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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m²/hK
m/hK
m/h
m²/h

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

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

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Refrigeration and Air Conditioning
During humidification process, __________ increases.

Wet bulb temperature
Dry bulb temperature
Relative humidity
Specific humidity

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Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Evaporator
Expansion valve
Compressor
Condenser

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Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Horizontal line
Inclined line
Vertical line
Curved line

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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

18.6 kW
1.86 kW
3.72 kW
7.44 kW

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