Patent ID: 8208258
Filing Date: 2012-06-26
Classification: H05K

Abstract:
1. A cooling system comprising: a system coolant supply manifold, the system coolant supply manifold comprising a main system coolant supply loop and at least one system coolant supply branch line coupled to and in fluid communication with a first portion of the main system coolant supply loop at a first end of the at least one system coolant supply branch line and a second portion of the main system coolant supply loop at a second end of the at least one system coolant supply branch line for facilitating supply of cooled system coolant to a plurality of liquid-cooled electronics racks, wherein cooled system coolant circulates through the main system coolant supply loop; a system coolant return manifold, the system coolant return manifold comprising a main system coolant return loop and at least one system coolant return branch line coupled to and in fluid communication with a first portion of the main system coolant return loop at a first end of the at least one system coolant return branch line and with a second portion of the main system coolant return loop at a second end of the at least one system coolant return branch line for facilitating return of exhausted system coolant from the plurality of liquid-cooled electronics racks, wherein exhausted system coolant circulates through the main system coolant return loop; and a plurality of modular cooling units each coupled in fluid communication with the main system coolant supply loop and the main system coolant return loop, and each modular cooling unit comprising a liquid-to-liquid heat exchanger comprising a first coolant path and a second coolant path, wherein the first coolant path is in fluid communication with the main system coolant return loop and the main system coolant supply loop to facilitate passing a portion of exhausted system coolant from the main system coolant return loop through the liquid-to-liquid heat exchanger, and the second coolant path is coupled in fluid communication with a facility coolant supply line and a facility coolant return line to facilitate passing chilled facility coolant through the liquid-to-liquid heat exchanger for cooling exhausted system coolant passing through the first coolant path of the liquid-to-liquid heat exchanger for recirculation thereof to the plurality of liquid-cooled electronics racks as cooled system coolant via the main system coolant supply loop.