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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Equal to
More than
None of these
Less than

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Remains constant
Decreases
None of these
Increases

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

T₁/(T₂ - T₁)
T₂/(T₂ - T₁)
(T₂ - T₁)/T₁
(T₁ - T₂)/T₁

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

3.72 kW
7.44 kW
1.86 kW
18.6 kW

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Refrigeration and Air Conditioning
The wet bulb depression indicates _________ humidity of the air.

Specific
None of these
Absolute
Relative

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Refrigeration and Air Conditioning
In chemical dehumidification process,

Dew point temperature decreases
Dry bulb temperature increases
Wet bulb temperature decreases
All of these

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