Cooling Tower Calculator

Calculate cooling tower range, approach, effectiveness, and makeup water requirement for HVAC and industrial cooling.

Water temperature entering the cooling tower.
°C
Water temperature leaving the tower.
°C
Ambient wet-bulb temperature.
°C
Circulating water flow rate.
m³/h
Ratio of dissolved solids. Typical: 3-7.

Results

Cooling Range-°C
Approach-°C
Tower Effectiveness-%
Evaporation Rate-m³/h
Makeup Water-m³/h
Blowdown Rate-m³/h
References: CTI — Cooling Technology Institute; ASHRAE Fundamentals