Mass Transfer
The cooling effect in a cooling tower can be speeded up by

Reducing the humidity of the air
Increasing the air velocity and area of exposed wet surface
Reducing the barometric pressure
All of the listed here

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Mass Transfer
For water-ethanol system, the minimum reflux ratio

Cannot be computed
Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
Is computed from the intercept of the operating line
Is the optimum reflux ratio

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