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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Condenser
Condenser, absorber and separator (rectifier)
Evaporator
Absorber

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Refrigeration and Air Conditioning
The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

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

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Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

43833
4
3
43834

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Dry bulb temperature
Specific humidity
Relative humidity
Wet bulb temperature

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Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.1
0.75
0.5
0.25

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Refrigeration and Air Conditioning
The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

(h2 - hA)/ (h1 - h2)
(h1 - h2)/ (hA - h2)
(hA - h1)/ (h2 - h1)
(hA - h2)/ (h1 - h2)

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MORE MCQ ON Refrigeration and Air Conditioning

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