. Sole proprietorship, partnership, limited liability etc.
WEEK 6

Theme: Refridgement And Air Conditioning Systems

Topic: Introduction to Refrigeration

Sub-Topic:
Content:
1. Refrigeration cycle :
• Evaporation,
• Compression,
• Condensation,
• Expansion
2. Layout diagrams of refrigeration systems.
WEEK 6

Theme: Installation Process

Topic: Piping, Ducting and Trucking

Sub-Topic:
Content:
1. Concept of piping, ducting and trucking.
2. Piping a condenser and an evaporator.
3. Ducting or trucking installation of air conditioners.
4. Piping, ducting and trucking tools.
WEEK 6

Theme: Workshop Practice

Topic: Business concepts (Cont.)

Sub-Topic:
Content:
1. Nature of business
2. Sources of finance: loan, mortgage, shares, overdrafts, savings.
3. Sole proprietorship, partnership, limited liability etc.
WEEK 7

Theme: Refridgement And Air Conditioning Systems

Topic: Introduction to Refrigeration (Cont.)

Sub-Topic:
Content:
1. Refrigeration cycle :
• Evaporation,
• Compression,
• Condensation,
• Expansion
2. Layout diagrams of refrigeration systems.
WEEK 7

Theme: Installation Process

Topic: Piping, Ducting and Trucking (Cont.)

Sub-Topic:
Content:
1. Concept of piping, ducting and trucking.
2. Piping a condenser and an evaporator.
3. Ducting or trucking installation of air conditioners.
4. Piping, ducting and trucking tools.
WEEK 7

Theme: Entrepreneurship

Topic: Marketing

Sub-Topic:
Content:
1. Types, functions of marketing styles.
2. Meaningful marketing at the least cost.
3. Marketing protocol and cost
WEEK 8

Theme: Refridgement And Air Conditioning Systems

Topic: Refrigerants

Sub-Topic:
Content:
1. Definition of refrigerant
2. Types of refrigerants.
3. Chemical name and formulae.
4. Properties of refrigerants.
5. Uses of refrigerants.
WEEK 8

Theme: Installation Process

Topic: Piping, Ducting and Trucking (Cont.)

Sub-Topic:
Content:
1. Concept of piping, ducting and trucking.
2. Piping a condenser and an evaporator.
3. Ducting or trucking installation of air conditioners.
4. Piping, ducting and trucking tools.
WEEK 8

Theme: Entrepreneurship

Topic: Accounting

Sub-Topic:
Content:
1. Principles of Accounting
2. The Concept of business as a separate entity
3. Ledger, trial balance and balance sheet
WEEK 9

Theme: Refridgement And Air Conditioning Systems

Topic: Refrigerants (Cont.)

Sub-Topic:
Content:
1. Definition of refrigerant
2. Types of refrigerants.
3. Chemical name and formulae.
4. Properties of refrigerants.
5. Uses of refrigerants.
WEEK 9

Theme: Installation Process

Topic: Piping, Ducting and Trucking (Cont.)

Sub-Topic:
Content:
1. Concept of piping, ducting and trucking.
2. Piping a condenser and an evaporator.
3. Ducting or trucking installation of air conditioners.
4. Piping, ducting and trucking tools.
WEEK 9

Theme: Entrepreneurship

Topic: Accounting (Cont.)

Sub-Topic:
Content:
1. Principles of Accounting
2. The Concept of business as a separate entity
3. Ledger, trial balance and balance sheet

WEEK 10: REVISION AND EXAMININATION
WEEK 10: REVISION AND EXAMININATION
WEEK 10: REVISION AND EXAMININATION

We provide educational resources/materials, curriculum guide, syllabus, scheme of work, lesson note & plan, waec, jamb, O-level & advance level GCE lessons/tutorial classes, on various topics, subjects, career, disciplines & department etc. for all the Class of Learners

THIRD TERM
SSS 1 SSS 2 SSS 3
WEEK 1: Revision
WEEK 1: Revision
WEEK 1: Revision
WEEK 2

Theme: Compressors And Evaporators

Topic: Compressors

Sub-Topic:
Content:
1. Types of compressors.
2. Construction of compressors.
3. Working principles of compressors.
WEEK 2

Theme: Insulation Processes

Topic: Insulation of air condition and refrigeration system

Sub-Topic:
Content:
1. The need for insulation of refrigeration and air-conditioning systems.
2. Types and functions of insulating materials, e.g Glass, rock, slag, wood, ceramic etc.
3. Properties of insulation materials.
4. Procedure for insulating refrigeration and air conditioner systems.
WEEK 2

Theme:

Topic:

Sub-Topic:
Content:
WEEK 3

Theme: Compressors And Evaporators

Topic: Compressors (Cont.)

Sub-Topic:
Content:
1. Types of compressors.
2. Construction of compressors.
3. Working principles of compressors.
WEEK 3

Theme: Insulation Processes

Topic: Insulation of air condition and refrigeration system (Cont.)

Sub-Topic:
Content:
1. The need for insulation of refrigeration and air-conditioning systems.
2. Types and functions of insulating materials, e.g Glass, rock, slag, wood, ceramic etc.
3. Properties of insulation materials.
4. Procedure for insulating refrigeration and air conditioner systems.
WEEK 3

Theme:

Topic:

Sub-Topic:
Content:
WEEK 4

Theme: Compressors And Evaporators

Topic: Evaporators

Sub-Topic:
Content:
1. Types of evaporators.
2. Construction of evaporators.
3. Working principles of evaporators.
WEEK 4

Theme: Insulation Processes

Topic: Insulation of air condition and refrigeration system (Cont.)

