Patent ID: 8908368

Claim:
A cooling system comprising: a cooling unit spaced from a server rack unit, the cooling unit configured to receive warm air from the server rack unit; the server rack unit having a first surface and a second surface opposite the first surface and being configured to receive cool air from the cooling unit at a server rack front, a server rack back opposite the server rack front connected by a pair of server rack sides; an obstruction formed between the server rack front and server rack back forming a channel between the obstruction and the server rack back for receiving warm air from the server rack unit, the first surface defining a server rack opening below the channel; a back panel sealed to the server rack back and a side panel sealed to each of the server rack sides; a sub-floor on which the server rack unit is mounted, the sub-floor defining a floor opening for receiving the warm air from the channel through the server rack opening, the floor opening being aligned with the server rack opening, and the server rack unit being sealed to the sub-floor via a single seal between the server rack opening and the floor opening; and a duct extending from the server rack opening to the cooling unit to duct the warm air from the channel to the cooling unit; and a damper disposed at the first surface, wherein a pressure gradient of the warm air in the channel is greater at the second surface than at the first surface, the pressure gradient creating an air flow forcing the warm air in the channel in to the server rack opening, and wherein the damper is configured to regulate the air flow inside of the channel, and is automatically regulated based on a static differential pressure between a location exterior to the server rack unit and a location within the channel.