Google Inc.

Ron Drew

Pascal C Kam

Thomas R Kowalski

Eehern J Wong

A data center cooling system includes a plurality of server racks aligned within a row in a human-occupiable workspace of a data center, the server racks supporting a plurality of heat-generating computing devices; a warm air aisle positioned adjacent the server racks opposite the human-occupiable workspace and including a warm air inlet adjacent to a back side of the row of server racks and a warm air outlet in fluid communication with a warm air plenum; a plurality of cooling modules each including at least one fan and a cooling coil; and a controller to perform operations including controlling the plurality of fans in the plurality of cooling modules to operate at a specified fan speed, and controlling a plurality of valves fluidly coupled to the plurality of cooling coils in the plurality of cooling modules to modulate to a specified valve position.

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Cumming, GA, United States of America

Ron Drew