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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

0.376
0.4
0.6
0.67

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

Sulphur sticks
Soap and water
All of these
Halide torch

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Refrigeration and Air Conditioning
During sensible cooling,

Wet bulb temperature increases
Partial pressure of vapour remains constant
Specific humidity increases
Relative humidity remains constant

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 - (1/C.O.P)
1 + C.O.P
1 + (1/C.O.P)
1 - C.O.P.

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Joule cycle
Reversed Otto cycle
Reversed Carnot cycle
Reversed Rankine cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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