Practice Benefits (4.3) - Vapour Compression & Refrigeration Systems

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does COP stand for in refrigeration?
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It's a measure of efficiency.
Question 2.
What is subcooled refrigerant?
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Think of it as the liquid state before expansion.
3Question 3.
What effect does subcooling have on COP?
- Increases
- Decreases
- No effect
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Think about how cooling impacts efficiency.
4Question 4.
Is superheating a process that can lead to reduced compressor damage?
- True
- False
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Consider its role before the compression stage.
Question 5.
Design a basic multi-stage VCR system scheme outlining potential refrigerant choices for various stages and explain why they are suitable.
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Think about specific refrigerants and where they perform best.
Question 6.
Evaluate the environmental impact of using HCFC refrigerants versus HFC refrigerants in cascade systems.
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Compare their global warming potential and impact on ozone layer.

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