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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is

More
Less
Same
More or less depending on ambient conditions

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Refrigeration and Air Conditioning
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

0.376
0.4
0.67
0.6

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

CO2
Ammonia
Freon-22
Freon-11

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Refrigeration and Air Conditioning
In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at

Delivery of compressor
Suction of compressor
Low pressure side near receiver
High pressure side close to receiver

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Requires little power consumption
Gives noisy operation
Gives quiet operation
Cools below 0°C

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-12
R-11
Ammonia
R-22

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MORE MCQ ON Refrigeration and Air Conditioning

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