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A method of cooling electronic equipment mounted in an enclosure includes routing air from beneath the enclosure to an upper portion of the enclosure, selectively routing air to electronic equipment mounted in the upper portion of the enclosure, and exhausting heated air from the electronic equipmen

A method of cooling electronic equipment mounted in an enclosure includes routing air from beneath the enclosure to an upper portion of the enclosure, selectively routing air to electronic equipment mounted in the upper portion of the enclosure, and exhausting heated air from the electronic equipment to an enclosure outlet. In addition, preventing recirculation includes installing and arranging an internal air duct within an enclosure in such a manner that recirculation is prevented, and balancing air temperature around an enclosure includes using an internal air duct.

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1. A method of cooling electronic equipment mounted in an enclosure, the enclosure defining a front, two sides, and a rear, the method comprising: routing air from directly beneath the enclosure to an upper portion of the enclosure via a riser, the riser having a front facing toward the front of the

1. A method of cooling electronic equipment mounted in an enclosure, the enclosure defining a front, two sides, and a rear, the method comprising: routing air from directly beneath the enclosure to an upper portion of the enclosure via a riser, the riser having a front facing toward the front of the enclosure but spaced apart therefrom, wherein routing air from beneath the enclosure to an upper portion of the enclosure includes routing air from beneath the enclosure through a collector and into the riser and further routing air through the riser to a plurality of ports;selectively routing air to electronic equipment mounted in the upper portion of the enclosure by opening or closing one or more of the plurality of ports disposed at the front of the riser and facing toward the front of the enclosure such that the air flows through the open ports toward the front of the enclosure, wherein routing air to the electronic equipment includes redirecting air flowing from the one or more ports, after it leaves such port, from a first direction of flow to a second direction of flow, the first direction of flow being substantially toward the front of the enclosure and the second direction of flow being generally toward a side of the enclosure and across a front of the electronic equipment, and wherein the plurality of ports are arranged in the upper portion of the enclosure; andexhausting heated air from the electronic equipment to an enclosure outlet. 2. The method of claim 1, further comprising configuring the collector such that an interior thereof is in fluid communication with an interior of the riser, such that air may flow freely from the beneath the enclosure through the collector to the riser. 3. The method of claim 1, wherein the step of redirecting the air flowing from the one or more ports is carried out by a hinged door. 4. The method of claim 3, wherein the step of opening or closing the one or more ports is also carried out by the hinged door. 5. The method of claim 1, wherein the step of redirecting the air flowing from the one or more ports is carried out by an air dam disposed adjacent a front corner of the enclosure. 6. The method of claim 1, wherein the front of the riser is generally co-planar with a front of the electronic equipment.