In order to facilitate and increase the airflow from the front to the back, the fan doors are used in rear doors. In this way, in the data centers that collect hot air by flooded or locally ducted methods, the possibility of hot spots in the back of the racks is decreased, and with the use of the Fan Door, in addition to discharge of hot air from the rear door to the Hot Aisle, due to lower air pressure in the rear side, the performance of the fans in equipment also is improved, and while increasing the flow rate of cold air from the inside of the equipment, the efficiency of ventilation system will be significantly improved.
In data centers using Room-Oriented and Row-Oriented Air Conditioning systems and applying Fully Ducted Hot Air Collection, cooled air should be provided in front of racks. After passing through equipment, warmed air leaves back of racks. Therefore, in racks with high power consumption, in order to facilitate and increase direct air flow rate from front to end of racks, as well as to prevent the hot and cold air interference in the room, Exhausted Doors are used.
Using the Exhausted Door, the hot air generated at the rear of racks is quickly absorbed by fans embedded on, and after moving in hot air channel, exits from the upper part of the door. At this point, if the hot air channel installed above the Exhausted Door the hot air is collected by centralized system and direct back to the cooling system inlet.