Method and system for cooling electronics racks using pre-cooled air

A cooled electronics system comprising:

• a frame, said frame having an air inlet and an air outlet;
• a plurality of electronics drawers within said frame;
• a plurality of air moving devices within said frame, said air moving devices being capable of causing air to flow from said inlet, across said drawer, and to said outlet;
• and
• an inlet heat exchanger located at said air inlet, said inlet heat exchanger capable of cooling air entering said frame below ambient temperature, said inlet heat exchanger including a plurality of segments, wherein said segments are pivotally mounted on said frame, each segment capable of being pivoted independently of any others of said segments.

A cooled electronics system comprising:

• a frame, said frame having:
• an air inlet and an air outlet, said inlet and outlet respectively enabling ingress and egress of external air;
• a plurality of electronics drawers;
• a plurality of air moving devices, said air moving devices being capable of causing external air to flow from said inlet, across said drawers, and to said outlet;
• an inlet cover pivotally mounted to said frame at said air inlet, said inlet cover including an air-permeable portion, said inlet cover having louvers to direct incoming airflow;
• an inlet fluid-to-air heat exchanger integrated into said inlet cover, said inlet heat exchanger capable of cooling air entering said frame below ambient temperature when in a first position, said inlet heat exchanger further capable of pivoting as a single unit along with said inlet cover to a second position thereby providing access to said plurality of electronics drawers;
• wherein said inlet cover, said louvers, and said inlet heat exchanger provide acoustic insulation and electromagnetic shielding.