Evaporative cooling is a natural phenomenon which occurs naturally whenever water comes into contact with warm air.
Evaporative cooling is the process of cooling the object by the act of water evaporation. The hot water will be evaporated from the container by the help of the dry air and the fan, then cooled water will stay in the container and will be used to cool the air that passes the cool water in indirect contact (through the coils) and direct contact (through the Pad).
This principle is illustrated by the chilling effect you feel when you come out of a swimming pool and a breeze blows across your body. The chill you feel is caused by the evaporation process of the water drying quickly from your body.
INDIRECT EVAPORATIVE COOLING (IEC):
When the air stream passes the water coils, then it will be indirectly cooled by the cooled water inside these coils (heat exchanger). This process is cooled indirect cooling because the air is in indirect contact with the water. This process is considered the 1st stage of the evaporative cooling system and it causes decrease in the temperature of the passes air with little bit rising in humidity.
DIRECT EVAPORATIVE COOLING (DEC):
When the air stream passes out of the water coils (1st stage cooling), then, it will pass through a cooling pad (media) which causes the temperature to goes down dramatically with adding considerable amount of moisture. This process is considered the 2nd stage of the evaporative cooling system.
INDIRECT/DIRECT EVAPORATIVE COOLING (IDEC):
The combination of these two stages delivers the highest performing evaporative cooling systemavailable in the worldtoday. Making it possible to replace compressor-based DX systems with Indirect/Direct (IDEC) systems with a fraction ofthe power consumption.