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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Most of the domestic refrigerators work on the following refrigeration system

Vapour compression
Vapour absorption
Electrolux refrigerator
Carnot cycle

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Reversed Rankine
Rankine
Reversed Carnot
Carnot

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

One cooling turbine and two heat exchangers
Two cooling turbines and one heat exchanger
One cooling turbine and one heat exchanger
Two cooling turbines and two heat exchangers

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Refrigeration and Air Conditioning
Air refrigeration operates on

Carnot cycle
Rankine’s cycle
Brayton cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

50 kcal/ min
80 kcal/ hr
80 kcal/ min
50 kcal/ hr

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Refrigeration and Air Conditioning
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)

25 kJ/kg
100 kJ/kg
50 kJ/kg
125 kJ/kg

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MORE MCQ ON Refrigeration and Air Conditioning

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