Practice Main Methods Employed (3.2) - Air Refrigeration - Refrigeration and Air Conditioning

Practice: Main Methods Employed

Lesson 3.2Air Refrigeration

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the Coefficient of Performance (COP) for the Reversed Carnot Cycle?
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Think about the ratio of temperatures.
Question 2.
Name one benefit of using air as a refrigerant in the Bell-Coleman cycle.
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Consider environmental impacts.
3Question 3.
What process is NOT part of the Reversed Carnot Cycle?
- Constant Pressure Heat Absorption
- Isothermal Heat Rejection
- Isentropic Expansion
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Review the distinct processes in each cycle.
4Question 4.
The efficiency of the Bell-Coleman cycle is higher than that of modern vapor-compression systems.
- True
- False
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Consider which system has lesser energy consumption.
Question 5.
A refrigeration plant utilizes a Bell-Coleman cycle at a temperature of 20°C for TL and 60°C for TH. Calculate the COP of the system.
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Remember to convert Celsius to Kelvin first.
Question 6.
Considering the limitations of the Bell-Coleman cycle, evaluate how advancements in materials and technology could potentially improve its COP.
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Think about how energy efficiency can be improved in technologies.

5 more questions in this section. Enroll free to practise them all.