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Computer Room Air Conditioning (CRAC)

Definition - What does Computer Room Air Conditioning (CRAC) mean?

Computer room air conditioning (CRAC) is a unit that is used to monitor and maintain the temperature of room in which the computing equipment operates. They maintain the proper air distribution and humidity of the network room.

CRACs are most commonly used in data centers.

Techopedia explains Computer Room Air Conditioning (CRAC)

Until recently, standard air conditioners were normally used for maintaining temperatures in rooms in which computing equipment operates. These are now widely being replaced with CRACs. These have a lot in common with residential air conditioners commonly used in homes. They consist of a direct expansion refrigeration cycle, and air is blown over a cold coil in order to achieve cooling. The temperature of the coil is maintained with the help of a refrigerant.

However, unlike residential air conditioners, these units generally have on and off controls only. Additionally, some CRAC units can help in managing the airflow within the data center.

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