misting

Misting refers to the controlled atomization of water into the air to create a cloud of fine droplets. The droplets are usually in the range of about 10 to 200 micrometers, and they evaporate rapidly, which cools the surrounding air through evaporative cooling. Misting systems can be designed for outdoor cooling, humidification, or moisture delivery in agricultural or industrial settings.

Most misting systems use a pump and a network of nozzles. High-pressure misting systems generate droplets by forcing water through tiny nozzles at pressures of hundreds to thousands of pounds per square inch, producing very fine mist. Low-pressure systems operate at tens to a few hundred psi. The choice of nozzle, pipe diameter, and length of runs affects droplet size and coverage.

Applications include outdoor patio cooling, greenhouse humidity management, livestock or poultry cooling, dust suppression in mining or construction, product finishing, and museum or archival humidification. Some systems are designed for low-energy cooling, while others emphasize agricultural irrigation or disinfection where appropriate and safety-compliant.

Water quality is important to avoid mineral deposits and clogged nozzles; using filtered or demineralized water helps. Regular maintenance and flushing prevent microbial growth. Humidity increases from mist can cause slippery surfaces and mold growth; operation in windy conditions reduces effectiveness.

Compared with direct cooling methods, misting uses relatively little energy but water use can be substantial; efficiency depends on ambient temperature, humidity, airflow, and droplet size. Misting is distinct from fogging in that misting generally aims to humidify or cool a space with visible mist, whereas fogging for sterilization or pest control uses much finer aerosols and different equipment.