Question:-
In a cooling tower the sum of range and approach is equal to twice the wet bulb depression. Then
Option (A)
Dry bulb temperature is mean of water inlet temperature and wet bulb temperature
Option (B)
Dry bulb temperature is mean of water outlet temperature and wet bulb temperature
Option(C)
Water inlet temperature is mean of dry bulb temperature and wet bulb temperature
Option(D)
Water inlet temperature is mean of water outlet temperature and wet bulb temperature
Correct Option:
(A)
Question Solution:
Range = ti - t0
Approach = t0 - twb
Wet bulb depression = tdb - twb
{ti = inlet temperature of water in cooling tower
t0 = outlet temperature of water in cooling tower}
Now
(ti - t0) + (t0-twb) = 2(tdb-twb)
tdb = {(ti+twb) / 2}
question-answer-faq-9453