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Using percentages are normal practice but i need exact calculations.
sorry thes is not in my specialty
Actually according to my experience, every manufacturer provides the estimated evoparation loss according to his own selected model.
Very easy to calculate water evaporation loss, Here is an example.
Ex: If the water flow rate is30 GPM
Sol. W.E.L (m3/hr) =0.00085 x1.8 x water circulation rate (m3/hr) x Delta T (difference in temp)
(1 gpm =0.003785 m3/min )
(1 m3/hr =1000 lit/hr )
(water circulation rate (30 gpm) =30 x0.003785 x60 (m3/hr) =6.813 m3/hr)
Now, insert in above formula
=0.00085 x1.8 x6.813 m3/ hr x (35 c -31 c)
=0.047 m3/hr is the water evaporation loss
Hope this example will help you.
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