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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In larger industrial and commercial reciprocating compression systems, refrigerant widely used is

Sulphur dioxide
Ammonia
Carbon dioxide
R-12

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

Sulphur dioxide
R-12
Lithium bromide
Carbon dioxide

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Refrigeration and Air Conditioning
The condition of refrigerant as it leaves the compressor in a vapour compression system is

Saturated liquid
Dry saturated vapour
Superheated vapour
Wet vapour

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Decreases C.O.P
O.P remains unaltered
Increases C.O.P
Other factors decide C.O.P

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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
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Dry saturated vapour
Saturated liquid
Superheated vapour
Wet vapour

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MORE MCQ ON Refrigeration and Air Conditioning

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