Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

The specific humidity during heating and humidification process.
A:
remains constant
B:
increases
C:
decreases
D:
Answer: B
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The operating pressure for refrigerating units using R-12 as a refrigerant is
A:
2 bar
B:
8 bar
C:
15 bar
D:
30 bar
Answer: B
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One tonne of refrigeration (1TR) means that the heat removing capacity is
A:
21 kJ/min
B:
210 kJ/min
C:
420 kJ/min
D:
620 kJ/min
Answer: B
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The boiling point of __________ is -10.5°C.
A:
ammonia
B:
R-12
C:
sulphur dioxide
D:
carbon dioxide
Answer: C
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A boot-strap air cooling system has
A:
one heat exchanger
B:
two heat exchangers
C:
three heat exchangers
D:
four heat exchangers
Answer: B
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