Patent ID: 8154870

Claim:
A computing system, comprising: a rack system comprising one or more computer systems, the rack system configured to allow air to flow into the rack system on a first side of the rack system and to allow air to discharge from the rack system on a second side of the rack system; and one or more air directing devices coupled to the rack system on at least one of the first side of the rack system or the second side of the rack system, at least one of the air directing devices comprising: a duct comprising one or more walls defining a duct passage, wherein the duct passage comprises an upwardly increasing interior cross section over at least a portion of the height of the duct, wherein the duct is configured to segregate air passing through the duct from air outside the duct; and a louver configured to couple to the rack system such that the louver is between air in the rack system and air in the duct passage, the louver comprising one or more airflow control members configurable to allow air to pass from the rack system into the duct passage by way of openings in the louver.