Cooling towers
Cooling tower types and how to choose one.

What is a cooling tower? Types and where they are used
A cooling tower evaporates a small share of the water to cool the rest below the outdoor air temperature. Its parts, open and closed-circuit types, airflow layouts and how it differs from a chiller.

Cooling tower selection: heat load, approach and wet-bulb temperature
Tower selection starts with four values: heat load, flow rate, water temperatures and the site's wet-bulb temperature. A 500 kW example works out the flow, make-up water and blowdown.
