Patent ID: 7486512

Claim:
An apparatus comprising: an electronics rack, the electronics rack comprising: an air inlet side and an air outlet side, the air inlet and air outlet sides respectively enabling ingress and egress of air; at least one electronics compartment; at least one air moving device, the at least one air moving device being capable of causing external air to flow from the air inlet side of the electronics rack, across the at least one electronics compartment to the air outlet side of the electronics rack; an outlet door mounted to and at least partially covering the air outlet side of the electronics rack, the outlet door comprising a first section and a second section; and wherein the first section of the outlet door is configured to re-direct only a portion of horizontally exiting inlet-to-outlet air flow of the electronics rack, and wherein the second section is configured to exhaust the re-directed air flow from the outlet door at a location and in a direction intersecting re-circulating, horizontally exhausted inlet-to-outlet air flow to facilitate mixing thereof with the re-circulating, horizontally exhausted inlet-to-outlet air flow from the air outlet side of the electronics rack to the air inlet side thereof, wherein mixing of the re-directed air flow and the re-circulating air flow facilitates lowering air inlet temperature at a portion of the air inlet side of the electronics rack, thereby enhancing cooling of the electronics rack.