Master BC 180-340 industrial bio coolers use a simple process of evaporation to decrease the temperature of the air. A pump takes water from a built-in tank to wet a large filter. A powerful fan pushes the warm incoming air through the wet filter. The energy used by the water as it evaporates, cools the air.
This is a low cost, environmentally friendly way of cooling large open areas. Evaporative coolers rely on fresh air flow to enable the process to work, so are best suited to open areas such as workshops (steel, glass, automotive), events (to provide “cool down” areas), agriculture (to avoid heat stress to animals in a barn) etc.