Evaporative cooling uses a well know principle. Water to evaporate needs energy. When warm air passes above the sea the air gives its energy to the water. The water evaporates and the air becomes cooler. The is why the air is always cooler near water.
Evaporative coolers use this principle to keep the air cool. A water pump humidifies a cellulose based heat exchanger. A fan forces fresh air through a cellulose based heat exchanger that is kept humid by a water pump. The water that does not evaporate goes back into the tank to be recycled. A drain valve connected to a sophisticated control system ensures that the water is kept clean at all time and with a level of minerals kept to a minimum. A thermostat controls both the fan and the circulation pump to maintain the required temperature. A humidistat can be added to the system.
The fresh air is distributed to the area requiring cooling using rigid, flexible or textile ducts. Air diffusers are selected to match the building and rooms requirements.
Evaporative cooling can be used in many industrial (factories, warehouses, printing mills, mezzanines, etc.) and commercial applications (garden centers, show rooms, offices, sport centers, etc.). It is also used in mores specific applications like technical rooms or data center.
Evaporative cooling main advantages :
Lower investment and running costs
Comfort and air quality