Abstract: According to one embodiment of the present invention, there is provided an apparatus for cooling a data center. The apparatus comprises an air conditioning unit for supplying cooled air to a cold portion of a data center, an airflow measurement device for measuring a rate of bypass airflow through a segregation between the cold portion and hot portion of the data center, and outputting a bypass airflow signal indicative of the rate of bypass airflow between the cold portion and the hot portion, and a control unit arranged to receive the bypass airflow signal from the airflow measurement device and to output a control signal to a means for controlling a rate of the bypass airflow to maintain a predetermined rate of bypass airflow.

Abstract: According to one embodiment of the present invention, there is provided an apparatus for cooling a data centre. The apparatus comprises an air conditioning unit for supplying cooled air to a cold portion of a data centre, an airflow measurement device for measuring a rate of bypass airflow through a segregation between the cold portion and hot portion of the data centre, and outputting a bypass airflow signal indicative of the rate of bypass airflow between the cold portion and the hot portion, and a control unit arranged to receive the bypass airflow signal from the airflow measurement device and to output a control signal to a means for controlling a rate of the bypass airflow to maintain a predetermined rate of bypass airflow.

Abstract: Embodiments of the present invention provide a data centre, comprising data centre air directing means for directing data centre air from the data centre through a first side of one or more heat exchangers; external air directing means for directing external air from external to the data centre through a second side of the one or more heat exchangers; and adiabatic cooling means for adiabatically cooling the external air prior to entering the one or more heat exchangers, such that the external air flowing through the second side of the one or more heat exchangers indirectly cools the data centre air flowing through the first side of the one or more heat exchangers. Embodiments of the present invention may be realised in which the data centre is a moveable data centre.