How to calculate the amount of circulating cooling water for central air conditioning?

The replenishing amount of circulating cooling water = evaporation amount + splash amount + sewage amount

Among them, evaporation amount = circulating water amount * cooling tower inlet and outlet temperature difference/582

The splash volume is equal to 0.1%-0.05% of the circulating water volume

There is another formula for sewage discharge volume that I forgot.

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