Effects of humidity on Cooling Towers

[WheyProtein]

If the inlet air of a CT has a very low humidity (30%) compared to a day with high humidity (70%), would I be correct to say that there will be an increase in water consumption? I believe that when the relative humidity is high, not much evaporation will take place and vice versa.

 

[quark]

Not if you control the fan based on basin temperature. If you let the water cool to the lowest temperature possible (usually WB +3C), then your belief is correct.