Question:-
For cooling and dehumidifying of unsaturated moist air it must be passed over a coil at a temperature
Option (A)
Of adiabatic saturation of incoming stream
Option (B)
Which is lower than the dew point of incoming stream
Option(C)
Which lies between dry bulb and wet bulb temperature
Option(D)
Which lies between wet bulb and dew point temperature of incoming stream
Correct Option:
(B)
Question Solution:
Cooling with adiabatic humidification:
When the air is passed through an insulated chamber having sprays of water maintain at a temperature higher than dew point temperature of entering but lower than its dry bulb temperature of entering air, or equal to the wet bulb temperature of the entering air.
Cooling and dehumidification:
The dehumidification of air is only possible when the effective surface temperature of the cooling coil is less then the dew point temperature of the air entering the coil.
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