Refrigerator and Refrigeration
Course Objectives
While studying the Refrigerator and Refrigeration, the student shall be able to:
- Explains the basics of refrigeration and the types of refrigeration
- Elaborates the major components of Refrigerator
- Describes the types of refrigerants used in refrigerator
- Elaborates about the maintenance and trouble shooting of refrigerator
- Enumerates the step by step procedure of repairing and servicing of refrigerator and its parts
Course Outcomes
After completion of the Course Refrigerator and Refrigeration, the student will be able to:
- Define the laws of Thermodynamics
- Elaborate the various refrigeration cycles and the process of refrigeration
- Identify and enumerate about the major parts of refrigerator namely compressor, evaporator, condenser etc.
- List the characteristics of an ideal refrigerant
- Demonstrate the procedure of care, maintenance, repair and servicing of various parts of refrigerator
Block-1: Basics of Refrigeration
Unit-1 – Fundamentals of Refrigeration
Introduction – Basic Terminology – Thermodynamics – Laws of Thermodynamics
Unit-2: Refrigeration Cycles
Process of Refrigeration – Methods of Producing Low Temperature – Air Cycle Refrigeration – Vapour Compression Cycle of Refrigeration – Vapour Absorption Cycle
Block-2: Major Components of Refrigerator
Unit -3: Components of Refrigeration System
Compressor – Condenser – Evaporator – Expansion Devices
Unit -4: Refrigerants
Introduction – Refrigerant Criteria – Designation of Refrigerants – Types of Refrigerants – Properties of Ideal Refrigerant
Block-3: Maintenance and Trouble-Shooting of Refrigerator
Unit -5: Care and Maintenance of Refrigerator
Basic Safety Precautions – External parts of a Refrigerator – Installation Process – Refrigerator with water and Ice Dispenser – Care of Refrigerator – Maintenance of Refrigerator – Maintenance of Freezer
Unit -6: Trouble-Shooting of Refrigerator
Technical Safety – Problems of Refrigerator – Troubleshooting the Refrigerator
Block-4: Testing and Servicing of Refrigerator
Unit -7: Basic Electrical Circuits of Automobile
Testing and Replacing of the Refrigerator Parts – Servicing of Refrigerator Parts
Unit -8: Refrigerant Charging and Leakage Tests
Charging of Refrigerant – Effects of Undercharging the Refrigerant Level in refrigeration equipment – Refrigerant Leak Test
Air-Conditioner and Air-Conditioning
Course Objectives
While studying Air-Conditioner and Air-Conditioning, the student shall be able to:
- Describe the Principle of air-conditioning and the science behind air-conditioning
- Classify the air-conditioning systems and study the various components of the system
- Calculate the energy efficiency of the window and split air-conditioner
- Acquire knowledge about the tools used for copper tubing and installation of AC
- Demonstrate the duct work of AC, servicing and installation of units
Course Outcomes
After completion of the Course Air-Conditioner and Air-Conditioning, the student will be able to:
- State the need and application of air-conditioning
- Identify the major control systems of air-conditioner
- Perform Copper tubing operations including brazing
- Installation of widow and split ac, ducting work of central AC
- Perform installation, servicing and maintenance of air-conditioner
Block-1: Science of Air-Conditioning
Unit-1 – Basics of Air-conditioning
Introduction – History of Air-Conditioning – Types of System – Need for Air-Conditioning – Application of Air Conditioning – Principles of Air Conditioning
Unit-2: Air-Conditioning Systems
Introduction to Air-conditioning system – Classification of Air-conditioning system – Types of Coolers – Major system components – Major system controls
Block-2: Working of AC and Copper Tubing
Unit -3: Working of AC and Energy Efficiency
Types of Air-Conditioning unit – Energy Efficiency – Energy Labelling Standard for Air- Conditioner – Working of Window Air Conditioner (WAC) – Working of Split Air Conditioner (SAC)
Unit -4: Tubes, Equipments and Copper Tubing Operations
Hand Tools – Equipments and Devices – Copper Tubing – Copper Tubing Operations
Block-3: Installations and Ducting
Unit -5: Installation of Window and Split Air-Conditioner
General Safety for Installation – Installation of Window AC – Installation of Split AC – Post Installation Check-up
Unit -6: Duct Work
Types of Duct Work – Components of Duct Work – Balancing the System – Duct Liner – Duct Cleaning
Block-4: Servicing and Maintenance of Air-Conditioner
Unit -7: Servicing of Air-Conditioner
Basic servicing operations of Air-conditioner – Avoiding Contaminants – Good service Practices – General Guidelines for Good Service Practices – Recovery, Recycling and Reclamation of Refrigerants – Cleaning of Water cooled Condensers
Unit -8: Safety and Maintenance of Air-Conditioner
Safety and its Importance – Safety while working on Air-conditioners – First Aid for injuries to Technicians – Quality Maintenance of Tools and Equipments – Preventive Maintenance of Room Air-conditioners – Maintenance of Cooling Coil
Special Cooling Systems
Course Objectives
While studying Special Cooling Systems, the student shall be able to:
- Enumerate the types of special cooling system and the refrigerant used
- Describe about deep freezers, bottle coolers and display cabinets
- Explain about various refrigerated vehicles and cold storages used for food storage
- Theorize about ice cream freezers, fish freezers and white ice plant
Course Outcomes
After completion of the Course Special Cooling Systems, the student will be able to:
- List the various special cooling systems
- Demonstrate the maintenance of deep freezers
- Explain the working of white ice plant
- Detail the application of cold storage and its maintenance
Block-1: Types Of Special Cooling System and Deep Freezers
Unit-1 – Cooling Systems
Introduction – Special Cooling Systems – Refrigerant
Unit-2: Deep Freezers
History of Freezing – Types of Freezers – Basic Feerzerology – Application of Deep Freezer – Maintenance of Freezers
Block-2: Beverage Coolers and Display Cabinets
Unit -3: Bottle Coolers and Chillers
Bottle Coolers and its Types – Components of a Bottle Cooler – Rapid Chillers – Using Rapid Drink Chillers – Blast Chillers – Benefits and Disadvantages of Blast Chillers
Unit -4: Refrigerated Display Cabinets
Display Counters – Multi-deck Refrigerators – Chiller Doors – Care and Maintenance of a Refrigerated Cabinet
Block-3: Cold Storage and Refrigerated Vehicles
Unit -5: Cold Room and Cold Storage
Cold room and its types – Cold storage plant – Working of Cold Storage Plant – Applications of Cold Storage
Unit -6: Transport Refrigeration
Transport Refrigeration Systems – Types of Refrigerated Transport – Refrigerated Containers/ Reefer – Bus Air-Conditioning
Block-4: Consumable Products Freezer
Unit -7: Ice Cream and Fisheries Freezer
Types of Ice Cream Freezers – Freezing Ice Cream – Batch Freezers – Continuous Ice Cream Freezers – Operating the Continuous Freezers – Fisheries Freezers
Unit -8: White Ice Plant
White Ice and its Types – Requirements of Ice Plant – Working Principle – Applications of White Ice