Understanding Vapor Compression Refrigeration

What happens to the boiling point of water when the ambient pressure is decreased?

• It increases

• It decreases

• It fluctuates unpredictably

• It remains the same

Which refrigerant is known for being environmentally friendly but flammable?

• R22

• Freon

• Ammonia

• Propane

What is the primary function of a compressor in a refrigeration system?

• To filter the refrigerant

• To compress the refrigerant

• To expand the refrigerant

• To cool the refrigerant

What is the purpose of using a capillary tube in a refrigeration system?

• To increase pressure

• To add refrigerant

• To regulate flow and drop pressure

• To decrease temperature

Why is it important to remove air from the refrigeration system before charging it with refrigerant?

• To prevent oxidation

• To increase efficiency

• To avoid explosive mixtures

• All of the above

What is the effect of insufficient condenser cooling in a refrigeration system?

• No impact on system performance

• Increased energy consumption

• Decreased system pressure

• Overheating and reduced efficiency

What is the role of insulation in refrigeration systems?

• To increase pressure

• To reduce noise

• To enhance aesthetic appeal

• To prevent heat loss

What is the primary challenge when using a single capillary tube across different loads?

• It is not optimal for varying loads

• It can clog easily

• It cannot adjust to varying temperatures

• It does not change pressure effectively