Approach Temperature of Cooling Tower

Ben9108 · Jul 31, 2017

Approach Temperature is the temperature difference between the temperature of the cooling water leaving the cooling tower and the wet bulb temperature of the air entering the cooling tower

I would like to seek someone help whether high approach temperature can optimize the power consumption of variable speed cooling tower.

lukaiENG · Jul 31, 2017

You might save a little in terms of the cooling tower fan energy itself, but this will be more than offset by an increase in chiller energy consumption and a decrease in hours of economization per year.

I would go with a larger tower (with a lower approach) to get the best efficiency. I would typically design a tower with an approach of 3-5 degrees, depending on size restrictions.

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Approach Temperature of Cooling Tower

Ben9108

Civil/Environmental

lukaiENG

Mechanical

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