COOLING TOWER CALCULATIONS: STEP BY STEP GUIDE! INDUSTRIAL APPLICATION

COOLING TOWER CALCULATIONS: STEP BY STEP GUIDE!
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In order to lower the temperature of the water, air and water are brought into direct contact in a cooling tower, a specialized heat exchanger. A little amount of water evaporates during this process, bringing the temperature of the water flowing through the tower down.
Approach: is the difference between the air's wet-bulb temperature and the temperature of the cold water leaving the tower.
Wet Bulb temperature: The lowest temperature that water can supposedly attain through evaporation is wet bulbs.
Cooling range: The temperature differential between the hot water entering the tower and the cold water leaving the tower is known as the cooling range.
Blowdown: is the intentional discharge of water from the system to regulate salt or other impurity concentrations in the circulating water rate or l/min.
Cycles of concentration (COC): compare dissolved solids in makeup water with solids concentrated through evaporation in the circulating water.
Drift: The term "drift" refers to water that has been released into the airflow and released into the atmosphere. Water lost through evaporation is not considered a part of drift loss.
· Drift loss (D) = 0.3 to 1.0 percent of circulating water for a natural draft tower
· Drift loss (D) = 0.1 to 0.2 percent of circulating water for a typical induced draft tower
Makeup: is the volume of water necessary to make up for typical losses brought on by blow down drift, and evaporation.
To calculate cooling tower mass balance:
a. Get the wet bulb temperature.
b. Calculate the Cooling tower efficiency.
c. Calculate water lost through Evaporation.
d. Calculate Blown down
e. Calculate Water droplets or drift loss
f. Calculate: Make up water.
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