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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during humidification process

Increases
Remains constant
None of these
Decreases

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

210 kJ/min
620 kJ/min
21 kJ/min
420 kJ/min

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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)

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

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

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

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Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

Three fluids
None of the listed here
Two fluids
Single fluid

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

Frosting evaporator
None of these
Defrosting evaporator
Non-frosting evaporator

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