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Calculation of Cooling tower Make-up water requirement per day

Calculation of Cooling tower Make-up water requirement per day
Cooling water temperature: 1260 m3/h
Outlet water temperature: 32 °C
Drift losses: 0.1 %
No. of concentrating cycles: 3
Estimation of cooling tower losses:
a) Drift loss: 0.1%
b) Evaporation loss: Range (temp. difference, °C) x 100/675
:(37-32)/675 ) x 100 = 0.74%
c) Blow down loss: Evaporation loss/(No. of concentrating cycle-1)
: (0.74/(3-1) =0.37%.
Total make up water requirement: 0.1 + 0.74 + 0.37 = 1.21%
Cooling water circulation rate: 1260 m3/h
Make up water requirement: 1260 x 0.0121 = 15.2 m3/h
:364.8m3/day

Disclaimer: As obtained from the Internet