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WATER MAKE-UP REQUIREMENTS OF COOLING TOWERS

Advantage Power Tower
Model shown: TC-135F

Evaporative cooling towers, like the ADVANTAGE Power Tower® Series, provide cooling by evaporating a small amount of the recirculated process water flow. Approximately 1,000 BTU’s are required to evaporate .12 gallons of water. Therefore, every tower ton (15,000 BTU/hr) requires approximately 1.8 gallons of water evaporation, or .03 gpm/ton.

As water evaporates in a cooling tower system, the water vapor enters the atmosphere while any dissolved solids remain behind, building concentration in the remaining water.

Most water treatment systems control this concentration by bleeding off the high concentration water, which is made up by fresh city water with a lower solid concentration. The amount of water that is bled off by the water treatment system is usually less than or equal to the amount of water that evaporates.

Therefore, the maximum normal water makeup for a cooling tower system
is .06 gpm / ton, or about 2% of the nominal tower flow rate.

The following chart specifies the Maximun Water Make Up requirement per model.

ADVANTAGE
MODEL #

Power Tower Series


TC-45F
TC-85F
TC-105F
TC-135F
TC-170F
TC-210F
TC-270F
TC-405F
TC-540F
TOWER
CAPACITY

Expressed in Tons


45
85
105
135
170
210
270
405
540
MAXIMUM EVAPORATION
At Designed Capacity
Shown in GPM


1.35
2.55
3.15
4.05
5.10
6.30
8.10
12.15
16.20
NOMINAL TOWER
FLOW RATE

Shown in GPM


135
255
315
405
510
630
810
1215
1620
MAXIMUM WATER MAKE-UP
At Designed Capacity
Shown in GPM


2.7
5.1
6.3
8.1
10.2
12.6
16.2
24.5
32.4

For more information about water make-up requirements and cooling tower systems
call the Advantage Sales Department at 317-887-0729.

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