Operation and maintenance of evaporative coolers

Evaporative cooling (air conditioning) was used long before the advent of m echanical refrigeration and its application to comfort cooling. Equipment a nd systems are available for residential, commercial, agricultural, and ind ustrial markets. Within each market, a wide range of configurations and app lications are available. Direct evaporative cooling most often is thought o f and used to provide temperature reduction. However, it is also a humidifi er. Consequently, it is applied to provide year-round cooling and/or humidi fication.