Changes in air properties during evaporative cooling as shown on a psychrometric chart.
Summer heat can cause indoor conditions to become much hotter than desired.
Evaporative cooling is one way to reduce temperatures inside buildings. As water evaporates, it absorbs energy from the surrounding environment. Cooler indoor temperatures can improve the environment for plants and animals, plus significantly improve working conditions for employees. Evaporative cooling systems lower air temperature using mists, sprays, or wetted pads. As air flows past the moist pad surfaces, some of the moisture evaporates into the air stream.