Sub-Topic:
Content:
1. The need for insulation of refrigeration and air-conditioning systems.
2. Types and functions of insulating materials, e.g Glass, rock, slag, wood, ceramic etc.
3. Properties of insulation materials.
4. Procedure for insulating refrigeration and air conditioner systems.
WEEK 4

Theme:

Topic:

Sub-Topic:
Content:
WEEK 5

Theme: Compressors And Evaporators

Topic: Evaporators (Cont.)

Sub-Topic:
Content:
1. Types of evaporators.
2. Construction of evaporators.
3. Working principles of evaporators.
WEEK 5

Theme: Insulation Processes

Topic: Insulation of air condition and refrigeration system (Cont.)

Sub-Topic:
Content:
1. The need for insulation of refrigeration and air-conditioning systems.
2. Types and functions of insulating materials, e.g Glass, rock, slag, wood, ceramic etc.
3. Properties of insulation materials.
4. Procedure for insulating refrigeration and air conditioner systems.
WEEK 5

Theme:

Topic:

Sub-Topic:
Content:
WEEK 6

Theme: Workshop Practice

Topic: Basic Tools used in Refrigeration and Air conditioning System

Sub-Topic:
Content:
Basic tools:
• Hack saw
• Coil
• Spring benders
• Reamers
• Tube cutters etc.
WEEK 6

Theme: Workshop Practice

Topic: Fault Diagnosis and troubleshooting

Sub-Topic:
Content:
1. Different methods of diagnosing fault; systematic method, trial and error, observation etc.
2. Common faults in refrigeration system and their symptom: Leakage Dead system Dead compressor Ineffective cooling Electric shock etc.
3. Techniques of effecting repairs in refrigeration and air conditioning system.
4. Techniques of trouble shooting in a given system.
WEEK 6

Theme:

Topic:

Sub-Topic:
Content:
WEEK 7

Theme: Workshop Practice

Topic: Basic Tools used in Refrigeration and Air conditioning System (Cont.)

Sub-Topic:
Content:
Basic tools:
• Hack saw
• Coil
• Spring benders
• Reamers
• Tube cutters etc.
WEEK 7

Theme: Workshop Practice

Topic: Fault Diagnosis and troubleshooting (Cont.)

Sub-Topic:
Content:
1. Different methods of diagnosing fault; systematic method, trial and error, observation etc.
2. Common faults in refrigeration system and their symptom: Leakage Dead system Dead compressor Ineffective cooling Electric shock etc.
3. Techniques of effecting repairs in refrigeration and air conditioning system.
4. Techniques of trouble shooting in a given system.
WEEK 7

Theme:

Topic:

Sub-Topic:
Content:
WEEK 8

Theme: Workshop Practice

Topic: Servicing an air conditioner

Sub-Topic:
Content:
Tools and procedures for servicing window unit air conditioner.
WEEK 8

Theme: Workshop Practice

Topic: Fault Diagnosis and troubleshooting (Cont.)

Sub-Topic:
Content:
1. Different methods of diagnosing fault; systematic method, trial and error, observation etc.
2. Common faults in refrigeration system and their symptom: Leakage Dead system Dead compressor Ineffective cooling Electric shock etc.
3. Techniques of effecting repairs in refrigeration and air conditioning system.
4. Techniques of trouble shooting in a given system.
WEEK 8

Theme:

Topic:

Sub-Topic:
Content:
WEEK 9

Theme: Workshop Practice

Topic: Servicing an air conditioner (Cont.)

Sub-Topic:
Content:
Tools and procedures for servicing window unit air conditioner.
WEEK 9

Theme: Workshop Practice

Topic: Fault Diagnosis and troubleshooting (Cont.)

Sub-Topic:
Content:
1. Different methods of diagnosing fault; systematic method, trial and error, observation etc.
2. Common faults in refrigeration system and their symptom: Leakage Dead system Dead compressor Ineffective cooling Electric shock etc.
3. Techniques of effecting repairs in refrigeration and air conditioning system.
4. Techniques of trouble shooting in a given system.
WEEK 9

Theme:

Topic:

Sub-Topic:
Content:

WEEK 10: REVISION AND EXAMININATION
WEEK 10: REVISION AND EXAMININATION
WEEK 10: REVISION AND EXAMININATION

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Facts about Teachers

● ● ● Teachers Are Great No Controversy.

● ● ● Teachers are like candles, they burn themselves to light others.

● ● ● Teachers don't teach for the money.

● ● ● Every great mind was once taught by some brilliant teachers.

● ● ● Teachers are the second parents we have.

● ● ● If you can write your name, thank your teacher.

Teaching slogans

● ● ● Until the learner learns the teacher has not taught.

● ● ● I hear and forget, I see and remember, I do and know.

● ● ● The good teacher explains. The superior teacher demonstrates. The great teacher inspires.

We provide educational resources/materials, curriculum guide, syllabus, scheme of work, lesson note & plan, waec, jamb, O-level & advance level GCE lessons/tutorial classes, on various topics, subjects, career, disciplines & department etc. for all the Class of Learners