US 10,219,415 B2
Server facility cooling system
Scott C. Wiley, Los Altos, CA (US)
Assigned to Facebook, Inc., Menlo Park, CA (US)
Filed by Facebook, Inc., Menlo Park, CA (US)
Filed on Feb. 13, 2017, as Appl. No. 15/431,748.
Prior Publication US 2018/0235107 A1, Aug. 16, 2018
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/20781 (2013.01) [H05K 7/2079 (2013.01); H05K 7/20236 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A server cooling system, comprising:
a tank containing an electrically insulating liquid;
one or more servers submerged in the liquid, wherein at least a portion of the heat generated by the one or more servers is transferred to the liquid;
an elongated cooling loop extending vertically between a first end portion and a second end portion, wherein the first end portion is located in the surrounding air and the second end portion is located beneath the surface of the earth; and
a heat exchanger positioned between the tank and the cooling loop configured to transfer heat from the liquid to the cooling loop,
wherein the heat exchanger comprises a thermally conductive wall in contact with the liquid on one side and in contact with the cooling loop on an opposite side.