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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

43834
3
43833
4

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

CO2
Freon-22
Freon-11
Ammonia

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

None of these
Increases
Decreases
Remains constant

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Relative humidity
Dry bulb temperature
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

Takes place at constant entropy
Involves no change in volume
Takes place at constant temperature
Takes place at constant pressure

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

More
Less
More for small capacity and less for high capacity
Same

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