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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Evaporator
Compressor
Condenser
Expansion valve

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

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

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

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

0.2
1.2
5
6

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Superheated vapour
Wet vapour
Saturated liquid
Dry saturated vapour

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Aqua-ammonia
Ammonia
Water
Freon

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MORE MCQ ON Refrigeration and Air Conditioning

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