COOLING TOWER CALCULATIONS

The method by which heat is removed from an open recirculating cooling water system is evaporation Eof some of the water over a towerThe amount of temperature reduction that can be accomplished by evaporation at any time is limited to the wetbulb temperature or simplythe relative humidityA high relative humidity lowers the evaporation rate; dry conditions encourage a higher evaporation rate Seasonal humidity conditions are an important consideration in tower sizing design and placement The recirculation rate and the temperature drop across the cooling tower are the two pieces of data needed to calculate the amount of water lost from the open recirculating cooling system ( due to evaporation) -Evaporation-Temperature Drop-Recirculation Rate-Concentration Ratio or Cycles of Concentration-Make Up Water-Holding Capacity or System Volume-Blowdown Rate