US Patent No. 10,342,163


Patent No. 10,342,163
Issue Date July 02, 2019
Title Cooling A Data Center
Inventorship Eehern J. Wong, Sunnyvale, CA (US)
Pascal Kam, Union City, CA (US)
Thomas R. Kowalski, Santa Cruz, CA (US)
Ron Drew, Cumming, GA (US)
Assignee Google LLC, Mountain View, CA (US)

Claim of US Patent No. 10,342,163

1. A data center cooling system, comprising: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 comprising 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 comprising at least one fan and at least one cooling coil mounted together in a housing, the cooling modules positioned to circulate a cooling airflow from the human-occupiable workspace, through the server racks, and to the warm air aisle; and
a single controller electrically and communicably coupled to each of the plurality of cooling modules in a serial arrangement and operable to perform operations comprising:
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,
wherein the serial arrangement of the single controller comprises the single controller being electrically coupled to each of the plurality of cooling modules by a direct current (DC) control power bus to receive power from a first cooling unit through the DC control power bus, independently of a loss of power to the remaining cooling units of the plurality of cooling units.