Patent ID: 7826216

Claim:
An information handling center, comprising: an information handling system (IHS) rack configured to receive a cooled fluid from a pressurized plenum, wherein the IHS rack includes at least one ventilator that is operable to cause the cooled fluid to be drawn from the pressurized plenum into the IHS rack, and wherein the IHS rack includes at least one ventilator that is operable to direct a heated fluid that has been heated through the IHS rack such that the heated fluid is combined with the cooled fluid into a mixed fluid and the mixed fluid is directed into at least one rack unit housed in the IHS rack; a cooling fluid supply unit coupled to the pressurized plenum and operable to cool a fluid passing through the cooling fluid supply unit and direct the cooled fluid into the pressurized plenum; a fluid flow control located in the cooling fluid supply unit and coupled to a pressure sensor that is operable to determine a pressure in the pressurized plenum, wherein the fluid flow control is operable to adjust the flow rate of the fluid passing through the cooling fluid supply unit based on the pressure determined by the pressure sensor; and wherein in response to the at least one ventilator directing the heated fluid such that the heated fluid combines with the cooled fluid into the mixed fluid, the pressure sensor detects a pressure increase in the pressurized plenum and the fluid flow control adjusts the flow rate of the fluid passing through the cooling fluid supply unit to reduce the pressure in the pressurized plenum.