Practice Demerits (5.2) - Air Refrigeration - Refrigeration and Air Conditioning

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10 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does COP stand for?
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Think about performance measurement in cycles.
Question 2.
Name one advantage of using air as a refrigerant.
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It's commonly available and poses no hazard.
3Question 3.
Which factor primarily affects the efficiency of air refrigeration systems?
- COP
- Ambient Temperature
- Air Pressure
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Recall what COP measures.
4Question 4.
Air refrigeration systems can achieve very low temperatures compared to vapor-compression systems?
- True
- False
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Think of temperature ranges suitable for refrigeration.
Question 5.
Given that a certain air refrigeration cycle operates with a COP of 2.5, how much energy will it consume to provide a cooling effect of 10,000 kJ?
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Use the formula for COP to find energy consumption.
Question 6.
Consider an aircraft using a Bell-Coleman cycle needing to operate efficiently in a mostly quiet environment. Discuss the implications of noise generated by the system.
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Think about passenger experience in enclosed spaces.

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