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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

6
1.2
5
0.2

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

R-12
Sulphur dioxide
Lithium bromide
Carbon dioxide

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Refrigeration and Air Conditioning
During humidification process, __________ increases.

Relative humidity
Dry bulb temperature
Specific humidity
Wet bulb temperature

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Dry bulb temperature
Specific humidity
Dew point temperature

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Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Receiver
Evaporator
Expansion valve
Compressor discharge

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Refrigeration and Air Conditioning
In case of sensible cooling of air, the coil efficiency is given by

1 - B.P.F.
1/ B.P.F.
1 + B.P.F.
P.F. - 1

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