Patent ID: 7660116

Claim:
A rack assembly for cooling a computer system, comprising: a rack providing support for one-or-more columns of heat-generating electronic devices, a further column supporting heat-generating electronic devices that generate less heat than the heat-generating electronic devices supported in the one or more columns, and device fans for moving air from an air inlet side of the rack through the heat-generating electronic devices and through an air outlet side of the rack; a unitary door having a support frame spanning the air outlet side of the rack and hingedly coupling the door to a rear vertical edge of the rack, wherein the unitary door includes an air-to-liquid heat exchanger panel spanning an air outlet passage inside the support frame so that substantially all of the air passing through the air outlet side of the rack must pass through the heat exchanger panel, and wherein the air outlet passage has a cross-sectional area that is substantially equal to or greater than the cross-sectional area of the one-or-more columns of heat-generating electronic devices, the air-to-liquid heat exchanger panel further having a coolant liquid inlet manifold and a coolant liquid outlet manifold extending along a vertical side of the support frame opposite the hinged coupling, wherein the coolant liquid inlet manifold and coolant liquid outlet manifold are substantially aligned with the further column.