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Refrigeration and Air Conditioning

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
The C.O.P. of a heat pump working on a reversed Carnot cycle is

(T₁ - T₂)/T₁
T₂/(T₂ - T₁)
(T₂ - T₁)/T₁
T₁/(T₂ - T₁)

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

22°C DBT and 60% RH
25°C DBT and 100% RH
25°C DBT and 40% RH
20°C DBT and 80% RH

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Zoetrope refrigerants
Inorganic refrigerants
Halocarbon refrigerants
Hydrocarbon refrigerants

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

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

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

noisy operation
very little power consumption
cooling below 0°C
quiet operation

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MORE MCQ ON Refrigeration and Air Conditioning

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