Secondary School Entrepreneurship Curriculum. SS 2 Refrigeration and Air Conditioning Scheme of Work Federal –Schemeofwork.com
REFRIGERATION AND AIR CONDITIONING SS2 FIRST TERM
WEEK | TOPIC / CONTENT | ACTIVITIES |
1 | Energy Meaning of internal energy | Teacher explain the meaning of internal energy while student participates actively in the discussion. |
2 | Energy Enthalpy of fluid substances, its pressure, volume and temperature of internal energy | Teacher state the properties of fluid substances while students participates |
3 | Energy The P-h diagram of refrigerants | The teacher plot and explain enthalpy and P-h chart for the students |
4 | Power Meaning of power | The teacher explain meaning of power and state its unit |
5 | Power Calculation of power used by compressor | The teacher illustrates how power consumed by a compressor can be calculated from the formula i.e (P) = mass flow rate enthalpy (h) outlet enthalpy intet |
6 | Power The unit of power and heat e.g. watts, killo watts joules, kilojoules etc | Students to calculate power consumed by a compressor. |
7 | International practical temperature and pressure values The boiling point of oxygen\ 18297 C, triple point of water –0.01 C, boiling point of water – 100 C, boiling point of silver – 960.80 C, boiling point of gold – 1063 C | The teacher explain the need for standardized temperature and pressure values of silver, gold, water etc. while the students participate actively in the discussion |
8 | International practical temperature and pressure values Uses of suction and high pressure gauges | The teacher demonstrates how suction and high pressure gauges are used to determine performances of refrigerants |
9 | Air conditioning process Psychometric properties of air | The teacher explains psychometric properties of air i.e heating, cooling etc, while the students take note of the correct sequence |
10 | Air conditioning process The process of air conditioning e.g heating , cooling etc | The teacher explains psychometric properties of air i.e heating, cooling etc, while the students take note of the correct sequence |
11 | Air conditioning process Latent and sensible heat, saturated and superheated vapour | The teacher explain the latent heat, saturated air etc while the students read properties diagram |
12 | Air conditioning process Psychometric properties diagram | The teacher illustrate the reading of a property diagram to the student |
13 – 14 | Revision and exams | Revision and exams |
Secondary School Entrepreneurship Curriculum. SS 2 Refrigeration and Air Conditioning Scheme of Work Federal –Schemeofwork.com
REFRIGERATION AND AIR CONDITIONING SS2 SECOND TERM
WEEK | TOPIC / CONTENT | ACTIVITIES |
1 | Refrigerant flow controls Types of refrigerant flow control | Teacher list and explain different types of flow controls for the students to identify |
2 | Refrigerant flow controls Construction of refrigerant flow control e.g. thermostatic Ex valveautomatic Ex valvecapillary tube | The teacher describe the construction of refrigerant flow controls while students note the constructional details |
3 | Refrigerant flow controls Construction of refrigerant flow control e.g manually operated valvelow side float valvehigh side float valve. | The teacher describe the construction of refrigerant flow controls while students note the constructional details |
4 | Refrigerant flow controls Operating / working principles of refrigerant flow control | Explain the operation of the refrigerant flow controls while the students notes the sequence |
5 | Refrigerant flow controls Installation and service procedures. | The teacher demonstrate the installation and the services procedures |
6 | Evaporators and condenser Design and construction of evaporators and condensers. | The teacher demonstrate the design and construction of evaporators |
7 | Evaporators and condenser Heat load estimation of evaporators and condensers | The teacher demonstrates the design and construction of evaporators |
8 | Evaporators and condenser Estimation of diameter and length of refrigeration piping | The teacher explain the estimation of diameter and length of refrigeration piping to the students to note |
9 | Evaporators and condenser Servicing procedure for evaporators and condensers | The teacher demonstrate how to service evaporators and condensers with the appropriate tools and equipment |
10 | Piping, ducting and trucking Piping condenser and evaporators | The teacher explain the concept piping, ducting and trucking and their advantages listing tools for the work |
11 – 12 | Revision and exams | Revision and exams |
Secondary School Entrepreneurship Curriculum. SS 2 Refrigeration and Air Conditioning Scheme of Work Federal –Schemeofwork.com
REFRIGERATION AND AIR CONDITIONING SS 2 THIRD TERM
WEEK | TOPIC / CONTENT | ACTIVITIES |
1 | Piping, ducting and trucking Piping of condenser and evaporators | The teacher demonstrate piping of refrigerators and air conditioners |
2 | Piping, ducting and trucking Ducting or trucking installation of the air conditioner | The teacher demonstrate trucking and ducting in air conditioner installation |
3 | Piping, ducting and trucking Piping, ducting and trucking tools | Teacher list the tools for piping, ducting and trucking and their uses for students |
4 | Insulation of air condition and refrigeration The need for insulation of refrigeration and air conditioning systems. | Teacher explains the need for installation of refrigeration and air conditioning system |
5 | Insulation of air condition and refrigeration Types and function of insulating materials e.g. glass, rock, slag, ceramic, wool cork etc. | The teacher identifies insulating materials for the selection of the students |
6 | Installation of air condition and refrigeration Properties of insulating materials. | The teacher states the different insulating materials for students to identify |
7 | Insulation of air condition and refrigeration Procedures for insulating refrigeration and air conditioning systems. | The teacher demonstrate the procedures for installation of refrigeration and air conditioning systems for the students to practicalize on an existing system unit |
8 | Fault diagnosis and troubleshooting Different method of diagnosing fault systematictrial and errorobservation | The teacher to explain the different methods while students participate actively |
9 | Fault diagnosis and troubleshooting Common faults on refrigeration and air conditioning e.g leakage dead system, dead compressor, ineffective cooling, electric shock etc. | Teacher demonstrate techniques for carrying out repairs in the system for students to effect repairs on a system |
10 | Fault diagnosis and troubleshooting Techniques of effecting repairs in refrigeration and air conditioner unit. | Teacher demonstrate techniques in fault finding in a unit (trouble shooting) |
11 | Fault diagnosis and troubleshooting Techniques for trouble shooting in a given system. | Teacher demonstrate techniques in fault finding in a unit (trouble shooting) |
12 – 13 | Revision and examination | Revision and examination |