How is the refrigerating effect measured, and what is the unit of refrigeration?
Define the coefficient of performance in refrigeration systems.
Name different types of refrigeration methods, such as ice, dry ice, steam jet, throttling, and liquid nitrogen refrigeration.
Explain the Carnot refrigeration cycle (introduction only).
Discuss the Bell-Coleman cycle and its advantages and disadvantages in air refrigeration.
Solve simple problems related to air refrigeration.
Describe the working of a vapor compression refrigeration cycle and represent it on P-H, T-S, and P-V diagrams.
Identify and explain different types of vapor compression cycles, along with their advantages and disadvantages.
Provide a basic introduction to vapor absorption cycles.
Discuss the Electrolux system used in domestic units.
Compare vapor absorption and vapor compression systems.
Solve simple problems related to vapor compression cycles.
Name different types of compressors used in refrigeration systems.
Identify types of condensers used in refrigeration and explain their advantages and disadvantages.
Provide a basic introduction to natural and forced draught cooling systems.
Compare air-cooled and water-cooled condensers.
Name different types of evaporators used in refrigeration systems.
Introduce refrigerants and lubricants, and discuss the properties of good refrigerants.
Classify refrigerants and explain methods for detecting refrigerant leakage.
Describe the process of charging a refrigeration system with refrigerant.
Discuss the types of expansion devices used in refrigeration systems.
Explain the operation of a high-side and low-side float valve.
Discuss the use of a solenoid valve in refrigeration systems.
Describe the function of an evaporator pressure regulator.
Provide examples of applications of refrigeration, such as slow and quick freezing, cold storage, frozen storage, dairy refrigeration, and ice making industry.
Introduce the concept of air conditioning.
Explain the use of a psychometric chart for various air conditioning processes.
Identify and describe the equipment used in air conditioning units and plants.
Discuss the tools used in refrigeration and air conditioning installation, along with the installation procedure, common faults, and servicing procedures.
