Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

The boiling point of R-12 is about - 30°C.
A:
True
B:
False
C:
D:
Answer: A
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The overall coefficient of heat transfer is used in problems of
A:
conduction
B:
convection
C:
radiation
D:
conduction and convection
Answer: D
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During sensible heating of air __________ decreases.
A:
wet bulb temperature
B:
relative humidity
C:
dry bulb temperature
D:
specific humidity
Answer: B
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In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
A:
wet vapour region
B:
superheated vapour region
C:
sub-cooled liquid region
D:
none of these
Answer: C
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The temperature of air recorded by a thermometer, when the moisture present in it begins to condense, is called wet bulb temperature.
A:
Yes
B:
No
C:
D:
Answer: B
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